2-output 3.3 V PCIe Gen1-2-3 Zero Delay / Fanout Buffer

The 9DB233 zero-delay buffer supports PCIe Gen3 requirements, while being backwards compatible to PCIe Gen2 and Gen1. The 9DB233 is driven by a differential SRC output pair from an IDT 932S421 or 932SQ420 or equivalent main clock generator. It attenuates jitter on the input clock and has a selectable PLL bandwidth to maximize performance in systems with or without Spread-Spectrum clocking. An SMBus interface allows control of the PLL bandwidth and bypass options, while 2 clock request (OE#) pins make the 9DB233 suitable for Express Card applications.

Features

  • 2- 0.7 V HCSL differential output pairs
  • Phase jitter: PCIe Gen3 < 1 ps rms
  • Phase jitter: PCIe Gen2 < 3.1 ps rms
  • Phase jitter: PCIe Gen1 < 86 ps peak to peak
  • Supports zero delay buffer mode and fanout mode
  • Bandwidth programming available
  • 33-110 MHz operation in PLL mode
  • 10-110 MHz operation in Bypass mode

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
9DB233AFILF Last Time Buy PCG20 QSOP 20 I Yes Tube Availability
9DB233AFILFT Last Time Buy PCG20 QSOP 20 I Yes Reel Availability
9DB233AFLF Last Time Buy PCG20 QSOP 20 C Yes Tube Availability
9DB233AFLFT Last Time Buy PCG20 QSOP 20 C Yes Reel Availability
9DB233AGILF Active PGG20 TSSOP 20 I Yes Tube Availability
9DB233AGILFT Active PGG20 TSSOP 20 I Yes Reel Availability
9DB233AGLF Active PGG20 TSSOP 20 C Yes Tube Availability
9DB233AGLFT Active PGG20 TSSOP 20 C Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
9DB233 Datasheet Datasheet PDF 202 KB Oct 20, 2016
Application Notes & White Papers
AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 23, 2014
AN-843 PCI Express Reference Clock Requirements Application Note PDF 1.81 MB 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-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 23, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 14, 2014
PCNs & PDNs
PDN# : CQ-17-04(R1) Product Discontinuance Notice Product Discontinuation Notice PDF 606 KB Nov 29, 2017
PDN# : CQ-17-04 Product Discontinuance Notice Product Discontinuation Notice PDF 599 KB Aug 24, 2017
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 13, 2016
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 14, 2016
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 27, 2016
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 12, 2015
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 21, 2015
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 20, 2015
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB Jul 28, 2013
PCN# : TB1303-02 Change of Tape & Reel Packing Method for Selective Products Product Change Notice PDF 361 KB Mar 23, 2013
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 Automotive Advantage Overview PDF 3.55 MB May 26, 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
IDT Fanout Buffers Product Overview Product Brief PDF 739 KB Feb 16, 2015
High-Performance, Low-Phase Noise Clocks Buffers product brief Product Brief PDF 378 KB Aug 13, 2012

Software & Tools

Title Other Languages Type Format File Size Date
9DB233 IBIS Model Model - IBIS ZIP 11 KB Jan 29, 2014