NOTICE - The following device(s) are recommended alternatives:
The 9ZXL1550 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 9ZX21501. It is pin-compatible to the 9ZXL1530 and has the output terminations integrated.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

  • LP-HCSL outputs; up to 90% IO power reduction, better signal integrity over long traces
  • Direct connect to 85Ω transmission lines; eliminates 60 termination resistors, saves 103mm² area
  • Pin compatible to the 9ZXL1530; easy upgrade to reduced board space
  • 64-VFQFPN package; smallest 15 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/UPI 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
  • 15 - LP-HCSL Differential Output Pairs w/integrated terminations (Zo = 85Ω)

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
9ZXL1550BKLF Active NLG64P2 VFQFPN 64 C Yes Tray
Availability
9ZXL1550BKLFT Active NLG64P2 VFQFPN 64 C Yes Reel
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
9ZXL1550 Datasheet Datasheet PDF 295 KB
Application Notes & White Papers
AN-975 Cascading PLLs Application Note PDF 128 KB
AN-828 Termination - LVPECL Application Note PDF 229 KB
AN-891 Driving LVPECL, LVDS, CML, and SSTL Logic with IDT's "Universal" Low-Power HCSL Outputs Application Note PDF 354 KB
AN-844 Termination - AC Coupling Clock Receivers Application Note PDF 82 KB
AN-842 Thermal Considerations in Package Design and Selection Application Note PDF 403 KB
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB
AN-834 Hot-Swap Recommendations Application Note PDF 67 KB
AN-827 Application Relevance of Clock Jitter Application Note PDF 1.06 MB
AN-815 Understanding Jitter Units Application Note PDF 476 KB
AN-805 Recommended Ferrite Beads Application Note PDF 38 KB
AN-808 PCI Express/HCSL Termination Application Note PDF 54 KB
PCNs & PDNs
PCN# : A1904-01 Add Greatek, Taiwan as an Alternate Assembly Facility Product Change Notice PDF 983 KB
PCN# : A1611-02 Add JCET China as Alternate Assembly and Change of Material Set at Alternate Assembly Location Product Change Notice PDF 583 KB
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB
PCN# : A1311-03R1 Alternate Assembly Locations Product Change Notice PDF 43 KB
PCN# : A1311-03 Alternate Assembly Locations Product Change Notice PDF 140 KB
PCN# : A1305-01 Gold Wire to Copper Wire Product Change Notice PDF 148 KB
Other
PCI Express Timing Solutions Overview Overview PDF 275 KB
Timing Solutions Products Overview Overview PDF 4.11 MB
IDT Clock Generation Overview 日本語 Overview PDF 1.83 MB
IDT Clock Distribution Overview 日本語 Overview PDF 3.79 MB

Software & Tools

Title Other Languages Type Format File Size Date
9ZXL1550 IBIS Model Model - IBIS ZIP 50 KB