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MPC93R51 - Block Diagram


1:9 LVCMOS Clock Generator

Alternative Products
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 Specification

Core Voltage (V)Input Freq (MHz)Inputs (#)Input TypeOutput Voltage (V)Output Freq Range (MHz)Output TypeOutputs (#)C-C Jitter Max P-P (ps)
3.30.000000 - 300.0000002LVCMOS3.325.000000 - 240.000000LVCMOS940

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
MPC93R51ACObsoletePRG32TQFP32CYesTrayCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
MPC93R51 Datasheet Datasheet PDF 139 KB Mar 14, 2016
Apps Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-831 The Crystal Load curve Application Note PDF 308 KB Sep 22, 2014
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 13, 2014
show all (18)
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
AN-803 Crystal Timing Budget and Accuracy for IDT Timing Clock Products Application Note PDF 44 KB May 8, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
AN-839 RMS Phase Jitter Application Note PDF 149 KB May 7, 2014
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
AN-832 Timing Budget and Accuracy Application Note PDF 48 KB May 6, 2014
AN-830 Quartz Crystal Drive Level Application Note PDF 59 KB May 5, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
AN-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB Mar 12, 2014
AN-806 Power Supply Noise Rejection Application Note PDF 353 KB Jan 15, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
AN-801 Crystal-High Drive Level Application Note PDF 109 KB Jan 15, 2014
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 14, 2016
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 15, 2016
PCN# : A1401-02 Alternate Copper Wire Assembly Site Product Change Notice PDF 36 KB Feb 16, 2014
show all (5)
PDN# : N-12-48 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 93 KB Dec 21, 2012
PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP Product Change Notice PDF 252 KB Oct 19, 2006