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AMD K8 System Clock with AMD, VIA or ALI Chipset

The IDT950405 is a main system clock solution for desktop designs using the AMD K8 CPU. It provides all necessary clock signals for Clawhammer and Sledgehammer with AMD, VIA or ALI systems.

The IDT950405 is part of a whole new line of IDT clock generators and buffers called TCH™ (Timing Control Hub). This part incorporates IDT's newest clock technology which offers more robust features and functionality. Employing the use of a serially programmable I2C interface, this device can adjust the output clocks by configuring the frequency setting, the output divider ratios, selecting the ideal spread percentage, the output skew, the output strength, and enabling/disabling each individual output clock. M/N control can configure output frequency with resolution up to 0.1MHz increment.


  • Programmable output frequency
  • Programmable output divider ratios
  • Programmable output rise/fall time
  • Programmable output skew
  • Programmable spread percentage for EMI control
  • Watchdog timer technology and RESET# output to reset system if system malfunctions
  • Programmable watch dog safe frequency
  • Support I2C Index read/write and block read/write operations
  • Uses external 14.318MHz crystal
  • Supports Hyper Transport Technology (HTTCLK).

Product Specification

Chipset ManufacturerChipset NameClock Spec.Core Voltage (V)Input Freq (MHz)Outputs (#)Platform NamePower Consumption Typ (mW)Spread SpectrumXtal Freq (kHz)
AMD3.314.318000 - 300.000000Yes

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
950405AFLFObsoletePVG48SSOP48CYesTubeCheck Availability
950405AFLFTObsoletePVG48SSOP48CYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
950405 Datasheet Datasheet PDF 137 KB Nov 8, 2006
PCN# : A1506-02 Gold wire to Copper wire Product Change Notice PDF 35 KB Oct 8, 2015
PDN# : K-13-01R2 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 125 KB Oct 3, 2013
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013
show all (5)
PDN# : K-13-01R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 125 KB Feb 28, 2013
PDN# : K-13-01 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 122 KB Jan 16, 2013