6-Output Low-power Buffer for PCIe Gen1-2-3 and QPI with Zo=85 Ohms

The 9ZXL0651 is a low-power 6-output differential buffer that meets all the performance requirements of the Intel DB1200Z specification. It consumes 50% less power than standard HCSL devices and has internal terminations to allow direct connection to 85 ohm transmission lines. It is suitable for PCI-Express Gen1/2/3 or QPI/UPI applications, and uses a fixed external feedback to maintain low drift for demanding QPI/UPI applications.

Features

  • Low-Power-HCSL outputs w/Zo = 85Ω; save power and board space - no termination resistors required. Ideal for blade servers.
  • Space-saving 40-pin VFQFPN package
  • Fixed feedback path for 0ps input-to-output delay
  • 6 OE# pins; Hardware control of each output
  • PLL or bypass mode; PLL can dejitter incoming clock
  • Selectable PLL bandwidth; minimizes jitter peaking in downstream PLL's
  • Spread Spectrum Compatible; tracks spreading input clock for low EMI
  • Cycle-to-cycle jitter <50ps
  • Output-to-output skew <65 ps
  • Input-to-output delay variation <50ps
  • PCIe Gen3 phase jitter <1.0ps RMS
  • QPI/UPI 9.6GT/s 12UI phase jitter <0.2ps RMS

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
9ZXL0651AKLF Active NDG40P2 VFQFPN 40 C Yes Tray Availability
9ZXL0651AKLFT Active NDG40P2 VFQFPN 40 C Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
9ZXL0651 Datasheet Datasheet PDF 218 KB Oct 27, 2015
Application Notes & White Papers
AN-975 Cascading PLLs Application Note PDF 128 KB Aug 2, 2017
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-835 Differential Input with VCMR being VIH Referenced Application Note PDF 77 KB May 10, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 23, 2014
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 7, 2015
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 12, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 11, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 7, 2014
AN-836 Differential Input to Accept Single-ended Levels Application Note PDF 37 KB May 5, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 23, 2014
AN-808 PCI Express/HCSL Termination Application Note PDF 54 KB Jan 14, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 14, 2014
PCNs & PDNs
PCN# : A1403-03 Gold wire to Copper wire Product Change Notice PDF 42 KB Oct 14, 2014
PCN# : TB1311-01 New Carrier Tape on VFQFPN-28, VFQFPN-40, VFQFPN-48 Product Change Notice PDF 790 KB Apr 7, 2014
Other
The IDT Consumer Products Advantage Overview PDF 4.01 MB Jun 30, 2017
IDT PCI Express Solutions Overview 日本語, 简体中文 Overview PDF 768 KB Apr 19, 2017
The IDT Communications Products Advantage Overview PDF 2.54 MB Feb 13, 2017
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 24, 2016

Software & Tools

Title Other Languages Type Format File Size Date
9ZXL0651 IBIS Model Model - IBIS ZIP 34 KB Dec 15, 2014