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9ERS3165 - Block Diagram
9ERS3165 - Pinout


64-Pin CK505 Derivative for Embedded Systems

9ERS3165 follows Intel CK505 Yellow Cover specification. This clock synthesizer provides a single chip solution for Intel processors and Intel based systems. 9ERS3165 is driven with a 14.318MHz crystal. It also provides a tight ppm accuracy output for Serial ATA and PCI-Express support.


  • 2 - CPU differential low power push-pull pairs
  • 9 - SRC differential low power push-pull pairs
  • 1 - CPU/SRC selectable differential low power push-pull pair
  • 1 - SRC/DOT selectable differential low power push-pull
  • 5 - PCI, 33MHz
  • 1 - PCI_F, 33MHz free running
  • 1 - USB, 48MHz
  • 1 - REF, 14.318MHz
  • CPU outputs cycle-cycle jitter < 85ps
  • SRC output cycle-cycle jitter < 125ps
  • PCI outputs cycle-cycle jitter < 250ps
  • +/- 100ppm frequency accuracy on CPU & SRC clocks
  • Does not require external pass transistor for voltage regulator
  • Integrated 33ohm series resistors on differential outputs, Zo=50Ω
  • Supports spread spectrum modulation, default is 0.5% down spread
  • Uses external 14.318MHz crystal, external crystal load caps are required for frequency tuning
  • Selectable between one SRC differential push-pull pair and two single-ended outputs
  • Meets PCIEX Gen2 specification on dedicated SRC outputs. Muxed SRC outputs meet PCIEX Gen1 specification, except SRC1.
  • Meets PCIEX <85ps cycle-tocycle jitter for SRC[11:1]
  • Single-ended programmable slew rate control for RFI reduction

Product Specification

Outputs (#)Output TypeOutput Freq Range (MHz)Input Freq (MHz)Output Banks (#)Core Voltage (V)Output Voltage (V)Chipset ManufacturerChipset Name
LVTTL, LP-HCSL14.318000 - 400.00000014.318180103.31.5, 1.8, 2.5, 3.3Intel

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
9ERS3165BGILFActivePAG64TSSOP64IYesTubeCheck Availability
9ERS3165BGILFTActivePAG64TSSOP64IYesReelCheck Availability
9ERS3165BKILFActiveNLG64P2VFQFPN64IYesTrayCheck Availability
9ERS3165BKILFTActiveNLG64P2VFQFPN64IYesReelCheck 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-879 Low-Power HCSL vs Traditional HCSL Application Note PDF 150 KB Apr 8, 2015
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
show all (10)
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
AN-838 Peak-to-Peak Jitter Calculations Application Note PDF 32 KB May 7, 2014
AN-839 RMS Phase Jitter Application Note PDF 149 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
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