[logo]FOLEY
      HOAG LLP
      ATTORNEYS AT LAW







                                                   Robert W. Sweet, Jr.
                                                          Boston Office
                                                         (617) 832-1160
July 13, 2005                                      rsweet@foleyhoag.com





BY FACSIMILE

Angela Crane
Division of Corporation Finance
United States Securities and Exchange Commission
100 F Street, NE
Washington, DC  20549

     Re:   Hittite Microwave Corporation
           Registration Statement on Form S-1
           File No. 333-124664

Dear Ms. Crane:

     I am writing on behalf of Hittite Microwave Corporation to follow up on our
telephone conversation of July 12, 2005. The Staff has asked what consideration
has been given by Hittite and its auditors to inclusion in Note 17 to the
consolidated financial statements of disclosure concerning Hittite's intention
to grant certain options and restricted stock awards prior to the closing of the
offering, as disclosed on pages 4, 26-27 and 70 of the preliminary prospectus.
After consultation with Hittite and PricewaterhouseCoopers LLP, its auditors, I
can provide the following information.

     1. BACKGROUND; THE PROPOSED EQUITY GRANTS.

     The facts concerning the proposed equity grants are as follows. Hittite has
not granted any options or issued any other form of equity-based compensation
since June 2003. On June 30, 2005, the Compensation Committee of the Board of
Directors of Hittite authorized the grant, effective immediately following, and
contingent upon, the effectiveness of the registration statement for Hittite's
initial public offering, of the following:

          (a) restricted stock awards covering shares of common stock having an
          aggregate value, at the initial public offering price, equal to
          $680,371. Substantially all employees of Hittite will receive these
          awards. At an assumed initial public offering price of $15.00 (the
          mid-point of the filing range in the


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          preliminary prospectus), this would amount to approximately 45,000
          shares of common stock.

          (b) nonqualified stock options to purchase an aggregate of 1,300,000
          shares of common stock at an exercise price equal to the initial
          public offering price to be issued to a smaller group of executive and
          management personnel, consisting of approximately one-third of
          Hittite's workforce.

     All of the foregoing awards will vest over a period of five years, and, in
the case of the restricted stock awards, sale of the shares is not permitted
until five years after the date of grant.

     2. ANALYSIS: AU 560 AND SUBSEQUENT EVENTS DISCLOSURE.

     Statement of Auditing Standards No. 1, AU Section 560 identifies two types
of events or transactions that, if they occur after the balance sheet date and
if they materially affect the financial statements, may require disclosure as
"subsequent events" in the financial statements. The first of these, which
relates to events that bear upon estimates that were made in connection with
conditions that existed at the balance sheet date, is clearly inapplicable.

     The second type consists of events that relate to conditions not in
existence at the date of the balance sheet but that are "of such a nature that
disclosure of them is required to keep the financial statements from being
misleading." Whether an event falls into this category is obviously a subjective
question, calling for the application of a significant degree of judgment.

     Given the immateriality of the estimated compensation charge that will be
associated with the awards in relation to Hittite's net income in recent
periods, Hittite does not believe that disclosure as a subsequent event is
required to keep the financial statements from being misleading. Based upon an
assumed initial public offering price of $15 per share, Hittite estimates that
it will incur stock-based compensation expense, beginning in the third quarter
of 2005, of approximately $35,000 per quarter associated with these awards. For
purposes of comparison, Hittite's net income in the first quarter of 2005 was
$4.2 million.

     The dilutive impact of these stock grants on Hittite's equity
capitalization is more difficult to quantify, but is also immaterial in
Hittite's judgment. The effect of the issuance of approximately 45,000 shares
subject to restricted stock awards in addition to the 27 million shares expected
to be outstanding after the offering is clearly insignificant. With regard to
the 1,300,000 shares subject to nonqualified stock options, these will become
exercisable over a five-year period, and their at-market exercise price is
expected to limit their impact on future diluted EPS and diluted shares
outstanding significantly.




     Hittite also notes that disclosure of Hittite's intention to make these
proposed equity awards is already provided in the relevant locations in the
narrative portion of the preliminary prospectus. Thus, investors will be on
notice of this future event.

     For these reasons, Hittite, after consulting with PricewaterhouseCoopers,
concluded that disclosure of these equity awards as a subsequent event in Note
17 was not required.

     However, Hittite acknowledges the concern of the Staff that the
authorization of a significant number of options and restricted stock awards
could be viewed by investors as important information, without regard to its
immediate financial impact. In deference to the Staff's concern, Hittite will
include in Note 17 to the consolidated financial statements included in the
final prospectus for the offering additional disclosure, similar to that which
currently appears in the narrative portion of the preliminary prospectus, as
follows:

     "On June 30, 2005, the Compensation Committee of the Company's Board of
     Directors authorized the grant, pursuant to the Company's 2005 Stock
     Incentive Plan, of non-qualified stock options to purchase an aggregate of
     1,300,000 shares of common stock at an exercise price equal to $[INSERT
     INITIAL PUBLIC OFFERING PRICE] per share and restricted stock awards
     covering [INSERT $680,371 DIVIDED BY THE INITIAL PUBLIC OFFERING PRICE]
     shares of common stock, to be issued prior to the closing of the Company's
     initial public offering. Each such option and restricted stock award will
     vest over a five-year period."

     Hittite will similarly update the text on pages 4, 26-27 and 70 of the
final prospectus to reflect the final number of shares subject to the restricted
stock awards, based on the actual initial public offering price.

     3. RECIRCULATION AND RULE 430A ANALYSIS.

     Hittite does not intend to revise the preliminary prospectus by way of a
pre-effective amendment to reflect this update and the addition to Note 17.
Hittite believes that the repetition in Note 17 of information which, as the
Staff points out, is already contained in several locations in the preliminary
prospectus, would not constitute a substantive change in the information already
disclosed, or a material change in the disclosure contained in the registration
statement at effectiveness. Hittite therefore believes that it may, in reliance
on Rule 430A, include this information in a form of final prospectus filed with
the Commission pursuant to Rule 424, and that no recirculation of a revised
preliminary prospectus should be necessary prior to effectiveness. Further, the
updating of the related narrative disclosure to provide price-related
information regarding the actual number of restricted stock awards in the final
prospectus filed under Rule 424 would also, in Hittite's view, be consistent
with permissible reliance on Rule 430A.




     If the Staff does not concur in these views, we would appreciate a chance
to discuss this at the earliest possible opportunity. For your information,
Hittite currently expects to price the offering on Thursday, July 21, 2005, and
will submit a formal acceleration request in due course.

     Hittite would be pleased to discuss the analysis presented herein with you
at your convenience. If you have any questions, of course, please feel free to
contact me directly at (617) 832-1160.

     Thank you for your continued assistance.


                                           Very truly yours,

                                           /s/ Robert Sweet
                                           ---------------------
                                           Robert W. Sweet, Jr.


RWS:nag

cc:   Eric Atallah
      Jay Mumford, Esq.
      William W. Boecke, Hittite Microwave Corporation
      Michael Papetti, PricewaterhouseCoopers LLP
      Matthew W. Sonsini, Esq., Wilson Sonsini Goodrich & Rosati, P.C.