Skip to main content
MPC940L - Block Diagram
MPC940L - Pinout

MPC940L

Low Voltage 1:18 Clock Distribution Chip

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

The MPC940L 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 150 ps, the MPC940L 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 microprocessor based design. For a similar device at a lower price/performance point, the reader is referred to the MPC9109.

Features

  • LVPECL or LVCMOS Clock Input
  • 2.5 V LVCMOS Outputs for Pentium II Microprocessor Support
  • 150 ps Maximum Output-to-Output Skew
  • Maximum Output Frequency of 250 MHz
  • 32-Lead LQFP Packaging
  • 32-Lead Pb-Free Package Available
  • Dual or Single Supply Device:
  • Dual VCC Supply Voltage, 3.3 V Core and 2.5 V Output
  • Single 3.3 V VCC Supply Voltage for 3.3 V Outputs
  • Single 2.5 V VCC Supply Voltage for 2.5 V I/O

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, 3.3150

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
MPC940LACObsoletePRG32TQFP32CYesTrayCheck Availability
MPC940LACR2ObsoletePRG32TQFP32CYesReelCheck Availability

Documents

Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
no-lock
MPC940L Datasheet Datasheet PDF 188 KB Oct 4, 2016
Apps Notes & White Papers
no-lock
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
no-lock
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 13, 2014
no-lock
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
show all (12)
no-lock
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
no-lock
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
no-lock
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 6, 2014
no-lock
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 6, 2014
no-lock
AN-833 Differential Input Self Oscillation Prevention Application Note PDF 94 KB May 6, 2014
no-lock
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
no-lock
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
no-lock
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
no-lock
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
PCNs & PDNs
no-lock
PDN# : CQ-15-02 Quarter PDN for Manufacturing Discontinuance Product Discontinuation Notice PDF 535 KB May 4, 2015
no-lock
PCN# : A1401-02 Alternate Copper Wire Assembly Site Product Change Notice PDF 36 KB Feb 16, 2014
no-lock
PDN# : N-12-48R2 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 138 KB Jun 14, 2013
show all (8)
no-lock
PDN# : N-12-22R2 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 363 KB Jun 14, 2013
no-lock
PCN# : TB1303-01 Change of Carrier Tape for TQFP-32, TQFP-48 Product Change Notice PDF 472 KB Mar 31, 2013
no-lock
PDN# : N-12-22R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 209 KB Feb 28, 2013
no-lock
PDN# : N-12-48 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 93 KB Dec 21, 2012
no-lock
PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP Product Change Notice PDF 252 KB Oct 19, 2006
Other
no-lock
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB Apr 28, 2016
no-lock
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 25, 2016

Software & Tools

Title Type Format File Size Datesort icon
no-lock
MPC940L IBIS Model Model - IBIS ZIP 6 KB Oct 11, 2007