NOTICE - The following device(s) are recommended alternatives:

The 527-01 Clock Slicer is the most flexible way to generate an output clock from an input clock with zero skew. The user can easily configure the device to produce nearly any output clock that is multiplied or divided from the input clock. The part supports non-integer multiplications and divisions. A SYNC pulse indicates when the rising clock edges are aligned with zero skew. Using Phase-Locked Loop (PLL) techniques, the device accepts an input clock up to 200 MHz and produces an output clock up to 160 MHz. The 527-01 aligns rising edges on ICLK and FBIN at a ratio determined by the reference and feedback dividers. For configurable clocks that do not require zero delay, use the 525.


  • Packaged as 28-pin SSOP (150 mil body)
  • Synchronizes fractional clocks rising edges
  • Pin configurable multiplication/division ratio
  • Slices frequency or period
  • SYNC pulse output indicates aligned edges
  • Input clock frequency of 600 kHz to 200 MHz
  • Output clock frequencies up to 160 MHz
  • Very low jitter
  • Duty cycle of 45/55 up to 160 MHz
  • Operating voltage of 3.3V
  • Pin selectable drive strength
  • Multiple outputs available when combined with fanout buffers
  • Industrial temperature version available
  • Pb (lead) free package

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
527R-01ILF Obsolete PCG28 QSOP 28 I Yes Tube
527R-01ILFT Obsolete PCG28 QSOP 28 I Yes Reel
527R-01LF Obsolete PCG28 QSOP 28 C Yes Tube
527R-01LFT Obsolete PCG28 QSOP 28 C Yes Reel

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
527-01 Datasheet Datasheet PDF 111 KB May 21, 2012
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-845 Termination - LVCMOS Application Note PDF 62 KB May 12, 2014
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 12, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 11, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 7, 2014
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 5, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 23, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 23, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 14, 2014
System Applications and Design Guidelines with IDT’s Zero-Delay Buffers Application Note PDF 245 KB Sep 11, 2013
ICS527-01/-02 Demo Board Instructions Application Note PDF 89 KB Apr 10, 2007
PCN# : A1808-01 Transfer Assembly Location from Amkor Philippines for select pacakges Product Change Notice PDF 39 KB Aug 29, 2018
PDN# : CQ-17-04(R1) Product Discontinuance Notice Product Discontinuation Notice PDF 606 KB Nov 29, 2017
PDN# : CQ-17-04 Product Discontinuance Notice Product Discontinuation Notice PDF 599 KB Aug 24, 2017
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB Jul 28, 2013
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 23, 2013
Timing Solutions Products Overview Overview PDF 4.11 MB Oct 31, 2018
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB Apr 28, 2016
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 24, 2016