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                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D. C. 20549
                                   Form 8 - K

                                 CURRENT REPORT

                       Pursuant to Section 13 or 15(d) of
                       the Securities Exchange Act of 1934



                Date of Report (Date of earliest event reported)
                                   April 6, 2000


                                PMC-Sierra, Inc.
             (Exact name of registrant as specified in its charter)


      Delaware                    0-19084                   94-2925073
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State of incorporation   Commission File Number  IRS Employer Identification No.

                              105-8555 BAXTER PLACE
                   BURNABY, BRITISH COLUMBIA, V5A 4V7, CANADA
                    (address of principal executive offices)

         Company's telephone number, including area code: (604) 415-6000


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       ITEM 2.  ACQUISITION OR DISPOSITION OF ASSETS

         On April 6, 2000,  Registrant  acquired  Extreme Packet  Devices,  Inc.
("Extreme"),  a British  Columbia  (Canada)  corporation  and a privately  held,
fabless semiconductor  company.  Extreme,  located in Kanata,  Ontario,  Canada,
specializes  in  developing  semiconductors  for high  speed IP and ATM  traffic
management at 10 Gigabits per second rates.

         Registrant  acquired Extreme in exchange for Registrant's  Common Stock
shares  with a value of  approximately  $415,000,000.  The  transaction  will be
accounted for as a pooling-of-interests.


         SIGNATURE

         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  Registrant  has duly  caused  this report to be signed on its behalf by the
undersigned duly authorized person.

         Date:  April 12, 2000               PMC-Sierra, Inc. (Registrant)

                                             /s/ John W. Sullivan
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                                             John W. Sullivan
                                             Vice President, Finance
                                             Chief Financial Officer and Counsel