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MPC9109 - Block Diagram
MPC9109 - Pinout


Low Voltage 1:18 Clock Distribution Chip

Alternative Products
NOTICE - The following device(s) are recommended alternatives:
Pin-to-pin compatible

The MPC9109 is a 1:18 low voltage clock distribution chip with 2.5 V or 3.3 V LVCMOS output capabilities. The device features the capability to select either a differential LVPECL or an LVCMOS compatible input. The 18 outputs are 2.5 V or 3.3 V LVCMOS compatible and feature the drive strength to drive 50 ? series or parallel terminated transmission lines. With output-to-output skews of 200 ps, the MPC9109 is ideal as a clock distribution chip for the most demanding of synchronous systems. The 2.5 V outputs also make the device ideal for supplying clocks for a high performance Pentium II™ microprocessor based design. For a higher performance version of the 9109 refer to the MPC940L data sheet.


  • LVPECL or LVCMOS clock input
  • 2.5 V LVCMOS outputs for Pentium II microprocessor support
  • 200 ps maximum output-to-output skew @ 3.3 V output
  • Maximum output frequency of 250 MHz @ 3.3 V core
  • 32-lead QFP packaging
  • Dual or single supply device:
    Dual Vcc supply voltage, 3.3V core and 2.5V output
    Single 3.3V Vcc supply voltage for 3.3V outputs
    Single 2.5V Vcc supply voltage for 2.5V I/O
  • For replacement device use 83940DYLF

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Skew (ps)Additive Phase Jitter Typ RMS (ps)
18LVCMOS0.000000 - 250.0000000.000000 - 250.0000002LVPECL, LVCMOS12.5, 3.3200

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
MPC9109ACObsoletePRG32TQFP32CYesTrayCheck Availability


Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Apps Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 13, 2014
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
show all (12)
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
AN-833 Differential Input Self Oscillation Prevention Application Note PDF 94 KB May 6, 2014
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 6, 2014
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 6, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
PDN# : CQ-14-08 Manufacturing Discontinunce PDN Product Discontinuation Notice PDF 486 KB Dec 1, 2014
PCN# : A1401-02 Alternate Copper Wire Assembly Site Product Change Notice PDF 36 KB Feb 16, 2014
PDN# : N-12-48R2 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 138 KB Jun 14, 2013
show all (7)
PDN# : N-12-22R2 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 363 KB Jun 14, 2013
PDN# : N-12-22R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 209 KB Feb 28, 2013
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
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 25, 2016