Product details

Number of outputs 8 Additive RMS jitter (typ) (fs) 38 Core supply voltage (V) 3.3 Output supply voltage (V) 3.3 Output skew (ps) 50 Operating temperature range (°C) -40 to 105 Rating Catalog Output type LP-HCSL Input type LP-HCSL
Number of outputs 8 Additive RMS jitter (typ) (fs) 38 Core supply voltage (V) 3.3 Output supply voltage (V) 3.3 Output skew (ps) 50 Operating temperature range (°C) -40 to 105 Rating Catalog Output type LP-HCSL Input type LP-HCSL
VQFN (RSL) 48 36 mm² 6 x 6
  • 8 LP-HCSL outputs with programmable integrated 85Ω (default) or 100Ω differential output terminations
  • 8 hardware output enable (OE#) controls
  • Additive phase jitter after PCIE Gen 7 filter: 11.3fs, RMS (maximum)
  • Additive phase jitter after PCIE Gen 6 filter: 16.1fs, RMS (maximum)
  • Additive phase jitter after PCIE Gen 5 filter: 25fs, RMS (maximum)
  • Additive phase jitter after DB2000Q filter: 38fs, RMS (maximum)
  • Supports Common Clock (CC) and Individual Reference (IR) architectures
    • Spread spectrum-compatible
  • Output-to-output skew: < 50ps
  • Input-to-output delay: < 3ns
  • Fail-safe input

  • Programmable output slew rate control

  • 3.3V core and IO supply voltages
  • Hardware-controlled low power mode (PD#)
  • Current consumption: 72mA maximum
  • 6mm × 6mm, 48-pin VQFN package
  • 8 LP-HCSL outputs with programmable integrated 85Ω (default) or 100Ω differential output terminations
  • 8 hardware output enable (OE#) controls
  • Additive phase jitter after PCIE Gen 7 filter: 11.3fs, RMS (maximum)
  • Additive phase jitter after PCIE Gen 6 filter: 16.1fs, RMS (maximum)
  • Additive phase jitter after PCIE Gen 5 filter: 25fs, RMS (maximum)
  • Additive phase jitter after DB2000Q filter: 38fs, RMS (maximum)
  • Supports Common Clock (CC) and Individual Reference (IR) architectures
    • Spread spectrum-compatible
  • Output-to-output skew: < 50ps
  • Input-to-output delay: < 3ns
  • Fail-safe input

  • Programmable output slew rate control

  • 3.3V core and IO supply voltages
  • Hardware-controlled low power mode (PD#)
  • Current consumption: 72mA maximum
  • 6mm × 6mm, 48-pin VQFN package

The CDCDB800 is a 8-output LP-HCSL, DB800ZL-compliant, clock buffer capable of distributing the reference clock for PCIe Gen 1-7, QuickPath Interconnect (QPI), UPI, SAS, and SATA interfaces. The SMBus interface and eight output enable pins allow the configuration and control of all eight outputs individually. The CDCDB800 is a DB800ZL derivative buffer and meets or exceeds the system parameters in the DB800ZL specification. The device also meets or exceeds the parameters in the DB2000Q specification. The CDCDB800 is packaged in a 6mm × 6mm, 48-pin VQFN package.

The CDCDB800 is a 8-output LP-HCSL, DB800ZL-compliant, clock buffer capable of distributing the reference clock for PCIe Gen 1-7, QuickPath Interconnect (QPI), UPI, SAS, and SATA interfaces. The SMBus interface and eight output enable pins allow the configuration and control of all eight outputs individually. The CDCDB800 is a DB800ZL derivative buffer and meets or exceeds the system parameters in the DB800ZL specification. The device also meets or exceeds the parameters in the DB2000Q specification. The CDCDB800 is packaged in a 6mm × 6mm, 48-pin VQFN package.

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Technical documentation

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* Data sheet CDCDB800 DB800ZL-Compliant 8-Output Clock Buffer for PCIe Gen 1 to Gen 7 datasheet (Rev. C) PDF | HTML 07 Aug 2025

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

CDCDB800EVM — CDCDB800 evaluation module is an 8-output LP-HCSL clock buffer for PCIe® Gen 1 to Gen 5 application

CDCDB800 evaluation module is an 8-output LP-HCSL, DB800ZL compliant, clock buffer capable of distributing the reference clock for PCIe® Gen 1 to Gen 5 application, QuickPath Interconnect (QPI), UPI, SAS, and SATA interfaces. The SMBus interface and eight outputs enable pins to allow the (...)
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Support software

TICSPRO-SW TICS Pro GUI and Live Programming Tool for Clocking Devices

Texas Instruments clocks and synthesizers (TICS) pro software is used to program the evaluation modules (EVMs) for product numbers with these prefixes: CDC, LMK and LMX. These products include phase-locked loops and voltage-controlled oscillators (PLL+VCO), synthesizers and clocking devices.

Supported products & hardware

Supported products & hardware

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Simulation model

CDCDB800 IBIS model

SNAM247.ZIP (30 KB) - IBIS Model
Design tool

PLLATINUMSIM-SW PLL loop filter, phase noise, lock time, and spur simulation tool

PLLATINUMSIM-SW is a simulation tool that allows users to create detailed designs and simulations of our PLLatinum™ integrated circuits, which include the LMX series of phase-locked loops (PLLs) and synthesizers.

Supported products & hardware

Supported products & hardware

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Gerber file

CDCDB800EVM Gerber Files

SNAC094.ZIP (720 KB)
Gerber file

CDCDB800EVM Altium Design Files

SNAR045.ZIP (1989 KB)
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PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
Package Pins CAD symbols, footprints & 3D models
VQFN (RSL) 48 Ultra Librarian

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