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MK2704 - Block Diagram
MK2704 - Pinout


PLL Audio Clock Synthesizer

The MK2704 is a low cost, low jitter, high-performance PLL clock synthesizer designed to replace oscillators and PLL circuits in set-top box and multimedia systems. Using IDT’s patented analog Phase Locked Loop (PLL) techniques, the device uses a 27 MHz crystal or clock input to produce a buffered reference clock and a selectable audio clock. The audio clock is frequency locked to the 27 MHz clock, assuring that the audio with zero ppm error and video will track perfectly. IDT manufactures the largest variety of Set-Top Box and multimedia clock synthesizers for all applications. Consult IDT to eliminate VCXOs, crystals and oscillators from your board.


  • Packaged in 8-pin SOIC
  • Pb-free packaging
  • Uses an inexpensive, fundamental crystal or clock
  • Selectable audio output clock of 16.9344 MHz, 18.432 MHz, or 36.864 MHz
  • Supports MPEG sampling rates of 384x, 44.1 kHz, 48 kHz, and 96 kHz
  • Patented zero ppm synthesis error in all clocks
  • All frequencies are frequency locked
  • 25 mA output drive capability at TTL levels
  • Advanced, low power, sub-micron CMOS process
  • Operating voltage of 3.3 V or 5 V

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Voltage (V)
2LVCMOS16.934400, 18.432000, 27.000000, 36.86400027.0000001LVCMOS, Crystal23.3, 53.3, 5

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
MK2704SLFObsoleteDCG8SOIC8CYesTubeCheck Availability
MK2704SLFTRObsoleteDCG8SOIC8CYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
MK2704 Datasheet Datasheet PDF 171 KB May 17, 2010
PDN# : U-13-04R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 70 KB May 28, 2013
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013
PDN# : U-13-04 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 69 KB Mar 21, 2013