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932SQL456 Block Diagram
932SQL456 TSSOP Pinout
932SQL456 VFQFPN Pinout


Low-Power CK420BQ Derivative for PCIe Separate Clock Architectures

The 932SQL456 is a low power version of the CK420BQ synthesizer for Intel-based server platforms. It has 85 ohm Low-Power (LP) HCSL outputs that save 48 resistors and reduce power consumption by 50% compared to the standard CK420BQ. The 932SQL456 is driven with a 25MHz crystal for maximum performance. It generates CPU outputs of 100MHz. This device meets Separate- Reference-no-Spread (SRnS) PCIe requirements making it ideal for use in systems that need to communicate “outside the box”.
4 - Low-Power HCSL-compatible (LP-HCSL) CPU outputs
2 - LP-HCSL NS_SAS outputs
2 - LP-HCSL NS_SRC outputs
3 - LP-HCSL SRC outputs
1 - LP-HCSL DOT96 output
1 - 3.3V 48M output
5 - 3.3V PCI outputs
1 - 3.3V 14.318M output


  • Integrated 85 ohm differential terminations; saves 48 resistors compared to CK420BQ
  • LP-HCSL outputs; up to 50% typical power savings compared to standard CK420BQ
  • 64-pin TSSOP and VFQFPN packages; smallest board footprint
  • CPU, SRC, NS_SRC and NS_SAS cycle-cycle jitter <50ps
  • Output to output skew <50ps
  • Phase jitter: PCIe Gen2 <2.2ps rms
  • Phase jitter: PCIe Gen3 <0.7ps rms
  • Phase jitter: QPI <0.3ps rms
  • Phase jitter: NS-SAS <1.3ps rms using long period phase jitter method
  • Available in -40° to +85°C industrial temperature range version; supports demanding operating environments

To request a copy of the datasheet, contact IDT directly or submit a technical support request.

Product Specification

Chipset ManufacturerClock Spec.100M Non-SSC OutputsPCI 33.33M Outputs25M OutputsPower Consumption Typ (mW)App Jitter ComplianceSupply Voltage (V)Output TypeXtal Freq (MHz)
IntelCK420BQL-Derivative Low Power115769PCIe Gen2, PCIe Gen3, QPI, PCIe Gen13.30LVTTL, LP-HCSL25.000000

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
932SQL456AGILFPreviewPAG64TSSOP64IYesTubeCheck Availability
932SQL456AGILFTPreviewPAG64TSSOP64IYesReelCheck Availability
932SQL456AGLFActivePAG64TSSOP64CYesTubeCheck Availability
932SQL456AGLFTActivePAG64TSSOP64CYesReelCheck Availability
932SQL456AKILFPreviewNLG64P2VFQFPN64IYesTrayCheck Availability
932SQL456AKILFTPreviewNLG64P2VFQFPN64IYesReelCheck Availability
932SQL456AKLFActiveNLG64P2VFQFPN64CYesTrayCheck Availability
932SQL456AKLFTActiveNLG64P2VFQFPN64CYesReelCheck Availability


Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Apps Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-891 Driving LVPECL, LVDS, CML, and SSTL Logic with IDT's "Universal" Low-Power HCSL Outputs Application Note PDF 354 KB Dec 10, 2015
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
show all (11)
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
AN-839 RMS Phase Jitter Application Note PDF 149 KB May 7, 2014
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
AN-808 PCI Express/HCSL Termination Application Note PDF 54 KB Jan 15, 2014
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 14, 2016
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 15, 2016
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 21, 2015
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 25, 2016