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9FGL08 Block Diagram
9FGL08 Pinout


8-output 3.3 V PCIe Clock Generator

The 9FGL08 devices are 3.3V members of IDT’s 3.3V Full-Featured PCIe family.   The devices have 8 output enables for clock management and support 2 different spread spectrum levels in addition to spread off. The 9FGL08 supports PCIe Gen1-4 Common Clocked architectures (CC) and PCIe Separate Reference no-Spread (SRnS)  and Separate Reference Independent Spread (SRIS) clocking architectures. The 9FGL08P1 can be programmed with a user-defined power up default SMBus configuration.
For information regarding evaluation boards and material, please contact your local IDT sales representative.


  • PCIe Gen1-2-3-4 CC-compliant
  • PCIe Gen2-3 SRIS-compliant
  • Supports PCIe SRnS clocking
  • Direct connection to 100W (xx41) or 85W (xx51) transmission lines; saves 32 resistors compared to standard PCIe devices
  • Pin/SMBus selectable 0%, -0.25% or -0.5% spread on DIF outputs; minimize EMI and phase jitter for each application
  • 1 - 3.3V LVCMOS REF output w/Wake-On-LAN (WOL) support
  • Easy AC-coupling to other logic families, see IDT application note AN-891.
  • Space saving 48-pin 6x6mm VFQFPN; minimal board space

Product Specification

App Jitter ComplianceInput Freq (MHz)Inputs (#)Input TypeOutput Freq Range (MHz)Outputs (#)Output TypeOutput Voltage (V)Power Consumption Typ (mW)Output Skew (ps)Supply Voltage (V)Spread Spectrum
PCIe Gen4, PCIe Gen1, PCIe Gen3, PCIe Gen225.0000001LVCMOS, Crystal25.000000, 100.0000009LVCMOS, LP-HCSL0.8, 3.3100503.30Yes

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradeOutput Impedance (Ω)Prog. ClockPb (Lead) FreeCarrier TypeSample & Buy
9FGL0841AKILFNot Recommended
NDG48P1VFQFPN48I100NoYesTrayCheck Availability
9FGL0841AKILFTNot Recommended
NDG48P1VFQFPN48I100NoYesReelCheck Availability
9FGL0851AKILFNot Recommended
NDG48P1VFQFPN48I85NoYesTrayCheck Availability
9FGL0851AKILFTNot Recommended
NDG48P1VFQFPN48I85NoYesReelCheck Availability
9FGL0841BKILFActiveNDG48P1VFQFPN48I100NoYesTrayCheck Availability
9FGL0841BKILFTActiveNDG48P1VFQFPN48I100NoYesReelCheck Availability
9FGL0851BKILFActiveNDG48P1VFQFPN48I85NoYesTrayCheck Availability
9FGL0851BKILFTActiveNDG48P1VFQFPN48I85NoYesReelCheck Availability


Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
9FGL08 Datasheet Datasheet PDF 399 KB Jul 18, 2016
User Guides & Manuals
Timing Products for Freescale i.MX 简体中文 Guide PDF 390 KB Jan 12, 2016
9FGx08 PCIe Clock Generator Evaluation Boards User Guide Manual - Eval Board PDF 748 KB Oct 26, 2015
Apps Notes & White Papers
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-879 Low-Power HCSL vs Traditional HCSL Application Note PDF 150 KB Apr 8, 2015
AN-843 PCI Express Reference Clock Requirements Application Note PDF 1.81 MB May 13, 2014
show all (12)
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-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-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-802 Crystal-Measuring Oscillator Negative Resistance Application Note PDF 52 KB Mar 12, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 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

Software & Tools

Title Type Format File Size Datesort icon
Software for PCIe Evaluation Kits Software ZIP 2.39 MB Aug 10, 2015

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