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7151A-50 - Block Diagram
7151A-50 - Pinout


Spread Spectrum Clock Generator

The 7151A-50 is a clock generator for EMI (Electromagnetic Interference) reduction. Spectral peaks are attenuated by modulating the system clock frequency. Down or center spread profiles are selectable. Down spread will not exceed the maximum frequency of an unspread clock, and center spread does not change the average operating frequency of the system IDT offers many other clocks for computers and computer peripherals. Consult IDT when you need to remove crystals and oscillators from your board.


  • Operating voltage of 3.3 V ±0.3 V
  • Packaged in 8-pin SOIC
  • Pb (lead) free package, RoHS compliant
  • Input frequency range of 16.5 to 33.4 MHz
  • Output frequency ranges of 8.3 to 16.7 MHz
  • Provides a spread spectrum clock output (±0.5%, ±1.5% center spread
  • -1.0%, -3.0% down spread)
  • Multiplication rate of x1/2
  • Advanced, low-power CMOS process
  • Pin compatible with the Fujitsu MB88151-500

Product Specification

Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Voltage (V)
LVCMOS8.300000 - 16.70000016.500000 - 33.4000001LVCMOS, Crystal13.33.3

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
7151AM-50LFObsoleteDCG8SOIC8CYesTubeCheck Availability
7151AM-50LFTObsoleteDCG8SOIC8CYesReelCheck Availability
7151AMI-50LFObsoleteDCG8SOIC8IYesTubeCheck Availability
7151AMI-50LFTObsoleteDCG8SOIC8IYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013