CONSENT OF DELOITTE & TOUCHE LLP, INDEPENDENT AUDITORS

         We consent to the  incorporation  by reference  in this Post  Effective
Amendment No. 2 to the  Registration  Statement No. 333-40508 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