Skip to main content
9DB801C - Block Diagram
9DB801C - Pinout


8-output Differential Buffer for PCIe Gen1

The 9DB801C is a DB800 Version 2.0 Yellow Cover part with PCI Express® support. It can be used in PC or embedded systems to provide outputs that have low cycle-to-cycle jitter (50 ps), low output-to-output skew (100 ps), and are PCI Express® gen 1 compliant. The 9DB801C supports a 1 to 8 output configuration, taking a spread or non spread differential HCSL input from a CK410(B) main clock such as 954101 and 932S401, or any other differential HCSL pair. 9DB801C can generate HCSL or LVDS outputs from 50 to 200 MHz in PLL mode or 0 to 400 MHz in bypass mode. There are two de-jittering modes available selectable through the HIGH_BW# input pin, high bandwidth mode provides de-jittering for spread inputs and low bandwidth mode provides extra de-jittering for non-spread inputs. The SRC_STOP#, PD#, and individual OE# real-time input pins provide completely programmable power management control.


  • 8 - 0.7 V current-mode differential output pairs
  • Supports zero delay buffer mode and fanout mode
  • Bandwidth programming available
  • Spread spectrum modulation tolerant, 0 to -0.5% down spread and +/- 0.25% center spread.
  • Supports undriven differential outputs in PD# and SRC_STOP# modes for power management.
  • Supports polarity inversion to the output enables, SRC_STOP and PD.
  • Outputs cycle-cycle jitter < 50 ps
  • Outputs skew: 50 ps
  • 50 - 200 MHz operation
  • Extended frequency range in bypass mode to 400 MHz
  • PCI Express® Gen I compliant
  • Real time PLL lock detect output pin
  • 48-pin SSOP/TSSOP package
  • Available in RoHS compliant packaging

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
9DB801BFLFActivePVG48SSOP48CYesTubeCheck Availability
9DB801BFLFTActivePVG48SSOP48CYesReelCheck Availability
9DB801BGLFActivePAG48TSSOP48CYesTubeCheck Availability
9DB801BGLFTActivePAG48TSSOP48CYesReelCheck Availability
9DB801CFLFActivePVG48SSOP48CYesTubeCheck Availability
9DB801CFLFTActivePVG48SSOP48CYesReelCheck Availability
9DB801CGLFActivePAG48TSSOP48CYesTubeCheck Availability
9DB801CGLFTActivePAG48TSSOP48CYesReelCheck Availability


Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
9DB801 Datasheet Datasheet PDF 129 KB Jan 27, 2011
Apps Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
AN-843 PCI Express Reference Clock Requirements Application Note PDF 1.81 MB May 13, 2014
show all (10)
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-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 6, 2014
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 6, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 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# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 28, 2016
show all (10)
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 13, 2015
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 22, 2015
PCN# : A1506-02 Gold wire to Copper wire Product Change Notice PDF 35 KB Oct 8, 2015
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 21, 2015
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB Jul 29, 2013
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 24, 2013
PCN#: TB-0510-05 New Shipping Tube for TSSOP/TVSOP/TSSOP Exposed Product Change Notice PDF 201 KB Dec 13, 2005
IDT PCI Express Solutions Overview 简体中文, 日本語 Overview PDF 945 KB Aug 4, 2016
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

Software & Tools

Title Type Format File Size Datesort icon
9DB801 IBIS Model Model - IBIS ZIP 15 KB Mar 27, 2006

News & Additional Resources

Related Videos

  • 2015-10-19 PCIe Clocking Architectures
  • 2015-10-19 PCIe Common Clock Architecture and its...
  • 2015-10-19 PCIe Separate Reference without Spread Clock...
  • 2015-10-19 PCIe Separate Reference Clock With...