COOPER & CHYAN TECHNOLOGY, INC.
                                           
                           1995 DIRECTORS STOCK OPTION PLAN
                                           
                              As Adopted August 16, 1995
                                           

    1.   PURPOSE.  This 1995 Directors Stock Option Plan (this "PLAN") is
established to provide equity incentives for nonemployee members of the Board of
Directors of Cooper & Chyan Technology, Inc. (the "COMPANY"), who are described
in Section 6.1 below, by granting such persons options to purchase shares of
stock of the Company.

    2.   ADOPTION AND STOCKHOLDER APPROVAL.  After this Plan is adopted by the
Board of Directors of the Company (the "BOARD"), this Plan will become effective
on the time and date (the "EFFECTIVE DATE") on which the registration statement
filed by the Company with the Securities and Exchange Commission ("SEC") under
the Securities Act of 1933, as amended (the "SECURITIES ACT"), to register the
initial public offering of the Company's Common Stock is declared effective by
the SEC; PROVIDED, HOWEVER, that if the Effective Date does not occur on or
before December 31, 1995, this Plan and any Options granted hereunder will
terminate as of December 31, 1995 having never become effective.  This Plan
shall be approved by the stockholders of the Company, consistent with applicable
laws, within twelve (12) months after the date this Plan is adopted by the
Board.  Options ("OPTIONS") may be granted under this Plan after the Effective
Date provided that, in the event that stockholder approval is not obtained
within the time period provided herein, this Plan, and all Options granted
hereunder, shall terminate.  No Option that is issued as a result of any
increase in the number of shares authorized to be issued under this Plan shall
be exercised prior to the time such increase has been approved by the
stockholders of the Company and all such Options granted pursuant to such
increase shall similarly terminate if such stockholder approval is not obtained.
So long as the Company is subject to Section 16(b) of the Securities Exchange
Act of 1934, as amended, (the "EXCHANGE ACT") the Company will comply with the
requirements of Rule 16b-3 with respect to stockholder approval.

    3.   TYPES OF OPTIONS AND SHARES.  Options granted under this Plan shall be
nonqualified stock options ("NQSOS").  The shares of stock that may be purchased
upon exercise of Options granted under this Plan (the "SHARES") are shares of
the Common Stock of the Company.

    4.   NUMBER OF SHARES.  The maximum number of Shares that may be issued
pursuant to Options granted under this Plan (the "MAXIMUM NUMBER") is 150,000
Shares, subject to adjustment as provided in this Plan.  If any Option is
terminated for any reason without being exercised in whole or in part, the
Shares thereby released from such Option shall be available for purchase under
other Options subsequently granted under this Plan.  At all times during the
term of this Plan, the Company shall reserve and keep available such number of
Shares as shall be required to satisfy the requirements of outstanding Options
granted under this Plan; PROVIDED, HOWEVER that if the aggregate number of
Shares subject to outstanding Options granted under this Plan plus the aggregate
number of Shares previously issued by the Company pursuant to the exercise of
Options granted under this Plan equals or exceeds the Maximum Number of Shares,
then notwithstanding anything herein to the contrary, no further Options may be
granted under this Plan until the Maximum Number is increased or the aggregate
number of Shares subject to outstanding Options granted under this Plan plus the
aggregate number of Shares previously issued by the Company pursuant to the
exercise of Options granted under this Plan is less than the Maximum Number.

    5.   ADMINISTRATION.  This Plan shall be administered by the Board or by a
committee of not less than two members of the Board appointed to administer this
Plan (the "COMMITTEE").  As used in this Plan, references to the Committee shall
mean either such Committee or the Board if no Committee has been established. 
The interpretation by the Committee of any of the provisions of this Plan or any
Option granted under this Plan shall be final and binding upon the Company and
all persons having an interest in any Option or any Shares purchased pursuant to
an Option.



    6.   ELIGIBILITY AND AWARD FORMULA.

         6.1  ELIGIBILITY.  Options may be granted only to directors of the
Company who are not employees of the Company or any Parent, Subsidiary or
Affiliate of the Company, as those terms are defined in Section 17 below. 

         6.2  INITIAL GRANT.  Each Optionee who on or after the Effective Date
is or becomes a member of the Board will automatically be granted an Option for
20,000 Shares (the "INITIAL GRANT").  Initial Grants shall be made on the later
of the Effective Date or the date such Optionee first becomes a member of the
Board.

         6.3  SUCCEEDING GRANTS.  At each Annual Meeting of the Company, if the
Optionee is still a member of the Board and has served continuously as a member
of the Board since the date of the Optionee's Initial Grant, the Optionee will
automatically be granted an Option for 5,000 Shares (a "SUCCEEDING GRANT").

    7.   TERMS AND CONDITIONS OF OPTIONS.  Subject to the following and to
Section 6 above:

         7.1  FORM OF OPTION GRANT.  Each Option granted under this Plan shall
be evidenced by a written Stock Option Grant ("GRANT") in such form (which need
not be the same for each Optionee) as the Committee shall from time to time
approve, which Grant shall comply with and be subject to the terms and
conditions of this Plan.

         7.2  VESTING.  Options granted under this Plan shall be exercisable as
they vest.  The date an Optionee receives an Initial Grant or a Succeeding Grant
is referred to in this Plan as the "START DATE" for such Option.

              (a)  INITIAL GRANTS.  Each Option that is an Initial Grant will
vest as to twenty-five percent (25%) of the Shares upon each of the first four
(4) successive anniversaries of the Start Date for such Initial Grant, so long
as the Optionee continuously remains a director of the Company.

              (b)  SUCCEEDING GRANTS.  Each Succeeding Grant will vest as to
twenty-five percent (25%) of the Shares upon each of the first four (4)
successive anniversaries of the Start Date for such Succeeding Grant, so long as
the Optionee continuously remains a director of the Company.

         7.3  EXERCISE PRICE.  The exercise price of an Option shall be the
Fair Market Value (as defined in Section 17.4) of the Shares, at the time that
the Option is granted.

         7.4  TERMINATION OF OPTION.  Except as provided below in this Section,
each Option shall expire ten (10) years after its Start Date (the "EXPIRATION
DATE").  The Option shall cease to vest if the Optionee ceases to be a member of
the Board.  The date on which the Optionee ceases to be a member of the Board
shall be referred to as the "TERMINATION DATE".  An Option may be exercised
after the Termination Date only as set forth below:

              (a)  TERMINATION GENERALLY.  If the Optionee ceases to be a
member of the Board for any reason except death or disability, then each Option
then held by such Optionee, to the extent (and only to the extent) that it would
have been exercisable by the Optionee on the Termination Date, may be exercised
by the Optionee within seven (7) months after the Termination Date, but in no
event later than the Expiration Date.

              (b)  DEATH OR DISABILITY.  If the Optionee ceases to be a member
of the Board because of the death of the Optionee or the disability of the
Optionee within the meaning of Section 22(e)(3) of the Internal Revenue Code of
1986, as amended (the "CODE"), then each Option then held by such Optionee, to
the extent (and only to the extent) that it would have been exercisable by the
Optionee on the Termination Date, may be exercised by the Optionee (or the
Optionee's legal representative) within twelve (12) months after the Termination
Date, but in no event later than the Expiration Date.

                                         -2-




    8.   EXERCISE OF OPTIONS.

         8.1  NOTICE.  Options may be exercised only by delivery to the Company
of an exercise agreement in a form approved by the Committee stating the number
of Shares being purchased, the restrictions imposed on the Shares and such
representations and agreements regarding the Optionee's investment intent and
access to information as may be required by the Company to comply with
applicable securities laws, together with payment in full of the exercise price
for the number of Shares being purchased.

         8.2  PAYMENT.  Payment for the Shares purchased upon exercise of an
Option may be made (a) in cash or by check; (b) by surrender of shares of Common
Stock of the Company that have been owned by the Optionee for more than six (6)
months (and which have been paid for within the meaning of SEC Rule 144 and, if
such shares were purchased from the Company by use of a promissory note, such
note has been fully paid with respect to such shares) or were obtained by the
Optionee in the open public market, having a Fair Market Value equal to the
exercise price of the Option; (c) by waiver of compensation due or accrued to
the Optionee for services rendered; (d) provided that a public market for the
Company's stock exists, through a "same day sale" commitment from the Optionee
and a broker-dealer that is a member of the National Association of Securities
Dealers (an "NASD DEALER") whereby the Optionee irrevocably elects to exercise
the Option and to sell a portion of the Shares so purchased to pay for the
exercise price and whereby the NASD Dealer irrevocably commits upon receipt of
such Shares to forward the exercise price directly to the Company; (e) provided
that a public market for the Company's stock exists, through a "margin"
commitment from the Optionee and a NASD Dealer whereby the Optionee irrevocably
elects to exercise the Option and to pledge the Shares so purchased to the NASD
Dealer in a margin account as security for a loan from the NASD Dealer in the
amount of the exercise price, and whereby the NASD Dealer irrevocably commits
upon receipt of such Shares to forward the exercise price directly to the
Company; or (f) by any combination of the foregoing.

         8.3  WITHHOLDING TAXES.  Prior to issuance of the Shares upon exercise
of an Option, the Optionee shall pay or make adequate provision for any federal
or state withholding obligations of the Company, if applicable.

         8.4  LIMITATIONS ON EXERCISE.  Notwithstanding the exercise periods
set forth in the Grant, exercise of an Option shall always be subject to the
following limitations:

              (a)  An Option shall not be exercisable until such time as this
Plan (or, in the case of Options granted pursuant to an amendment increasing the
number of shares that may be issued pursuant to this Plan, such amendment) has
been approved by the stockholders of the Company in accordance with Section 15
hereof.

              (b)  An Option shall not be exercisable unless such exercise is
in compliance with the Securities Act and all applicable state securities laws,
as they are in effect on the date of exercise.

              (c)  The Committee may specify a reasonable minimum number of
Shares that may be purchased upon any exercise of an Option, provided that such
minimum number will not prevent the Optionee from exercising the full number of
Shares as to which the Option is then exercisable.

    9.   NONTRANSFERABILITY OF OPTIONS.  During the lifetime of the Optionee,
an Option shall be exercisable only by the Optionee or by the Optionee's
guardian or legal representative, unless otherwise permitted by the Committee. 
No Option may be sold, pledged, assigned, hypothecated, transferred or disposed
of in any manner other than by will or by the laws of descent and distribution.

    10.  PRIVILEGES OF STOCK OWNERSHIP.  No Optionee shall have any of the
rights of a stockholder with respect to any Shares subject to an Option until
the Option has been validly exercised.  No adjustment shall be made for
dividends or distributions or other rights for which the record date is prior to
the date of exercise, except as provided in this Plan.  The Company shall
provide to each Optionee a copy of the annual financial statements of the
Company, at such time after the close of each fiscal year of the Company as they
are released by the Company to its stockholders.

                                         -3-




    11.  ADJUSTMENT OF OPTION SHARES.  In the event that the number of
outstanding shares of Common Stock of the Company is changed by a stock
dividend, stock split, reverse stock split, combination, reclassification or
similar change in the capital structure of the Company without consideration,
the number of Shares available under this Plan and the number of Shares subject
to outstanding Options and the exercise price per share of such outstanding
Options shall be proportionately adjusted, subject to any required action by the
Board or stockholders of the Company and compliance with applicable securities
laws; PROVIDED, HOWEVER, that no fractional shares shall be issued upon exercise
of any Option and any resulting fractions of a Share shall be rounded up to the
nearest whole Share.

    12.  NO OBLIGATION TO CONTINUE AS DIRECTOR.  Nothing in this Plan or any
Option granted under this Plan shall confer on any Optionee any right to
continue as a director of the Company.

    13.  COMPLIANCE WITH LAWS.  The grant of Options and the issuance of Shares
upon exercise of any Options shall be subject to and conditioned upon compliance
with all applicable requirements of law, including without limitation compliance
with the Securities Act, compliance with all other applicable state securities
laws and compliance with the requirements of any stock exchange or national
market system on which the Shares may be listed.  The Company shall be under no
obligation to register the Shares with the SEC or to effect compliance with the
registration or qualification requirement of any state securities laws, stock
exchange or national market system.

    14.  ACCELERATION OF OPTIONS.  In the event of (a) a dissolution or
liquidation of the Company, (b) a merger or consolidation in which the Company
is not the surviving corporation (OTHER THAN a merger or consolidation with a
wholly-owned subsidiary, a reincorporation of the Company in a different
jurisdiction, or other transaction in which there is no substantial change in
the stockholders of the Company or their relative stock holdings and the Options
granted under this Plan are assumed or replaced by the successor corporation,
which assumption will be binding on all Optionees), (c) a merger in which the
Company is the surviving corporation but after which the stockholders of the
Company (other than any stockholder which merges (or which owns or controls
another corporation which merges) with the Company in such merger) cease to own
their shares or other equity interests in the Company, (d) the sale of
substantially all of the assets of the Company, or (e) any other transaction
which qualifies as a "corporate transaction" under Section 424 of the Code
wherein the stockholders of the Company give up all of their equity interests in
the Company (EXCEPT for the acquisition, sale or transfer of all or
substantially all of the outstanding shares of the Company from or by the
stockholders of the Company), the vesting of all options granted pursuant to
this Plan will accelerate and the options will become exercisable in full prior
to the consummation of such event at such times and on such conditions as the
Committee determines, and if such options are not exercised prior to the
consummation of the corporate transaction, they shall terminate in accordance
with the provisions of this Plan.

    15.  AMENDMENT OR TERMINATION OF PLAN.  The Committee may at any time
terminate or amend this Plan (but may not terminate or amend the terms of any
outstanding option without the consent of the Optionee); PROVIDED, HOWEVER, that
the Committee shall not, without the approval of the stockholders of the
Company, increase the total number of Shares available under this Plan (except
by operation of the provisions of Sections 4 and 11 above) or change the class
of persons eligible to receive Options.  Further, the provisions in Sections 6
and 7 of this Plan shall not be amended more than once every six (6) months,
other than to comport with changes in the Code, the Employee Retirement Income
Security Act or the rules thereunder.  In any case, no amendment of this Plan
may adversely affect any then outstanding Options or any unexercised portions
thereof without the written consent of the Optionee.

    16.  TERM OF PLAN.  Options may be granted pursuant to this Plan from time
to time within a period of ten (10) years from the date this Plan is adopted by
the Board. 

    17.  CERTAIN DEFINITIONS.  As used in this Plan, the following terms shall
have the following meanings:

                                         -4-




         17.1 "PARENT" means any corporation (other than the Company) in an
unbroken chain of corporations ending with the Company if, at the time of the
granting of the Option, each of such corporations other than the Company owns
stock possessing 50% or more of the total combined voting power of all classes
of stock in one of the other corporations in such chain.

         17.2 "SUBSIDIARY" means any corporation (other than the Company) in an
unbroken chain of corporations beginning with the Company if, at the time of
granting of the Option, each of the corporations other than the last corporation
in the unbroken chain owns stock possessing fifty percent (50%) or more of the
total combined voting power of all classes of stock in one of the other
corporations in such chain.

         17.3 "AFFILIATE" means any corporation that directly, or indirectly
through one or more intermediaries, controls or is controlled by, or is under
common control with, another corporation, where "control" (including the terms
"controlled by" and "under common control with") means the possession, direct or
indirect, of the power to cause the direction of the management and policies of
the corporation, whether through the ownership of voting securities, by contract
or otherwise.

         17.4 "FAIR MARKET VALUE" shall mean, as of any date, the value of a
share of the Company's Common Stock determined by the Board in its sole
discretion, exercised in good faith; PROVIDED, HOWEVER, that where there is a
public market for the Common Stock, the Fair Market Value per share shall be the
average of the closing bid and asked prices of the Common Stock on the last
trading day prior to the date of determination as reported in THE WALL STREET
JOURNAL (or, if not so reported, as otherwise reported by the Nasdaq Stock
Market) or, in the event the Common Stock is listed on a stock exchange or on
the Nasdaq National Market, the Fair Market Value per share shall be the closing
price on the exchange or on the Nasdaq National Market on the last trading date
prior to the date of determination as reported in THE WALL STREET JOURNAL;
PROVIDED, HOWEVER, that notwithstanding the foregoing, with respect to the
Initial Grants that are granted on the Effective Date, the "FAIR MARKET VALUE"
shall mean the price per share at which shares of the Company's Common Stock are
initially offered for sale to the public by the Company's underwriters in the
initial public offering of the Company's Common Stock pursuant to a registration
statement filed with the SEC under the Securities Act.


                                         -5-



INITIAL GRANT

                       COOPER & CHYAN TECHNOLOGY, INC.

                      1995 DIRECTORS STOCK OPTION PLAN

              DIRECTORS NONQUALIFIED INITIAL STOCK OPTION GRANT



     This Stock Option Grant (this "GRANT") is made and entered into as of 
the date of grant set forth below (the "DATE OF GRANT") by and between Cooper 
& Chyan Technology, Inc., a Delaware corporation (the "COMPANY"), and the 
Optionee named below ("OPTIONEE").

Optionee:                         __________________________________________

Optionee's Address:               __________________________________________
                                  __________________________________________


Total Shares Subject to Option:   _________________20,000___________________

Exercise Price Per Share:         __________________________________________

Date of Grant:                    __________________________________________

Expiration Date:                  __________________________________________


     1. GRANT OF OPTION.  The Company hereby grants to Optionee an option 
(this "OPTION") to purchase up to the total number of shares of Common Stock 
of the Company set forth above (collectively, the "SHARES") at the exercise 
price per share set forth above (the "EXERCISE PRICE"), subject to all of the 
terms and conditions of this Grant and the Company's 1995 Directors Stock 
Option Plan (the "PLAN"). Unless otherwise defined herein, capitalized terms 
used herein shall have the meanings ascribed to them in the Plan.

     2. EXERCISE AND VESTING OF OPTION.  Subject to the terms and conditions 
of the Plan and this Grant, this Option shall become exercisable as it vests. 
Subject to the terms and conditions of the Plan and this Grant, this Option 
shall vest as to twenty-five percent (25%) of the Shares upon each of the 
first four (4) successive anniversaries of the Date of Grant so long as the 
Optionee continuously remains a member of the Board of Directors of the 
Company (a "BOARD MEMBER").

     3. RESTRICTION ON EXERCISE.  This Option may not be exercised unless 
such exercise is in compliance with the Securities Act, and all applicable 
state securities laws, as they are in effect on the date of exercise, and the 
requirements of any stock exchange or national market system on which the 
Company's Common Stock may be listed at the time of exercise.  Optionee 
understands that the 




                                             Cooper & Chyan Technology, Inc.
                             Directors Stock Option Grant - Succeeding Grant

Company is under no obligation to register, qualify or list the Shares with 
the SEC, any state securities commission or any stock exchange or national 
market system to effect such compliance.

     4. TERMINATION OF OPTION.  Except as provided below in this Section, 
this Option shall terminate and may not be exercised if Optionee ceases to be 
a Board Member.  The date on which Optionee ceases to be a Board Member shall 
be referred to as the "TERMINATION DATE."

        4.1 TERMINATION GENERALLY.  If Optionee ceases to be a Board Member 
for any reason except death or disability, then this Option, to the extent 
(and only to the extent) that it would have been exercisable by Optionee on 
the Termination Date, may be exercised by Optionee within seven (7) months 
after the Termination Date, but in no event later than the Expiration Date.

        4.2 DEATH OR DISABILITY.  If Optionee ceases to be a Board Member 
because of the death of Optionee or the disability of Optionee within the 
meaning of Section 22(e)(3) of the Code, then this Option, to the extent (and 
only to the extent) that it would have been exercisable by Optionee on the 
Termination Date, may be exercised by Optionee (or Optionee's legal 
representative) within twelve (12) months after the Termination Date, but in 
no event later than the Expiration Date.

     5. MANNER OF EXERCISE.

        5.1 EXERCISE AGREEMENT.  This Option shall be exercisable by delivery 
to the Company of an executed written Directors Stock Option Exercise 
Agreement in the form attached hereto as EXHIBIT A, or in such other form as 
may be approved by the Committee, which shall set forth Optionee's election 
to exercise some or all of this Option, the number of Shares being purchased, 
any restrictions imposed on the Shares and such other representations and 
agreements as may be required by the Company to comply with applicable 
securities laws.

        5.2 PAYMENT.  Payment for the Shares purchased upon exercise of this 
Option may be made (a) in cash or by check; (b) by surrender of shares of 
Common Stock of the Company that have been owned by Optionee for more than 
six (6) months (and which have been paid for within the meaning of SEC Rule 
144 and, if such shares were purchased from the Company by use of a 
promissory note, such note has been fully paid with respect to such shares) 
or were obtained by the Optionee in the open public market, having a Fair 
Market Value equal to the Exercise Price of the Option; (c) by waiver of 
compensation due or accrued to Optionee for services rendered; (d) provided 
that a public market for the Company's stock exists, through a "same day 
sale" commitment from the Optionee and a broker-dealer that is a member of 
the National Association of Securities Dealers (an "NASD DEALER") whereby the 
Optionee irrevocably elects to exercise the Option and to sell a portion of 
the Shares so purchased to pay for the Exercise Price and whereby the NASD 
Dealer irrevocably commits upon receipt of such Shares to forward the 
Exercise Price directly to the Company; (e) provided that a public market for 
the Company's stock exists, through a "margin" commitment from the Optionee 
and a NASD Dealer whereby the Optionee irrevocably elects to exercise the 
Option and to pledge the Shares so purchased to the NASD Dealer in a margin 
account as security for a loan from the NASD Dealer in the amount of the 
Exercise Price, and whereby the NASD Dealer irrevocably commits upon receipt 
of such Shares to forward the Exercise Price directly to the Company; or (f) 
by any combination of the foregoing.


                                     -2-



                                             Cooper & Chyan Technology, Inc.
                             Directors Stock Option Grant - Succeeding Grant

        5.3 WITHHOLDING TAXES.  Prior to the issuance of the Shares upon 
exercise of this Option, Optionee shall pay or make adequate provision for 
any applicable federal or state withholding obligations of the Company.

        5.4 ISSUANCE OF SHARES.  Provided that such notice and payment are in 
form and substance satisfactory to counsel for the Company, the Company shall 
cause the Shares to be issued in the name of Optionee or Optionee's legal 
representative.  To enforce any restrictions on Optionee's Shares, the 
Committee may require Optionee to deposit all certificates, together with 
stock powers or other instruments of transfer approved by the Committee 
appropriately endorsed in blank, with the Company or an agent designated by 
the Company to hold in escrow until such restrictions have lapsed or 
terminated, and the Committee may cause a legend or legends referencing such 
restrictions to be placed on the certificates.

     6. NONTRANSFERABILITY OF OPTION.  During the lifetime of the Optionee, 
this Option shall be exercisable only by Optionee or by Optionee's guardian 
or legal representative, unless otherwise permitted by the Committee.  This 
Option may not be sold, pledged, assigned, hypothecated, trans ferred or 
disposed of in any manner other than by will or by the laws of descent and 
distribution.

     7. INTERPRETATION.  Any dispute regarding the interpretation of this 
Grant shall be submitted by Optionee or the Company to the Committee that 
administers the Plan, which shall review such dispute at its next regular 
meeting. The resolution of such a dispute by the Committee shall be final and 
binding on the Company and on Optionee.  Nothing in the Plan or this Grant 
shall confer on Optionee any right to continue as a Board Member.

     8. ENTIRE AGREEMENT.  The Plan and the Directors Stock Option Exercise 
Agreement in the form attached hereto as Exhibit A, and the terms and 
conditions thereof, are incorporated herein by this reference.  This Grant, 
the Plan and the Directors Stock Option Exercise Agreement constitute the 
entire agreement and understanding of the parties hereto with respect to the 
subject matter hereof and supersede all prior understandings and agreements 
with respect to such subject matter.

                                   COOPER & CHYAN
                                   TECHNOLOGY, INC.

                                   By:
                                      -------------------------------------

                                   Name:
                                        -----------------------------------

                                   Title:
                                         ----------------------------------


                                     -3-



                                             Cooper & Chyan Technology, Inc.
                             Directors Stock Option Grant - Succeeding Grant


                        ACCEPTANCE OF STOCK OPTION GRANT

     Optionee hereby acknowledges receipt of a copy of the Plan, represents 
that Optionee has read and understands the terms and provisions thereof, and 
accepts this Option subject to all the terms and conditions of the Plan and 
this Grant.  Optionee acknowledges that there may be adverse tax consequences 
upon exercise of this Option or disposition of the Shares and that Optionee 
has been advised by the Company that Optionee should consult a qualified tax 
advisor prior to such exercise or disposition.



                                   _________________________________
                                   ________________________, Optionee







      [ACCEPTANCE SIGNATURE PAGE TO DIRECTORS NONQUALIFIED INITIAL
                            STOCK OPTION GRANT]


                                     -4-



SUCCEEDING GRANT

                       COOPER & CHYAN TECHNOLOGY, INC.

                      1995 DIRECTORS STOCK OPTION PLAN

           DIRECTORS NONQUALIFIED SUCCEEDING STOCK OPTION GRANT



     This Stock Option Grant (this "GRANT") is made and entered into as of 
the date of Grant set forth below (the "DATE OF GRANT") by and between Cooper 
& Chyan Technology, Inc., a Delaware corporation (the "COMPANY"), and the 
Optionee named below ("OPTIONEE").

Optionee:                         __________________________________________

Optionee's Address:               __________________________________________
                                  __________________________________________

Total Shares Subject to Option:   _________________5,000____________________

Exercise Price Per Share:         __________________________________________

Date of Grant:                    __________________________________________

Expiration Date:                  __________________________________________


     1. GRANT OF OPTION.  The Company hereby grants to Optionee an option 
(this "OPTION") to purchase up to the total number of shares of Common Stock 
of the Company set forth above (collectively, the "SHARES") at the exercise 
price per share set forth above (the "EXERCISE PRICE"), subject to all of the 
terms and conditions of this Grant and the Company's 1995 Directors Stock 
Option Plan (the "PLAN"). Unless otherwise defined herein, capitalized terms 
used herein shall have the meanings ascribed to them in the Plan.

     2. EXERCISE AND VESTING OF OPTION.  Subject to the terms and conditions 
of the Plan and this Grant, this Option shall become exercisable as it vests. 
 Subject to the terms and conditions of the Plan and this Grant, this Option 
shall vest as to twenty-five percent (25%) of the Shares upon each of the 
first four (4) successive anniversaries of the Date of Grant so long as the 
Optionee continuously remains a member of the Board of Directors of the 
Company (a "BOARD MEMBER").

     3. RESTRICTION ON EXERCISE.  This Option may not be exercised unless 
such exercise is in compliance with the Securities Act, and all applicable 
state securities laws, as they are in effect on the date of exercise, and the 
requirements of any stock exchange or national market system on which the 
Company's Common Stock may be listed at the time of exercise.  Optionee 
understands that the 





                                          Cooper & Chyan Technology, Inc.
                          Directors Stock Option Grant - Succeeding Grant


Company is under no obligation to register, qualify or list the Shares with 
the SEC, any state securities commission or any stock exchange or national 
market system to effect such compliance.

     4. TERMINATION OF OPTION.  Except as provided below in this Section, 
this Option shall terminate and may not be exercised if Optionee ceases to be 
a Board Member.  The date on which Optionee ceases to be a Board Member shall 
be referred to as the "TERMINATION DATE."

        4.1 TERMINATION GENERALLY.  If Optionee ceases to be a Board Member 
for any reason except death or disability, then this Option, to the extent 
(and only to the extent) that it would have been exercisable by Optionee on 
the Termination Date, may be exercised by Optionee within seven (7) months 
after the Termination Date, but in no event later than the Expiration Date.

        4.2 DEATH OR DISABILITY.  If Optionee ceases to be a Board Member 
because of the death of Optionee or the disability of Optionee within the 
meaning of Section 22(e)(3) of the Code, then this Option, to the extent (and 
only to the extent) that it would have been exercisable by Optionee on the 
Termination Date, may be exercised by Optionee (or Optionee's legal 
representative) within twelve (12) months after the Termination Date, but in 
no event later than the Expiration Date.

     5. MANNER OF EXERCISE.

        5.1 EXERCISE AGREEMENT.  This Option shall be exercisable by delivery 
to the Company of an executed written Directors Stock Option Exercise 
Agreement in the form attached hereto as EXHIBIT A, or in such other form as 
may be approved by the Committee, which shall set forth Optionee's election 
to exercise some or all of this Option, the number of Shares being purchased, 
any restrictions imposed on the Shares and such other representations and 
agreements as may be required by the Company to comply with applicable 
securities laws.

        5.2 PAYMENT.  Payment for the Shares purchased upon exercise of this 
Option may be made (a) in cash or by check; (b) by surrender of shares of 
Common Stock of the Company that have been owned by Optionee for more than 
six (6) months (and which have been paid for within the meaning of SEC Rule 
144 and, if such shares were purchased from the Company by use of a 
promissory note, such note has been fully paid with respect to such shares) 
or were obtained by the Optionee in the open public market, having a Fair 
Market Value equal to the Exercise Price of the Option; (c) by waiver of 
compensation due or accrued to Optionee for services rendered; (d) provided 
that a public market for the Company's stock exists, through a "same day 
sale" commitment from the Optionee and a broker-dealer that is a member of 
the National Association of Securities Dealers (an "NASD DEALER") whereby the 
Optionee irrevocably elects to exercise the Option and to sell a portion of 
the Shares so purchased to pay for the Exercise Price and whereby the NASD 
Dealer irrevocably commits upon receipt of such Shares to forward the 
Exercise Price directly to the Company; (e) provided that a public market for 
the Company's stock exists, through a "margin" commitment from the Optionee 
and a NASD Dealer whereby the Optionee irrevocably elects to exercise the 
Option and to pledge the Shares so purchased to the NASD Dealer in a margin 
account as security for a loan from the NASD Dealer in the amount of the 
Exercise Price, and whereby the NASD Dealer irrevocably commits upon receipt 
of such Shares to forward the Exercise Price directly to the Company; or (f) 
by any combination of the foregoing.



                                     -2-



                                          Cooper & Chyan Technology, Inc.
                          Directors Stock Option Grant - Succeeding Grant


        5.3 WITHHOLDING TAXES.  Prior to the issuance of the Shares upon 
exercise of this Option, Optionee shall pay or make adequate provision for 
any applicable federal or state withholding obligations of the Company.

        5.4 ISSUANCE OF SHARES.  Provided that such notice and payment are in 
form and substance satisfactory to counsel for the Company, the Company shall 
cause the Shares to be issued in the name of Optionee or Optionee's legal 
representative.  To enforce any restrictions on Optionee's Shares, the 
Committee may require Optionee to deposit all certificates, together with 
stock powers or other instruments of transfer approved by the Committee 
appropriately endorsed in blank, with the Company or an agent designated by 
the Company to hold in escrow until such restrictions have lapsed or 
terminated, and the Committee may cause a legend or legends referencing such 
restrictions to be placed on the certificates.

     6. NONTRANSFERABILITY OF OPTION.  During the lifetime of the Optionee, 
this Option shall be exercisable only by Optionee or by Optionee's guardian 
or legal representative, unless otherwise permitted by the Committee.  This 
Option may not be sold, pledged, assigned, hypothecated, trans ferred or 
disposed of in any manner other than by will or by the laws of descent and 
distribution.

     7. INTERPRETATION.  Any dispute regarding the interpretation of this 
Grant shall be submitted by Optionee or the Company to the Committee that 
administers the Plan, which shall review such dispute at its next regular 
meeting. The resolution of such a dispute by the Committee shall be final and 
binding on the Company and on Optionee.  Nothing in the Plan or this Grant 
shall confer on Optionee any right to continue as a Board Member.

     8. ENTIRE AGREEMENT.  The Plan and the Directors Stock Option Exercise 
Agreement in the form attached hereto as Exhibit A, and the terms and 
conditions thereof, are incorporated herein by this reference.  This Grant, 
the Plan and the Directors Stock Option Exercise Agreement constitute the 
entire agreement and understanding of the parties hereto with respect to the 
subject matter hereof and supersede all prior understandings and agreements 
with respect to such subject matter.

                                   COOPER & CHYAN
                                   TECHNOLOGY, INC.


                                   By:
                                      -------------------------------------

                                   Name:
                                        -----------------------------------

                                   Title:
                                         ----------------------------------
                                                                           

                                     -3-



                                          Cooper & Chyan Technology, Inc.
                          Directors Stock Option Grant - Succeeding Grant

                         
                      ACCEPTANCE OF STOCK OPTION GRANT

     Optionee hereby acknowledges receipt of a copy of the Plan, represents 
that Optionee has read and understands the terms and provisions thereof, and 
accepts this Option subject to all the terms and conditions of the Plan and 
this Grant.  Optionee acknowledges that there may be adverse tax consequences 
upon exercise of this Option or disposition of the Shares and that Optionee 
has been advised by the Company that Optionee should consult a qualified tax 
advisor prior to such exercise or disposition.



                                   _________________________________
                                   ________________________, Optionee






           [ACCEPTANCE SIGNATURE PAGE TO DIRECTORS NONQUALIFIED
                       SUCCEEDING STOCK OPTION GRANT]




                                     -4-



                                   EXHIBIT A

                 DIRECTORS STOCK OPTION EXERCISE AGREEMENT






                                   Exhibit A
                         COOPER & CHYAN TECHNOLOGY, INC.
                   1995 DIRECTORS STOCK OPTION PLAN (THE "PLAN")
                    DIRECTORS STOCK OPTION EXERCISE AGREEMENT

I hereby elect to purchase the number of shares of Common Stock of COOPER & 
CHYAN TECHNOLOGY, INC. (the "COMPANY") as set forth below:

Optionee:______________________________  Number of Shares Purchased:_________
Social Security Number:________________  Purchase Price per Share:___________
Address:_______________________________  Aggregate Purchase Price:___________
        _______________________________  Date of Stock Option Grant:_________
Type of Stock Option:  Nonqualified      Exact Name of Title to Shares:______
                       Stock Option      ____________________________________


1. DELIVERY OF PURCHASE PRICE.  Optionee hereby delivers to the Company the 
Aggregate Purchase Price, to the extent permitted in the Directors 
Nonqualified Stock Option Grant referred to above (the "GRANT") as follows 
(check as applicable and complete):

[   ]     in cash or by check in the amount of $___________________, receipt 
          of which is acknowledged by the Company;

[   ]     by delivery of _______________________ fully-paid, nonassessable 
          and vested shares of the Common Stock of the Company owned by 
          Optionee for at least six (6) months prior to the date hereof (and 
          which have been paid for within the meaning of SEC Rule 144), or 
          obtained by Optionee in the open public market, and owned free and 
          clear of all liens, claims, encumbrances or security interests, 
          valued at the current Fair Market Value of $___________________ per 
          share;

[   ]     by the waiver hereby of compensation due or accrued to Optionee for 
          services rendered in the amount of $_______________________________;

[   ]     through a "same-day-sale" commitment, delivered herewith, from 
          Optionee and the NASD Dealer named therein, in the amount of 
          $______________________________; or

[   ]     through a "margin" commitment, delivered herewith from Optionee and 
          the NASD Dealer named therein, in the amount of 
          $______________________________________.

2.  MARKET STANDOFF AGREEMENT.  Optionee, if requested by the Company and an 
underwriter of Common Stock (or other securities) of the Company, agrees not 
to sell or otherwise transfer or dispose of any Common Stock (or other 
securities) of the Company held by Optionee during the period requested by 
the managing underwriter following the effective date of a registration 
statement of the Company filed under the Securities Act, provided that all 
officers and directors of the Company are required to enter into similar 
agreements.  Such agreement shall be in writing in a form satisfactory to the 
Company and such underwriter.  The Company may impose stop-transfer 
instructions with respect to the shares (or other securities) subject to the 
foregoing restriction until the end of such period.

3.  TAX CONSEQUENCES.  OPTIONEE UNDERSTANDS THAT OPTIONEE MAY SUFFER ADVERSE 
TAX CONSEQUENCES AS A RESULT OF OPTIONEE'S PURCHASE OR DISPOSITION OF THE 
SHARES.  OPTIONEE REPRESENTS THAT OPTIONEE HAS CONSULTED WITH ANY TAX 
CONSULTANT(S) OPTIONEE DEEMS ADVISABLE IN CONNECTION WITH THE PURCHASE OR 
DISPOSITION OF THE SHARES AND THAT OPTIONEE IS NOT RELYING ON THE COMPANY FOR 
ANY TAX ADVICE.

4.  ENTIRE AGREEMENT.  The Plan and the Grant are incorporated herein by 
reference.  This Agreement, the Plan and the Grant constitute the entire 
agreement of the parties and supersede in their entirety all prior 
understandings and agreements of the Company and Optionee with respect to the 
subject matter hereof, and are governed by California law except for that 
body of law pertaining to conflict of laws.

Date:______________________________  ________________________________________
                                     SIGNATURE OF OPTIONEE




                          COOPER & CHYAN TECHNOLOGY, INC.
                         1995 DIRECTORS STOCK OPTION PLAN

                                SPOUSE'S CONSENT



     I acknowledge that I have read the foregoing Directors Stock Option 
Exercise Agreement (the "AGREEMENT") and that I know its contents.  I hereby 
consent to and approve all the provisions of the Agreement and agree that the 
shares of the Common Stock of Cooper & Chyan Technology, Inc. purchased 
thereunder (the "SHARES") and any interest I may have in such Shares are 
subject to all the provisions of the Agreement.  I will take no action at any 
time to hinder operation of the Agreement on these Shares or any interest I 
may have on them.

____________________________________   Date:________________________________
SIGNATURE OF OPTIONEE'S SPOUSE


___________________________________
OPTIONEE'S NAME - TYPED OR PRINTED


___________________________________
SPOUSE'S NAME - TYPED OR PRINTED