The 9DB403 is compatible with the Intel DB400v2 Differential Buffer Specification. This buffer provides 4 PCI Express® Gen2 clocks. The 9DB403 is driven by a differential output pair from a CK410B+, CK505 or CK509B main clock generator.


  • 4 - 0.7 V current-mode differential output pairs
  • Supports zero delay buffer mode and fanout mode
  • Bandwidth programming available
  • 50-100 MHz operation in PLL mode
  • 50-400 MHz operation in Bypass mode
  • 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.
  • Outputs cycle-cycle jitter < 50 ps
  • Outputs skew: 50 ps
  • Phase jitter: PCIe Gen1 < 86 ps peak to peak
  • Phase jitter: PCIe Gen2 < 3.0/3.1 ps rms
  • 28-pin SSOP/TSSOP pacakge
  • Available in RoHS compliant packaging
  • Supports Commercial (0 to +70°C) and Industrial (-40 to +85°C) temperature ranges

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
9DB403DFILF Active PYG28 SSOP 28 I Yes Tube
9DB403DFILFT Active PYG28 SSOP 28 I Yes Reel
9DB403DFLF Active PYG28 SSOP 28 C Yes Tube
9DB403DFLFT Active PYG28 SSOP 28 C Yes Reel
9DB403DGILF Active PGG28 TSSOP 28 I Yes Tube
9DB403DGILFT Active PGG28 TSSOP 28 I Yes Reel
9DB403DGLF Active PGG28 TSSOP 28 C Yes Tube
9DB403DGLFT Active PGG28 TSSOP 28 C Yes Reel


タイトル 他の言語 タイプ フォーマット ファイルサイズ 日付
9DB403D Datasheet Datasheet PDF 194 KB 10月 31, 2012
AN-828 Termination - LVPECL Application Note PDF 229 KB 7月 5, 2016
AN-843 PCI Express Reference Clock Requirements Application Note PDF 1.81 MB 5月 12, 2014
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB 5月 11, 2014
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB 5月 7, 2014
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB 4月 23, 2014
AN-815 Understanding Jitter Units Application Note PDF 476 KB 4月 23, 2014
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB 1月 14, 2014
Timing Solutions Products Overview Overview PDF 4.11 MB 10月 31, 2018
PCI Express® Timing Solutions Overview Overview PDF 301 KB 4月 19, 2018
IDT Clock Generation Overview (日本語) English Overview PDF 1.83 MB 4月 28, 2016
IDT Clock Distribution Overview (日本語) English Overview PDF 3.79 MB 4月 24, 2016