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MK1726-08 - Block Diagram


Spread Spectrum Clock Generator

The MK1726-08 generates a low EMI output clock and a reference clock from a clock or crystal input. The part is designed to lower EMI through the application of spreading a clock. Using IDT’ proprietary mix of analog and digital Phase-Locked Loop (PLL) technology, the device spreads the frequency spectrum of the output, reducing the frequency amplitude peaks by several dB depending on spread range. The MK1726-08 offers a range of down spread from a high speed clock or crystal input. The MK1726-08 generates one modulated (SSCLK) and unmodulated (REFCLK) clock and is compatible with Cypress CY25819. The modulated clock is controlled by the select pin, and the unmodulated clock has the same frequency as the input clock or crystal.


  • Packaged in 8-pin SOIC
  • Pb (lead) free package
  • Input frequency range 16- 32 MHz
  • Provides modulated and unmodulated clocks
  • Accepts a clock or crystal input
  • Provides down spread modulation
  • Provides power down function
  • Reduce electromagnetic interference (EMI) by 8-16 db
  • Operating voltage of 3.3 V
  • Advanced, low-power CMOS process

Product Specification

Output TypeOutput Freq Range (MHz)Input Freq (MHz)Inputs (#)Input TypeOutput Banks (#)Core Voltage (V)Output Voltage (V)
LVCMOS16.000000 - 32.00000016.000000 - 32.0000001LVCMOS, Crystal23.33.3

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
MK1726-08SLFObsoleteDCG8SOIC8CYesTubeCheck Availability
MK1726-08SLFTRObsoleteDCG8SOIC8CYesReelCheck Availability


Technical Documentation

Title Type Format File Size Datesort icon
Datasheets & Errata
MK1726-08 Datasheet Datasheet PDF 182 KB May 17, 2010
PDN# : U-13-05R2 PRODUCT DISCONTINUANCE NOTICE (REVISED) Product Discontinuation Notice PDF 161 KB Oct 29, 2013
PDN# : U-13-05R1 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 161 KB Jul 25, 2013
PDN# : U-13-05 PRODUCT DISCONTINUANCE NOTICE Product Discontinuation Notice PDF 159 KB Apr 10, 2013
show all (4)
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013