Exhibit 2.3

                             INTELLECTUAL PROPERTY
                        ASSIGNMENT AND LICENSE AGREEMENT
 
    THIS INTELLECTUAL PROPERTY ASSIGNMENT AND LICENSE AGREEMENT ("Agreement"),
dated as of this      day of December, 1997, is made by and between Raytheon
Company, a Delaware corporation having a place of business at Lexington,
Massachusetts (hereinafter "Raytheon") and Raytheon Semiconductor, Inc., a
Delaware corporation having a place of business at Mountain View, California
(hereinafter "Company").
 
    WHEREAS, Company is engaged in the manufacture and sale of silicon
semiconductor devices at its facilities in Mountain View and San Diego
California which business is the same business previously conducted by the
Semiconductor Division of Raytheon in said locations during the period from
January 1, 1995 to the incorporation of the Company (the "Semiconductor Division
Business");
 
    WHEREAS, Raytheon and Company are parties to an Acquisition Agreement dated
November 25, 1997, as amended on December   , 1997, which provides for the
sale of Company to Fairchild Semiconductor Company, Inc. (the "Purchase
Agreement");
 
    WHEREAS, Raytheon owns certain other Intellectual Property rights used in
the Semiconductor Business which are to be assigned and transferred to Company
and licensed back to Raytheon;
 
    WHEREAS, Raytheon owns various Intellectual Property rights used exclusively
in the Semiconductor Division Business which are to be assigned and transferred
to the Company;
 
    WHEREAS, Raytheon owns certain other Intellectual Property rights used in
the Semiconductor Division Business which are to be licensed to Company;
 
    WHEREAS, Company and Raytheon wish to provide for the above referenced
assignments and licenses under the terms and conditions hereinafter set forth.
 
    NOW, THEREFORE, in consideration of the mutual covenants contained herein
and other good and valuable consideration, the parties hereby agree as follows:
 
1.  DEFINITIONS OF TERMS USED IN THIS AGREEMENT
 
    As used herein the following terms shall have the following respective
meanings:
 
1.1 "COMPANY PATENTS" means Patents which (a) at Closing are owned by Raytheon
    or were developed by a Raytheon employee or consultant and are assignable to
    Raytheon, (b) are used or have been used exclusively by the Semiconductor
    Division Business and (c) are used or have been used in the manufacture,
    design development, and/or sale of silicon semiconductor devices.
 
1.2 "COMPANY INVENTION DISCLOSURES" means Invention Disclosures which (a) at
    Closing are owned by Raytheon or were developed by a Raytheon employee or
    consultant and are 




    assignable to Raytheon, (b) are used or have been used exclusively
    by the Semiconductor Division Business and (c) are used or have been used
    in the manufacture, design development, and/or sale of silicon
    semiconductor devices.
 
1.3 "COMPANY TRADEMARKS" means Trademarks which (a) at Closing are owned by
    Raytheon, (b) are used or have been used exclusively by the Semiconductor
    Division Business and (c) are used or have been used in the manufacture,
    design development, and/or sale of silicon semiconductor devices.
 
1.4 "COMPANY COPYRIGHTS" means Copyrights which (a) at Closing are owned by
    Raytheon or were developed by a Raytheon employee or consultant and are
    assignable to Raytheon, (b) are used exclusively by the Semiconductor
    Division Business and (c) are used or have been used in the manufacture,
    design development, and/or sale of silicon semiconductor devices.
 
1.5 "COMPANY MASK WORKS" means Mask Works which (a) at Closing are owned by
    Raytheon or were developed by a Raytheon employee or consultant and are
    assignable to Raytheon, (b) are used exclusively by the Semiconductor
    Division Business and (c) are used or have been used in the manufacture,
    design, development, and/or sale of silicon semiconductor devices.

1.6 "COMPANY KNOW-HOW" means Know-How which (a) at Closing is owned by Raytheon,
    (b) is used or has been used exclusively by the Semiconductor Division
    Business and (c) is used or has been used in the manufacture, design,
    development, and/or sale of silicon semiconductor devices..
 
1.7 "COMPANY IP" means Company Patents, Company Invention Disclosures, Company
    Trademarks, Company Copyrights, Company Mask Works and Company Know-How.
 
1.8 "RAYTHEON PATENTS" means the Patents, other than Company Patents, which at
    Closing are owned by Raytheon and are used in the manufacture, design
    development, and/or sale of silicon semiconductor devices.
 
1.9 "RAYTHEON COPYRIGHTS" means Copyrights, other than Company Copyrights, which
    at Closing are owned by Raytheon and are used in the manufacture, design
    development, and/or sale of silicon semiconductor devices.
 
1.10 "RAYTHEON MASK WORKS" means Mask Works, other than Company Mask Works,
     which at Closing are owned by Raytheon and are used in the manufacture,
     design, development, and/or sale of silicon semiconductor devices.
 
1.11 "RAYTHEON LICENSED KNOW-HOW" means Know-How, other than Company Know-How,
     which at Closing is owned by Raytheon and is used in the manufacture, 
     design development, and/or sale of silicon semiconductor devices.

                                      2



1.12 "RAYTHEON RESTRICTED LICENSED KNOW-HOW" means Raytheon Licensed Know-How
     which is either (a) disclosed in written or other tangible form with
     appropriate markings indicating its confidential status or (b) disclosed
     orally, if identified as confidential by Raytheon at the time of initial
     disclosure and thereafter summarized and confirmed in written or other
     tangible form by Raytheon with appropriate markings indicating its
     confidential status, which summary must be provided to Company within 
     thirty (30) days of the initial disclosure. Raytheon Restricted Licensed 
     Know-How shall not include information which (a) is developed by the 
     Company independently of receipt from Raytheon; (b) is or becomes publicly 
     known other than through the fault or negligence of the Company or of any 
     party receiving the subject information from Company; or (c) is rightfully
     obtained by Company free of confidentiality restrictions from a third party
     having the lawful right to disclose same and who did not receive such
     information directly or indirectly from Raytheon.
 
1.13 "RAYTHEON NON-RESTRICTED LICENSED KNOW-HOW" means Raytheon Licensed
     Know-How other than Raytheon Restricted Licensed Know-How.
 
1.14 "LICENSED PRODUCTS" means silicon semiconductor devices.
 
1.15 Capitalized terms used but not defined herein shall have the meanings given
     them in the Purchase Agreement.
 
2.   ASSIGNMENT BY RAYTHEON
 
2.1  COMPANY IP--Subject to Sections 2.4, 3.6, 3.7 and 4.5 below, Raytheon 
     hereby assigns and transfers to Company all right, title and interest of 
     Raytheon to and under the Company IP, including the right to sue for pre-
     Closing infringement by any party other than an Affiliate of Raytheon. 
 
2.2  DOCUMENTATION--Raytheon will execute and deliver any deeds, bills of sale,
     assignments or assurances and take and do any other actions and things
     reasonably necessary to vest in Company, and/or to perfect or confirm
     Company's rights in, any and all right, title and interest in, to and under
     any of the Company IP.
 
2.3  PRE-EXISTING RIGHTS--Company acknowledges that the Company IP assigned
     pursuant to this Agreement may be subject to certain pre-existing rights or
     licenses which may have previously been granted to, or acquired by, the
     United States Government or other third parties. Any such pre-existing
     rights and licenses which affect the Semiconductor Division Business as
     conducted by Raytheon as of the Closing Date are listed in Schedule 3.5(c)
     of the Purchase Agreement.

2.4  TRADEMARKS--Except as otherwise set forth in Section 5.7 of the Purchase
     Agreement, no Trademarks are being licensed or sublicensed pursuant to this
     Agreement.

                                      3




3.  LICENSES AND SUBLICENSES
 
3.1 RAYTHEON PATENTS, RAYTHEON COPYRIGHTS AND RAYTHEON MASK WORKS--Except as
    provided in Section 5.7 of the Purchase Agreement with respect to the use of
    names and marks, Raytheon grants to Company a non-exclusive, worldwide,
    royalty free, fully paid-up, non-transferable (except as provided in Section
    3.4 and 3.5 below) license under the Raytheon Patents, Raytheon Copyrights,
    and Raytheon Mask Works to use, sell, offer for sale, have sold, import,
    export, make and have made Licensed Products, provided, however, Raytheon
    shall not grant any license to a third party under the Raytheon Patents,
    Raytheon Copyrights or Raytheon Mask Works, to use, sell, offer for sale,
    have sold, import, export, make or have made Licensed Products unless such
    third party license is part of a cross-licensing agreement entered into in
    settlement of a bona fide infringement claim of one or more of the third
    party's Patents, Copyrights or Mask Works made against Raytheon, Affiliates
    of Raytheon, their successors in interest and/or their customers, agents and
    distributors in connection with any product manufactured or sold by Raytheon
    or any Affiliate of Raytheon, or any service provided by Raytheon or any
    Affiliate of Raytheon, and except as necessary to settle any infringement
    claim which is subject to Section 5.11 of the Purchase Agreement. The
    aforementioned right to license the Raytheon Patents is limited to
    settlement of a patent infringement suit. The aforementioned right to
    license the Raytheon Copyrights is limited to settlement of a Copyright
    infringement suit. The aforementioned right to license the Raytheon Mask
    Works is limited to settlement of a Mask Work infringement suit.
 
3.2 RAYTHEON RESTRICTED LICENSED KNOW-HOW--Raytheon grants to Company a
    non-exclusive, worldwide, royalty free, fully paid-up, non-transferable
    (except as provided in Sections 3.4 and 3.5 below) license under Raytheon
    Restricted Licensed Know-How to use, sell, offer for sale, have sold,
    import, export, make and have made Licensed Products, provided, however,
    Raytheon will not for a period of ten (10) years from the Closing Date grant
    a license to any third party under Raytheon Restricted Licensed Know-How to
    use, sell, offer for sale, have sold, import, export, make or have made
    Licensed Products.
 
3.3 RAYTHEON NON-RESTRICTED LICENSED KNOW-HOW--Raytheon grants to Company a
    non-exclusive, royalty free, fully paid-up, license under Raytheon
    Non-Restricted Licensed Know-How, provided, however, Raytheon will not for a
    period of ten (10) years from the Closing Date grant a license to any third
    party under Raytheon Non-Restricted Licensed Know-How to use, sell, offer
    for sale, have sold, import, export, make or have made Licensed Products.
 
3.4 SUBLICENSING--The licenses granted to Company under Sections 3.1, 3.2, and
    3.3 above include the right to grant sublicenses to third parties, provided
    that any such sublicensee agrees in writing to be bound by all applicable
    provisions of this Agreement in the same way as and to the extent to which
    Company is bound.
 
3.5 TRANSFERABILITY--The licenses granted to Company under Sections 3.1 and 3.2
    above are not transferable by Company except in the case of a
    reorganization, merger or transfer in 

                                      4



    which the Semiconductor Division Business is sold or transferred
    by the Company to a third party, or to an Affiliate.
 
3.6 LICENSE TO RAYTHEON. Company hereby grants to Raytheon and Affiliates of
    Raytheon, a nonexclusive, irrevocable, worldwide, royalty free, fully
    paid-up, nontransferable (except as otherwise provided below or in Section
    5.6 of this Agreement) license, including the right to sublicense, under (i)
    the patents listed in Exhibit 1 hereto, including any other patents (such as
    reissues or foreign counterparts) derived therefrom; (ii) the patent
    applications listed in Exhibit 1 hereto, including all continuation,
    continuation-in-part, divisional, reissue and similar applications which are
    derived from any of the aforementioned patent applications, and (iii) any
    patents issuing from the patent applications which are the subject of
    subpart (ii) above, to make, have made, use, sell, offer for sale,
    distribute, export and import products which are not Licensed Products 
    and to perform or have performed services which do not involve the 
    development or manufacture of Licensed Products, including the
    right to reproduce and distribute copyrighted material and to make
    derivative works therefrom as necessary in connection with the exercise of
    the license in this Section 3.6. However, Raytheon and Affiliates of
    Raytheon are also licensed on the same basis described above in this Section
    3.6 to make, have made, use, sell, offer for sale, distribute, export and
    import products which are either systems or subassemblies of systems and
    which are claimed in Company IP listed in Exhibit 1 (including the right to
    perform related services in connection with such products on the same basis
    described above in this Section 3.6) wherein the system or subassembly
    incorporates one or more Licensed Products if, and only if, the Licensed
    Products (i.e., silicon semiconductor devices) (i) are purchased from
    Company or any Affiliate of Company (as defined in the Purchase Agreement)
    or (ii) are not available to Raytheon and Affiliates of Raytheon from
    Company or an Affiliate of Company in required quantities and under
    reasonable and competitive terms and conditions; and provided, however, that
    the system or subassembly were not manufactured, sold or under development
    by or for Company or the Semiconductor Division Business on or prior to the
    Closing Date. The rights and licenses granted under Section 3.6 are not
    assignable except as otherwise provided in Section 5.6 of this Agreement, or
    to any successor in interest (whether by sale, merger, consolidation or
    otherwise) to all or substantially all of the business to which the license
    applies.
 
4.  CONFIDENTIALITY
 
4.1 GENERAL COMPANY--Subject to the conditions set forth herein, Company agrees
    to hold in confidence and not to divulge, in whole or in part, to any third
    party (except in confidence to those of its employees and agents who require
    knowledge of the same and except as otherwise provided below) any Raytheon
    Restricted Licensed Know-How (including information contained in unpublished
    patent applications or patent disclosures) disclosed to it pursuant to and
    in accordance with this Agreement, and further agrees not to use any such
    Raytheon Restricted Licensed Know-How except for the purposes expressly
    authorized under Section 3.2 above. Company's obligations hereunder with
    regard to any such Raytheon Restricted Licensed Know-How shall in any event
    expire ten (10) years from the date of receipt.

                                      5




4.2
 
4.2.1 Raytheon shall, and shall use reasonable efforts to cause its Affiliates
      and their respective directors, officers, employees, agents and
      representatives ("Raytheon Representatives") to, hold in strict confidence
      and not to use any Company Know-How in its possession or control except as
      otherwise provided below. Notwithstanding the foregoing, Raytheon and
      Raytheon Representatives may use and disclose such information for audit,
      accounting and tax purposes, and for purposes of fulfilling disclosure and
      reporting obligations but only to the extent as in the opinion of 
      Raytheon's counsel is required by law or regulation and also for such 
      other purposes as may be expressly authorized by this Agreement or by 
      the Acquisition Agreement.
 
4.2.2 Raytheon shall not, and shall use reasonable efforts to cause the Raytheon
      Representatives not to, release or otherwise disclose such Company Know-
      How to any third party except Raytheon Representatives who have a need to 
      know such and except as necessary for the purposes authorized above 
      provided that any such authorized recipient shall be bound by appropriate
      obligations of confidentiality which are consistent with those contained 
      in this Section 4.2 except that provided in the case of disclosure 
      required by law or regulation the disclosure may be made pursuant to 
      the protection afforded to confidential information under the applicable 
      law or regulation.
 
4.2.3 Raytheon shall, and shall use reasonable efforts to cause the Raytheon  
      Representatives, to protect any such Company Know-How to prevent 
      the unauthorized use, disclosure, or publication of such Company 
      Know-How. The restrictions set forth above in this Section 4.2 shall 
      not apply (a) to the extent that disclosure is compelled by judicial or 
      administrative process, or in the opinion of Raytheon's counsel, by 
      other requirements of law, or (b) to any information which Raytheon can 
      show was (i) publicly available prior to the Closing Date or thereafter 
      becomes publicly available without any violation of this Agreement on 
      the part of Raytheon or the Raytheon Representatives or (ii) became 
      available to Raytheon or to any Raytheon Representative from a Person 
      other than Company, who, to the best of Raytheon's knowledge, was not 
      subject to any continuing legally binding obligation to Company to keep 
      such information confidential, (iii) was disclosed to others without 
      restriction by Company or by any party who received such Company 
      Know-How from Company, or (iv) was independently developed by any 
      Raytheon Representative without use of or reliance on Company Know-How.
 
4.2.4 Raytheon's obligation under this Section 4.2 shall in any event expire ten
      years from the Closing Date. Raytheon's obligations under this Section 4.2
      with respect to the protection of Company Know-How shall be to use the 
      same degree of care, but no less than reasonable care, to prevent the
      unauthorized use or disclosure of such Company Know-How as it uses with
      respect to the protection of its own information of like importance, and 
      in no event shall Raytheon or Raytheon Representatives be liable for (i)
      inadvertent disclosure provided that the aforementioned degree of care has
      been used and provided that, upon discovery of any such inadvertent
      disclosure, Raytheon shall endeavor to prevent any further inadvertent
      disclosure or (ii) for any special, indirect, consequential, incidental,
      multiple or punitive damages.
 
                                      6



4.3 COMPELLED DISCLOSURE--Should the Company be faced with legal action or a
    requirement under Government regulations to disclose Raytheon Restricted
    Licensed Know-How which is subject to the confidentiality obligations under
    Section 4.1 above, the Company shall forthwith notify Raytheon, and, upon
    the request and at the expense of Raytheon, shall cooperate with the
    Raytheon in contesting such a disclosure. Except in connection with failure
    to discharge responsibilities set forth in the preceding sentence, neither
    party shall be liable in damages for any disclosures legally required
    pursuant to judicial action or Government regulations.
 
4.4 PERMITTED DISCLOSURES--Notwithstanding anything in the foregoing to the
    contrary, the Company may disclose Raytheon Restricted Licensed Know-How
    information or Raytheon Non-Restricted Licensed Know-How information to (i)
    third parties such as vendors, contractors, customers, auditors, insurers,
    counsel and the like as necessary in the ordinary course of business in
    connection with the exercise of the Company's rights under this Agreement,
    (ii) sublicensees or transferees pursuant to Sections 3.4 and 3.5, or (iii)
    third party manufacturers, provided that, in each case, such parties are
    subject to appropriate written obligations of confidentiality at least as
    restrictive as those contained herein.
 
4.5 CLASSIFIED INFORMATION--Company acknowledges that Raytheon Licensed Know-How
    and other Intellectual Property to be disclosed to Company pursuant to this
    Agreement and/or the Purchase Agreement may be considered as Classified
    Information by the United States Government and nothing in this Agreement or
    in the Purchase Agreement shall require Raytheon to disclose Classified
    Information to Company until such time as Company has received necessary
    clearances from the Unites States Government to receive same.
 
5.  MISCELLANEOUS PROVISIONS
 
5.1 PATENT COOPERATION--Raytheon agrees to make its employees reasonably
    available to Company, at the Company's expense, to assist and otherwise
    reasonably cooperate in the prosecution of all pending patent applications
    included within the Company Patents and in the preparation and prosecution
    of patent applications based on the Company Invention Disclosures, to
    execute any and all oaths, declarations, assignments, affidavits and any
    other papers in connection therewith necessary to perfect Company's rights
    therein, and to cooperate in the defense of the validity of the Company
    Patents. Such assistance and cooperation includes, but is not limited to,
    communicating to the Company, or to its successors, assigns and legal
    representatives, any facts known to the employee respecting the Invention
    and testifying in any legal proceedings, signing all lawful papers,
    executing divisionals, continuations, reissues and substitute applications
    and making all lawful oaths.
 
5.2 GOVERNING LAW--The interpretation and construction of this Agreement and all
    amendments hereof and waivers and consents hereunder shall, to the extent
    the particular subject matter is controlled by state law, be governed by 
    and be construed in accordance with the substantive law of the Commonwealth 
    of Massachusetts without regard to the conflicts of laws principles 
    thereof, except that the United States Federal law shall govern any 
    particular subject matter controlled thereby.

                                      7



5.3 AMENDMENT OF AGREEMENT--No oral explanation or oral information be either
    party hereto or its representatives shall alter the meaning or
    interpretation of this Agreement. Except as otherwise expressly incorporated
    herein by reference, all prior proposals and/or understandings, either
    verbal or written, with regard to the subject matter of this Agreement are
    hereby canceled and this Agreement constitutes the entire agreement between
    the parties with regard to the subject matter hereof. No modification,
    alteration, addition or change in the terms hereof shall be binding on
    either party other than as set forth on or subsequent to the date hereof in
    a written documents signed by a duly authorized representative of the party
    to be bound thereby.
 
5.4 NOTICES--All notices, requests and other communications to any party
    hereunder given or required to be given under this Agreement shall be
    effective only if in writing and delivered personally or mailed by first
    class registered or certified mail, postage prepaid, return receipt
    requested, addressed to the respective addresses of the parties as follows:
 

                                        
    IF TO RAYTHEON:                        IF TO COMPANY:

    Raytheon Company                       Raytheon Semiconductor, Inc.
    141 Spring Street                      c/o Fairchild Semiconductor Corporation
    Lexington, Massachusetts 02173         333 Western Avenue
                                           Mail Stop 01-00            
    Attention: Director of Licensing       South Portland, Maine 01406 
    Telecopy: (781) 860-2626                                          
                                           Attention: General Counsel 
                                           Telecopy: (207) 761-6020        
                                                  
                                       


    or such other address as such party may hereafter specify in writing to the
    other party for the purpose by notice to the other party, provided that if
    time is of the essence, the communication shall be simultaneously sent by
    telecopier to the telecopy number set forth above.
 
5.5 NO WAIVER--Failure of a party to insist upon strict adherence to any term of
    this Agreement on any occasion shall not be considered a waiver or deprive
    that party of the right to insist later on adherence thereto, or thereafter
    to insist upon strict adherence to that term or any other term of this
    Agreement. Any waiver must be in writing in order to be effective.
 
5.6 SUCCESSORS AND ASSIGNMENT--This Agreement shall inure to the benefit of, and
    be binding upon, Raytheon and Company and may not be assigned in whole or in
    party by Company, without the prior written consent of Raytheon, and any
    such attempted assignment without such consent shall be null and void,
    except that this Agreement may be assigned, transferred or sublicensed to
    the extent permitted by Sections 3.4 and 3.5 above, provided that the
    assignee or sublicensee agrees in writing to be bound by all applicable
    provisions of this Agreement in the same way and to the same extent as
    Company is bound. Any such assignment by Company shall not relieve Company
    of its continuing obligations under Article 4 above. Raytheon shall have the
    unrestricted right to assign this Agreement 

                                      8



     to any successor to its business, transferee, or otherwise, subject to the 
     rights and licenses that have been granted to the Company hereunder.
 
5.7  NO THIRD PARTY BENEFICIARIES--Nothing herein is intended to, or shall be
     construed to, confer upon any Person not a party hereto any rights or
     benefits hereunder.
 
5.8  COUNTERPARTS--This Agreement may be executed in two counterparts, each of
     which shall be considered an original, but all of which together shall
     constitute the same instrument.
 
5.9  SEVERABILITY--If any term or provision of this Agreement or the application
     thereof to any party hereto or set of circumstances shall, in any
     jurisdiction and to any extent, be finally held to be invalid or
     unenforceable, such term or provision shall only be ineffective as to such
     jurisdiction, and only to the extent of such invalidity or 
     unenforceability, without invalidating or rendering unenforceable any 
     other terms or provisions of this Agreement or under any other 
     circumstances or in any other jurisdiction, and the parties shall 
     negotiate in good faith a substitute provision which comes as close as
     possible to providing the rights and obligations intended to be provided by
     the invalidated or unenforceable term or provision, and puts the parties in
     a position as nearly comparable as possible to the position they would have
     been in but for the finding of invalidity or unenforceability, while
     remaining valid and enforceable.
 
5.10 NO FURTHER REQUIREMENTS--Raytheon shall not be required by anything
     contained in this Agreement to file in any country an application, mask
     work, registration, copyright or patent, or to secure any mask work
     registration, copyright or patent, or once having obtained a mask work
     registration, copyright or patent, to maintain the mask work registration,
     copyright or patent in force.
 
5.11 ASSUMPTION OF RISK--Except to the extent otherwise expressly provided to
     the contrary in the Purchase Agreement, Company assumes all risk and
     liability arising from its use of or reliance on Intellectual Property
     rights assigned or licensed to it by Raytheon pursuant to this Agreement.
 
5.12 NONASSETION. For the period of the Noncompete, Company agrees not to assert
     any Company IP against Raytheon, any Affiliate of Raytheon or their
     customers or distributors with respect to the performance, use, offer for
     sale, import, export, making (including making for Raytheon or an Affiliate
     of Raytheon by others on an OEM or subcontract basis) of any product of
     Raytheon or an Affiliate of Raytheon which is not a Licensed Product or of
     any service of Raytheon or an Affiliate of Raytheon which is not a foundry
     service for making Licensed Products, provided, however, that, in addition
     to the above and to any rights granted under Section 3.6 above, the Company
     shall not assert any Company IP which is listed in Exhibit 1 for the period
     of this agreement against Raytheon any Affiliate of Raytheon or their
     customers or distributors with respect to the performance, use, offer for
     sale, import, export, making (including making for Raytheon or an Affiliate
     of Raytheon by others on an OEM or subcontract basis) of any product of
     Raytheon or an Affiliate of Raytheon which is not a Licensed Product or of
     any service of Raytheon or an Affiliate of Raytheon which is not a foundry
     service for making Licensed Products.

                                       9


 
5.13 DISCLAIMER OF WARRANTIES--Raytheon makes no representation, warranty or
     indemnification to Company pursuant to this Agreement. All representations,
     warranties and indemnifications, if any, made by Raytheon to Company
     regarding the subject matter of this Agreement shall be solely as set forth
     in the Purchase Agreement and without limiting the general applicability of
     the foregoing, nothing in this Agreement shall be construed as:
 
         (i) a warranty or representation by Raytheon or Company as to the 
             validity or scope of any intellectual property rights;
 
        (ii) a warranty or representation by Raytheon or Company that any 
             manufacture, sale, lease, import, use or other disposition of 
             products or services after the Closing Date made pursuant to the 
             intellectual property rights assigned, licensed or sublicensed 
             hereunder will be free from infringement of intellectual 
             property rights of third parties; or
 
       (iii) a requirement of Raytheon or Company to bring or prosecute 
             actions or suits against third parties for infringement or 
             misappropriate of any intellectual property rights assigned or 
             licensed hereunder.
 
5.14 In the event that any third party infringes the Raytheon Patents, Raytheon
     Copyrights or Raytheon Mask Works in connection with Licensed Products and
     such infringement is on a commercial scale which causes detriment to
     Company's business, Raytheon shall give good faith consideration to any
     request from Company that Company be permitted to take action against such
     infringement provided that Raytheon does not, in its sole discretion,
     believe that such action is inconsistent with, or detrimental to, 
     Raytheon's business interests. In the event that Raytheon elects to 
     permit Company to take such action, Raytheon shall permit an action to 
     be brought in its name to the extent required to bring the action and 
     Raytheon shall have a right to participate in such action insofar as 
     Raytheon has an interest and Company will not enter into any settlement 
     agreement relating to the Raytheon Patents, Raytheon Copyrights and 
     Raytheon Mask Works which would jeopardize the scope or validity of the 
     Raytheon Patents, Raytheon Copyrights or Raytheon Mask Works without the 
     express written consent of Raytheon.

                  [remainder of page intentionally left blank]

                                      10



    IN WITNESS WHEREOF, each of the parties has caused this Agreement to be
executed by its duly authorized representatives:
 

RAYTHEON COMPANY                   RAYTHEON SEMICONDUCTOR, INC.
 
BY:___________________________     BY:____________________________

Title:                             Title:

IP Assignment Agreement

                                       11 



                     EXHIBIT 1 TO THE INTELLECTUAL PROPERTY
                        ASSIGNMENT AND LICENSE AGREEMENT
 


                                          SUBJECT                            PRIORITY
CASE   CNTRY   STATUS      INVENTOR(S)     CODE             TITLE              DATE      PATENT   EXP DATE
- -----  -----   -------   ---------------  ------- -------------------------  --------   --------  --------
                                                                          
34990   62        4      VINN 2             621   AUTO-ZERO AMP              JE1990       161166
36017   91        4      LEE D              620   LOGIC LEVEL COMPENSATOR    MY0393        56094
36017   92        4      KONDO A            620   LOGIC LEVEL COMPENSATOR    MY0393        56094
36017   93        4      BRYSON S           620   LOGIC LEVEL COMPENSATOR    MY0393        56094
36288   91        4      RITTER D           620   PROGRAMMABLE FILTERS       JL1894
36288   92        4      BEZZAM I           620   PROGRAMMABLE FILTERS       JL1894                DE0197
36716   20        4      BRYSON 3           620   DC-DC CONV CONTROLLER      JE2497     86108808
36716   91        4      BRYSON S           620   DC-DC CONV CONTROLLER      JE2696       672487   OC2597
36716   92        4      WONG T             620   DC-DC CONV CONTROLLER      JE2696       672487   OC2597
36716   93        4      LOMBARD B          620   DC-DC CONV CONTROLLER      JE2696       672487   OC2597
36718   91        4      RABY D             620   ADAPTIVE NOTCH FILTER      MY1496       649148   JE2697
36718   92        4      ELDON J            620   ADAPTIVE NOTCH FILTER      MY1496       649148
36789   91        4      STOICHITA I        620   LARGE SWING DOWN           SE3096       727818
                                                    CONVERTER
36865   91        4      BRYSON S                 PROGRAMMABLE STEP DOWN...
36864   91        4      ZHANG M ET AL            CMOS RAIL-TO-RAIL
                                                    INPUT/OUT
36918   91        4      BRYSON S           620   DUAL ADJ VOLTAGE           MY0597
                                                    REGULATOR
36919   91        4      RITTER D           620   PROGRAMMABLE ACTIVE        MY0597
                                                    FILTER
36919   92        4      BEZZAM I           620   PROGRAMMABLE ACTIVE        MY0597
                                                    FILTER
31839   24        7      CATE 2             630   ANALOG MULTIPLIER          MR1279      1113160   NO2498
31839   91        7      CATE T             630   ANALOG MULTIPLIER          AP0778      4247789   JA2798
31839   92        7      SCHMOOCK J         630   ANALOG MULTIPLIER          AP0778      4247789   JA2798
33055   91        7      GILL H             640   CURRENT SOURCE             DE2881      4437023   MR1301






                                          SUBJECT                            PRIORITY
CASE   CNTRY   STATUS      INVENTOR(S)     CODE             TITLE              DATE      PATENT   EXP DATE
- -----  -----   -------   ---------------  ------- -------------------------  --------   --------  --------
                                                                          
33311   91        7      FLINK J            621   SLEW-ENHANCED GAIN STAGE   DE2388      4902984   FE2007
33311   92        7      VINN C             621   SLEW-ENHANCED GAIN STAGE   DE2388      4902984   FE2007
34990   91        7      VINN C             621   AUTO-ZERO AMP              JE1989      5061900   OC2908
34990   92        7      SEGARAM P          621   AUTO-ZERO AMP              JE1989      5061900   OC2908
35670   91        7      VINN C             620   TRACK AND HOLD CIRCUIT     JE2392      5315170   MY2411
35670   92        7      HANG P             620   TRACK AND HOLD CIRCUIT     JE2392      5315170   MY2411
35818   91        7      LEE D              860   ATE PIN DRIVER             MY0393      5377202   DE2711
35818   92        7      KONDO A            860   ATE PIN DRIVER             MY0393      5377202   DE2711
35818   93        7      BRYSON S           860   ATE PIN DRIVER             MY0393      5377202   DE2711
35861   91        7      VINN C             620   SLOW RATE BOOSTER          JA1293      5317281   MY3111
35861   92        7      HUANG Y            620   SLOW RATE BOOSTER          JA1293      5317281   MY3111
35875   91        7      SEREDA M           630   HIGH RESISTANCE BILAYER    AU1793      5494845   FE2713
35875   92        7      ZUBRYCKY Z         630   HIGH RESISTANCE BILAYER    AU1793      5494845   FE2713
35919   91        7      TANASE G           626   FUNCTION PROGRAMMABLE PMU  JA2693      5414352   MY0912
35968   91        7      ROHNER D           630   METALIZATION PROCESS       JL2291      5225040   JL0610
35993   91        7      NAYEBI M           620   RECIRCULATING VIDEO A/D    FE0394      5389929   FE1412
35993   92        7      HARTULAR A         620   RECIRCULATING VIDEO A/D    FE0394      5389929   FE1412
35994   91        7      ROSVOLD W          630   THIN FILM RESISTOR         JE2993      5468672   NO2112
36024   91        7      LEE D              620   PIN DRIVER AMPLIFIER       MY0393      5357211   OC1811
36024   92        7      KONDO A            620   PIN DRIVER AMPLIFIER       MY0393      5357211   OC1811
36024   93        7      BRYSON S           620   PIN DRIVER AMPLIFIER       MY0393      5357211   OC1811
36042   91        7      VERNON S           620   D/A CONVERTER SWITCH       JL1293      5339078   AU1611
36150   91        7      HSU D              620   DIGITAL PHASE DETECTOR     NO3093      5486867   JA2313
36150   92        7      WILLIAMS F         620   DIGITAL PHASE DETECTOR     NO3093      5486867   JA2313
36150   93        7      LIU W              620   DIGITAL PHASE DETECTOR     NO3093      5486867   JA2313
36190   91        7      KARDONTCHIK J      626   PHASE LOCKED LOOP          MY0294      5566204   OC1513
36190   92        7      MOY S              626   PHASE LOCKED LOOP          MY0294      5566204   OC1513
36190   93        7      GUEDJ J            626   PHASE LOCKED LOOP          MY0294      5566204   OC1513
36717   91        7      RABY D             620   COMB FILTER ARCHITECTURE   JE1396       664032
36192   91        7      KARDONTCHIK J      626   PHASE DELAY CIRCUIT        AP0894      5399995   MR2112
36192   92        7      MOY S              626   PHASE DELAY CIRCUIT        AP0894      5399995   MR2112
36298   91        7      RABY D             620   DECODER WITH PHASE CNTRL   SE0694      5526060   JE1113
36299   91        7      RABY D             620   CHROMA/LUMA SEPERATOR      SE0694      5424784




    STATUS CODES                       COUNTRY CODES
    -------------                      ---------------

 4   Pending Applications             20     TAIWAN
 7   Issued Patents                   24     CANADA
                                      62     JAPAN
                                      91-94  UNITED STATES