The 932SQ425 is a reduced-pin-count main clock synthesizer for Intel Romley-generation server platforms. The 932SQ425 is driven with a 25 MHz crystal for maximum performance. It generates CPU outputs of 100 or 133.33 MHz.


  • 3 - HCSL CPU outputs
  • 3 - HCSL Non-Spread SAS/SRC outputs
  • 2 - HCSL SRC outputs
  • 1 - HCSL DOT96 output
  • 1 - 3.3V 48M outpu
  • 3 - 3.3V PCI outputs
  • 1 - 3.3V 14.318M output
  • 0.5% down spread capable on CPU/SRC/PCI outputs
  • Lower EMI
  • 56-pin MLF package
  • 21% space savings compared to 932SQ420 64-pin MLF
  • Cycle to cycle jitter: CPU/SRC/NS_SRC/NS_SAS <50ps
  • Phase jitter: PCIe Gen2 <3ps rms
  • Phase jitter: PCIe Gen3
  • Phase jitter: QPI 9.6GB/s <0.2ps rms
  • Phase jitter: NS-SAS <0.4ps rms using raw phase data
  • Phase jitter: NS-SAS <1.3ps rms using Clk Jit Tool 1.6.3

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Package Buy Sample
932SQ425AKLF Obsolete VFQFPN 56 C Yes Tray Package Info
932SQ425AKLFT Obsolete VFQFPN 56 C 1 Reel Package Info

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
932SQ425 Datasheet Datasheet PDF 332 KB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 495 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 442 KB
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 115 KB
AN-839 RMS Phase Jitter Application Note PDF 233 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.15 MB
AN-815 Understanding Jitter Units Application Note PDF 565 KB
AN-808 PCI Express/HCSL Termination Application Note PDF 137 KB
AN-805 Recommended Ferrite Beads Application Note PDF 121 KB
PDN# : CQ-17-04(R1) Product Discontinuance Notice Product Discontinuation Notice PDF 606 KB
PDN# : CQ-17-04 Product Discontinuance Notice Product Discontinuation Notice PDF 599 KB
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB
PCN#: A1309-03 Additional Assembly Sources Product Change Notice PDF 398 KB
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB
932SQ425 Block Diagram Block Diagram PNG 27 KB