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

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Preview TSSOP 64 I Yes Tube
Preview TSSOP 64 I Yes Reel
Active TSSOP 64 C Yes Tube
Active TSSOP 64 C Yes Reel
Preview VFQFPN 64 I Yes Tray
Preview VFQFPN 64 I Yes Reel
Active VFQFPN 64 C Yes Tray
Active VFQFPN 64 C Yes Reel

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
932SQL456 Datasheet Datasheet PDF 7.12 MB
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 322 KB
AN-891 Driving LVPECL, LVDS, CML, and SSTL Logic with IDT Universal Low-Power HCSL Outputs Application Note PDF 480 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
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility Product Change Notice PDF 983 KB
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location Product Change Notice PDF 583 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB
PCI Express Timing Solutions Overview Overview PDF 275 KB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB