NOTICE - The following device(s) are recommended alternatives:

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.


  • 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


器件号 Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active VFQFPN 72 C 是的 Tray
Active VFQFPN 72 C 是的 Reel


文档标题 language 类型 文档格式 文件大小 日期
9ZX21901B Datasheet 数据手册 PDF 302 KB
应用指南 &白皮书
AN-975 Cascading PLLs 应用文档 PDF 255 KB
AN-828 Termination - LVPECL 应用文档 PDF 322 KB
AN-844 Termination - AC Coupling Clock Receivers 应用文档 PDF 170 KB
AN-842 Thermal Considerations in Package Design and Selection 应用文档 PDF 495 KB
AN-840 Jitter Specifications for Timing Signals 应用文档 PDF 442 KB
AN-834 Hot-Swap Recommendations 应用文档 PDF 153 KB
AN-827 Application Relevance of Clock Jitter 应用文档 PDF 1.15 MB
AN-815 Understanding Jitter Units 应用文档 PDF 565 KB
AN-808 PCI Express/HCSL Termination 应用文档 PDF 137 KB
AN-805 Recommended Ferrite Beads 应用文档 PDF 121 KB
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility 产品变更通告 PDF 983 KB
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location 产品变更通告 PDF 583 KB
PCN# : A1511-01(R1) Add SPEL India as Alternate Assembly Location 产品变更通告 PDF 596 KB
PCN# : A1511-01 Add SPEL India as Alternate Assembly Location 产品变更通告 PDF 544 KB
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages 产品变更通告 PDF 95 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages 产品变更通告 PDF 50 KB
PCN# : A1311-03R1 Alternate Assembly Locations 产品变更通告 PDF 43 KB
PCN# : A1311-03 Alternate Assembly Locations 产品变更通告 PDF 140 KB
PCN# : A1308-01 Add ASEK as Alternate Assembly for VFQFPN-72 产品变更通告 PDF 103 KB
PCN# : A1305-01 Gold Wire to Copper Wire 产品变更通告 PDF 148 KB
9ZX21901B IBIS Model 模型 - IBIS ZIP 12 KB
Clock Distribution Overview 日本語 概览 PDF 217 KB
9ZX21901 Reference Schematic 原理图 PDF 25 KB
IDT Clock Generation Overview 日本語 概览 PDF 1.83 MB
9ZX21901 Block Diagram 方框图 PNG 27 KB
9ZX21901 Schematic 其它 PDF 85 KB