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9ZX21901B - Block Diagram
9ZX21901B - Pinout

9ZX21901B

19-output DB1900Z Compliant Buffer

The 9ZX21901B is a version of the Intel DB1900Z Differential Buffer with an ajdustable external feedback path allowing the user to eliminate trace delays from their design.  It is suitable for PCIe Gen3 or QPI applications. The part is backwards compatible to PCIe Gen1 and Gen2. The device maintains low drift for critical QPI applications. In bypass mode, the IDT9ZX21901 can provide outputs up to 400MHz. See the 9ZX21901C for a fixed external feedback path.

Features

  • 19 - 0.7V HCSL differential HCSL output pairs
  • Adjustable external feedback path
  • Phase jitter: PCIe Gen3 < 1ps rms
  • Phase jitter: QPI 9.6GT/s < 0.2ps rms
  • PLL or bypass mode
  • PLL can dejitter incoming clock
  • 9 selectable SMBus Addresses
  • 8 OE# pins
  • 100MHz or 133MHz PLL mode operation for PCIe and QPI applications
  • Selectable PLL bandwidth minimizes jitter peaking in downstream PLL’s
  • Spread Spectrum Compatible

Product Options

Orderable Part IDPart StatusPkg. CodePkg. TypeLead Count (#)Temp. GradePb (Lead) FreeCarrier TypeSample & Buy
9ZX21901BKLFActiveNLG72VFQFPN72CYesTrayCheck Availability
9ZX21901BKLFTActiveNLG72VFQFPN72CYesReelCheck Availability

Documents

Technical Documentation

Title Other Languages Type Format File Size Datesort icon
Datasheets & Errata
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9ZX21901B Datasheet Datasheet PDF 252 KB Jun 6, 2016
Apps Notes & White Papers
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AN-828 Termination - LVPECL Application Note PDF 229 KB Jul 5, 2016
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AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB May 13, 2014
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AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB May 12, 2014
show all (9)
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AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 8, 2014
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AN-834 Hot-Swap Recommendations Application Note PDF 67 KB May 6, 2014
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AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB Apr 24, 2014
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AN-815 Understanding Jitter Units Application Note PDF 476 KB Apr 24, 2014
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AN-805 Recommended Ferrite Beads Application Note PDF 38 KB Jan 15, 2014
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AN-808 PCI Express/HCSL Termination Application Note PDF 54 KB Jan 15, 2014
PCNs & PDNs
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PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location Product Change Notice PDF 596 KB Jan 28, 2016
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PCN# : A1511-01 Add SPEL India as Alternate Assembly Location Product Change Notice PDF 544 KB Nov 13, 2015
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PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 22, 2015
show all (8)
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PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 21, 2015
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PCN# : A1311-03R1 Alternate Assembly Locations Product Change Notice PDF 43 KB Feb 16, 2014
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PCN# : A1311-03 Alternate Assembly Locations Product Change Notice PDF 140 KB Dec 3, 2013
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PCN# : A1308-01 Add ASEK as Alternate Assembly for VFQFPN-72 Product Change Notice PDF 103 KB Aug 18, 2013
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PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB Jul 29, 2013
Other
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IDT PCI Express Solutions Overview 简体中文, 日本語 Overview PDF 945 KB Aug 4, 2016
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IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB Apr 28, 2016
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IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB Apr 25, 2016
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9ZX21901 Reference Schematic Schematic PDF 48 KB Jan 23, 2015
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9ZX21901 Block Diagram Block Diagram PNG 27 KB Feb 7, 2012
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9ZX21901 Schematic Misc PDF 85 KB Mar 29, 2010

Software & Tools

Title Type Format File Size Datesort icon
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9ZX21901B IBIS Model Model - IBIS ZIP 12 KB Mar 22, 2013