Texas Instruments

CDCDB2000 20-Output Clock Buffer for PCIe® Gen 1 to Gen 5

Texas Instruments' clock buffer is designed to meet the performance requirements for QPI and UPI reference clocks

Image of Texas Instruments' CDCDB2000 Clock BufferTexas Instruments' CDCDB2000 20-output LP-HCSL, DB2000QL-compliant clock buffer can distribute the reference clock for PCIe Gen 1 to Gen 5, QuickPath interconnect (QPI), UPI, SAS, and SATA interfaces. The SMBus, SBI, and eight output-enable pins allow the configuration and control of the twenty outputs individually. The CDCDB2000 is a DB2000QL derivative buffer and meets or exceeds the system parameters in the DB2000QL specification. The CDCDB2000 is packaged in an 80-lead, 6 mm × 6 mm TLGA/GQFN package.

Features
  • Twenty LP-HCSL outputs with integrated 85 Ω output terminations
  • Eight hardware output enable (OE#) controls
  • Additive phase jitter after DB2000QL filter: <0.08 ps RMS
  • Supports PCIe Gen 4 and Gen 5 common clock (CC) and individual reference (IR) architectures:
    • Spread spectrum-compatible
  • Cycle-to-cycle jitter: <50 ps
  • Input-to-output delay: <3 ns
  • 3.3 V core and IO supply voltages
  • Hardware-controlled low power mode (PD#)
  • Side-band interface (SBI) for output control in PD# mode
  • Nine selectable SMBus addresses
  • Power consumption: 600 mW
  • Package: 80-pin 6 mm x 6 mm TLGA/GQFN
Applications
  • Microservers and tower servers
  • Storage area networks and host bus adapter cards
  • Network-attached storage
  • Hardware accelerators

CDCDB2000 Clock Buffers

ImageManufacturer Part NumberDescriptionAvailable QuantityPriceView Details
IC CLK BUFFER 1:20 250MHZ 80TLGACDCDB2000NPPTIC CLK BUFFER 1:20 250MHZ 80TLGA0 - Immediate$27.89View Details
IC CLK BUFFER 1:20 250MHZ 80TLGACDCDB2000NPPRIC CLK BUFFER 1:20 250MHZ 80TLGA5682 - Immediate$18.20View Details
Published: 2020-01-09

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