19-output DB1900Z Low-Power Derivative

The 9ZXL1950 is a DB1900Z derivative buffer utilizing Low-Power HCSL (LP-HCSL) outputs to increase edge rates on long traces, reduce board space, and reduce power consumption more than 50% from the original 9ZX21901.It is pin-compatible to the 9ZXL1930 and fully integrates the output terminations. It is pin-compatible to the 9ZXL1930 and fully integrates the output terminations. 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

  • 19 - LP-HCSL Differential Output Pairs w/integrated terminations (Zo = 85Ω)
  • LP-HCSL outputs; up to 90% IO power reduction, better signal integrity over long traces
  • Direct connect to 85Ω transmission lines; eliminates 76 termination resistors, saves 130mm² area
  • Pin compatible to the 9ZXL1930; easy upgrade to reduced board space
  • 72-VFQFPN package; smallest 19 output Z-buffer
  • Fixed feedback path; ~0ps input-to-output delay
  • 9 Selectable SMBus addresses; multiple devices can share same SMBus segment
  • Separate VDDIO for outputs; allows maximum power savings
  • PLL or bypass mode; PLL can dejitter incoming clock
  • 100MHz & 133.33MHz PLL mode; legacy QPI support
  • Selectable PLL BW; minimizes jitter peaking in downstream PLL's
  • Spread spectrum compatible; tracks spreading input clock for EMI reduction
  • SMBus Interface; unused outputs can be disabled

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
9ZXL1950BKLF Active NLG72P1 VFQFPN 72 C Yes Tray Availability
9ZXL1950BKLFT Active NLG72P1 VFQFPN 72 C Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
9ZXL1950 Datasheet Datasheet PDF 261 KB May 11, 2017
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-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-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-834 Hot-Swap Recommendations Application Note PDF 67 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# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location Product Change Notice PDF 583 KB Dec 19, 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# : A1311-03R1 Alternate Assembly Locations Product Change Notice PDF 43 KB Feb 15, 2014
PCN# : A1311-03 Alternate Assembly Locations Product Change Notice PDF 140 KB Dec 2, 2013
PCN# : A1308-01 Add ASEK as Alternate Assembly for VFQFPN-72 Product Change Notice PDF 103 KB Aug 17, 2013
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB Jul 28, 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

Software & Tools

Title Other Languages Type Format File Size Date
9ZXL1950 IBIS Model Model - IBIS ZIP 50 KB Aug 21, 2016

News & Additional Resources