NOTICE - The following device(s) are recommended alternatives:

The MPC93R51 is a 3.3 V compatible, PLL based clock generator targeted for high performance clock distribution systems. With output frequencies of up to 240 MHz and a maximum output skew of 150 ps, the MPC93R51 is an ideal solution for the most demanding clock tree designs. The device offers 9 low skew clock outputs, each is configurable to support the clocking needs of the various high-performance microprocessors including the PowerQuicc II integrated communication microprocessor. The devices employ a fully differential PLL design to minimize cycle-to-cycle and long-term jitter.


  • 9 outputs LVCMOS PLL clock generator
  • 25ohm240 MHz output frequency range
  • Fully integrated PLL
  • Compatible to various microprocessors such as PowerQuicc II
  • Supports networking, telecommunications and computer applications
  • Configurable outputs: divide-by-2, 4 and 8 of VCO frequency
  • LVPECL and LVCMOS compatible inputs
  • External feedback enables zero-delay configurations
  • Output enable/disable and static test mode (PLL enable/disable)
  • Low skew characteristics: maximum 150 ps output-to-output
  • Cycle-to-cycle jitter max. 22 ps RMS
  • 32-lead LQFP package
  • 32-lead Pb-free Package Available
  • Ambient Temperature Range 0°C to +70°C
  • Pin & Function Compatible with the MPC951

Product Options

Orderable Part ID Part Status Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Obsolete 32 C Yes Tray

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
MPC93R51 Datasheet Datasheet PDF 441 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-831 The Crystal Load curve Application Note PDF 395 KB
AN-845 Termination - LVCMOS Application Note PDF 146 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 128 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 115 KB
AN-839 RMS Phase Jitter Application Note PDF 233 KB
AN-832 Timing Budget and Accuracy Application Note PDF 131 KB
AN-834 Hot-Swap Recommendations Application Note PDF 153 KB
AN-830 Quartz Crystal Drive Level Application Note PDF 143 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 136 KB
AN-801 Crystal-High Drive Level Application Note PDF 202 KB
AN-806 Power Supply Noise Rejection Application Note PDF 438 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1401-02 Alternate Copper Wire Assembly Site Product Change Notice PDF 36 KB
PDN# : N-12-48 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 93 KB
PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP Product Change Notice PDF 252 KB