CONSENT OF DELOITTE & TOUCHE LLP, INDEPENDENT AUDITORS

           We consent to the  incorporation  by reference in this Post Effective
Amendment No. 1 to the  Registration  Statement No. 333-44212 on Form S-8 of our
report  dated  January  17,  2000  (July  11,  2000 as to  Notes 2 and 4) on the
consolidated financial statements of PMC-Sierra, Inc. appearing in Amendment No.
1 to Registration  Statement No. 333-41878 of PMC-Sierra,  Inc. on Form S-4, and
of our  report  dated  July  19,  2000  on the  financial  statements  of  Datum
Telegraphic  Inc.  for the year ended  August 31, 1999  appearing in the Current
Report on Form 8-K/A1 of PMC-Sierra, Inc. dated September 28, 2000.



/s/DELOITTE & TOUCHE LLP

Vancouver, British Columbia, Canada
October 31, 2000