The 9FGL0841/51 devices are 8-output 3.3V PCIe Gen1–5 clock generators. Each output has a dedicated OE# pin supporting PCIe CLKREQ# functionality. Two different spread spectrum levels, in addition to spread off, are supported. The 9FGL0841/51 supports PCIe Gen1–5 Common Clocked architectures (CC), PCIe Separate Reference no-Spread (SRNS) and Separate Reference Independent Spread (SRIS) clocking architectures.
 
For information regarding evaluation boards and material, please contact your local IDT sales representative.
 

Features

  • PCIe Gen1–5 CC-compliant
  • Supports PCIe SRIS and SRNS clocking
  • Integrated terminations for 100Ω and 85Ω systems save 4 resistors per output
  • Pin-selectable SRnS 0%, CC 0% and CC/SRIS -0.5% spread
  • SMBus-selectable CC/SRIS -0.25% spread
  • One 3.3V LVCMOS REF output with Wake-On-LAN (WOL) support
  • Easy AC-coupling to other logic families, see IDT application note AN-891.
  • Space saving 6 × 6 mm 48-VFQFPN

Product Options

Part Number Part Status Pkg. Type Lead Count (#) Temp. Grade Output Impedance Carrier Type Buy Sample
9FGL0841CKILF
Package Info
 Active VFQFPN 48 I 100 Tray
Availability

Buy / Quote
9FGL0841CKILFT
Package Info
 Active VFQFPN 48 I 100 Reel
Availability
Buy / Quote
9FGL0851CKILF
Package Info
 Active VFQFPN 48 I 85 Tray
Availability

Buy / Quote
9FGL0851CKILFT
Package Info
 Active VFQFPN 48 I 85 Reel
Availability
Buy / Quote

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
9FGL02x1-04x1-06x1-08x1 Family Datasheet – Datasheet PDF 477 KB
User Guides & Manuals
Timing Products for NXP (Freescale) i.MX 简体中文 Guide PDF 321 KB
9FGx08 PCIe Clock Generator Evaluation Boards User Guide – Manual - Eval Board PDF 838 KB
Application Notes & White Papers
AN-975 Cascading PLLs – Application Note PDF 255 KB
AN-891 Driving LVPECL, LVDS, CML, and SSTL Logic with IDT Universal Low-Power HCSL Outputs – Application Note PDF 480 KB
AN-879 Low-Power HCSL vs Traditional HCSL – Application Note PDF 235 KB
AN-843 PCI Express Reference Clock Requirements – Application Note PDF 1.90 MB
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-839 RMS Phase Jitter – Application Note PDF 233 KB
AN-836 Differential Input to Accept Single-ended Levels – Application Note PDF 120 KB
AN-835 Differential Input with VCMR being VIH Referenced – Application Note PDF 160 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-802 Crystal-Measuring Oscillator Negative Resistance – Application Note PDF 136 KB
AN-805 Recommended Ferrite Beads – Application Note PDF 121 KB
PCNs & PDNs
PCN# : TP1910-02 Metal Change to Enhance Spread Performance – Product Change Notice PDF 127 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# : MM1610-01 Improve performance to meet the new PCIe – Product Change Notice PDF 23 KB
Downloads
Software for PCIe Evaluation Kits – Software ZIP 440 KB
9FGL08P1 IBIS Model – Model - IBIS ZIP 203 KB
9FGL0841 IBIS Model – Model - IBIS ZIP 89 KB
Other
PCI Express Timing Solutions Overview – Overview PDF 275 KB
9FGL08xx EVB Reference Schematic – Schematic PDF 34.26 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
info: For device-specific or order-specific documentation, submit a support request.

Boards & Kits

Part Number Title Type Company
EVK9FGL0841 Evaluation Board for the 100ohm 9FGL0841 PCIe Clock Generator Renesas
EVK9FGL0851 Evaluation Board for the 85ohm 9FGL0851 PCIe Clock Generator Renesas

News & Additional Resources

Type Date
Comparing and Contrasting PCIe and Ethernet Clock Jitter Specifications Blog Post May 21, 2018
IDT Extends Leadership in Datacenter and Networking Systems with Launch of Its Latest PCI Express Timing Devices News Apr 30, 2018
An Insider’s Guide to Finding the Right Timing Device for Your System Blog Post Dec 18, 2017
Why Fanout Buffers Make More Sense Blog Post Nov 28, 2017
Time for Performance Blog Post Oct 11, 2017
IDT Adds 3.3 V PCIe Clock Generators to World’s Lowest Power PCI Express Timing Family News Jun 16, 2015