Product details

Function Differential Additive RMS jitter (typ) (fs) 171 Output frequency (max) (MHz) 800 Number of outputs 8 Output supply voltage (V) 2.5 Core supply voltage (V) 2.5 Output skew (ps) 35 Features Dual 1:4 fanout, Output enable control, Universal inputs Operating temperature range (°C) -40 to 85 Rating Catalog Output type LVDS Input type LVCMOS, LVDS, LVPECL
Function Differential Additive RMS jitter (typ) (fs) 171 Output frequency (max) (MHz) 800 Number of outputs 8 Output supply voltage (V) 2.5 Core supply voltage (V) 2.5 Output skew (ps) 35 Features Dual 1:4 fanout, Output enable control, Universal inputs Operating temperature range (°C) -40 to 85 Rating Catalog Output type LVDS Input type LVCMOS, LVDS, LVPECL
VQFN (RHD) 28 25 mm² 5 x 5
  • Dual 1:4 Differential Buffer
  • Low Additive Jitter <300 fs, RMS in
    10 kHz to 20 MHz
  • Low Within Bank Output Skew of 35ps (Max)
  • Universal Inputs Accept LVDS, LVPECL, LVCMOS
  • One Input Dedicated for Four Output Buffers
  • 8 LVDS Outputs, ANSI EIA/TIA-644A Standard Compatible
  • Clock Frequency up to 800 MHz
  • 2.375–2.625V Device Power Supply
  • LVDS Reference Voltage, VAC_REF, Available for Capacitive Coupled Inputs
  • Industrial Temperature Range –40°C to 85°C
  • Packaged in 5mm × 5mm 28-Pin QFN (RHD)
  • ESD Protection Exceeds 3 kV HBM, 1 kV CDM
  • APPLICATIONS
    • Telecommunications/Networking
    • Medical Imaging
    • Test and Measurement Equipment
    • Wireless Communications
    • General Purpose Clocking

  • Dual 1:4 Differential Buffer
  • Low Additive Jitter <300 fs, RMS in
    10 kHz to 20 MHz
  • Low Within Bank Output Skew of 35ps (Max)
  • Universal Inputs Accept LVDS, LVPECL, LVCMOS
  • One Input Dedicated for Four Output Buffers
  • 8 LVDS Outputs, ANSI EIA/TIA-644A Standard Compatible
  • Clock Frequency up to 800 MHz
  • 2.375–2.625V Device Power Supply
  • LVDS Reference Voltage, VAC_REF, Available for Capacitive Coupled Inputs
  • Industrial Temperature Range –40°C to 85°C
  • Packaged in 5mm × 5mm 28-Pin QFN (RHD)
  • ESD Protection Exceeds 3 kV HBM, 1 kV CDM
  • APPLICATIONS
    • Telecommunications/Networking
    • Medical Imaging
    • Test and Measurement Equipment
    • Wireless Communications
    • General Purpose Clocking

The CDCLVD2104 clock buffer distributes two clock inputs (IN0, IN1) to a total of 8 pairs of differential LVDS clock outputs (OUT0, OUT7). Each buffer block consists of one input and 4 LVDS outputs. The inputs can either be LVDS, LVPECL, or LVCMOS.

The CDCLVD2104 is specifically designed for driving 50- transmission lines. If the input is in single ended mode, the appropriate bias voltage (VAC_REF) should be applied to the unused negative input pin.

Using the control pin (EN), outputs can be either disabled or enabled. If the EN pin is left open two buffers with all outputs are enabled, if switched to a logical "0" both buffers with all outputs are disabled (static logical “0”), if switched to a logical "1", one buffer with four outputs is disabled and another buffer with four outputs is enabled. The part supports a fail safe function. It incorporates an input hysteresis, which prevents random oscillation of the outputs in absence of an input signal.

The device operates in 2.5V supply environment and is characterized from –40°C to 85°C (ambient temperature). The CDCLVD2104 is packaged in small 28-pin, 5-mm × 5-mm QFN package.

The CDCLVD2104 clock buffer distributes two clock inputs (IN0, IN1) to a total of 8 pairs of differential LVDS clock outputs (OUT0, OUT7). Each buffer block consists of one input and 4 LVDS outputs. The inputs can either be LVDS, LVPECL, or LVCMOS.

The CDCLVD2104 is specifically designed for driving 50- transmission lines. If the input is in single ended mode, the appropriate bias voltage (VAC_REF) should be applied to the unused negative input pin.

Using the control pin (EN), outputs can be either disabled or enabled. If the EN pin is left open two buffers with all outputs are enabled, if switched to a logical "0" both buffers with all outputs are disabled (static logical “0”), if switched to a logical "1", one buffer with four outputs is disabled and another buffer with four outputs is enabled. The part supports a fail safe function. It incorporates an input hysteresis, which prevents random oscillation of the outputs in absence of an input signal.

The device operates in 2.5V supply environment and is characterized from –40°C to 85°C (ambient temperature). The CDCLVD2104 is packaged in small 28-pin, 5-mm × 5-mm QFN package.

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Technical documentation

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Type Title Date
* Data sheet Dual 1:4 Low Additive Jitter LVDS Buffer datasheet (Rev. A) 31 Aug 2010

Design & development

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

Evaluation board

CDCLVD2102EVM — CDCLVD2102 Evaluation Module

The CDCLVD1204/CDCLVD2102 are high-performance, low-additive jitter clock buffers. They have twouniversal input buffers that support single-ended or differential clock inputs and are selectable through a control pin (for CDCLVD1204 only). The devices also feature on-chip bias generators that can (...)
User guide: PDF
Not available on TI.com
Simulation model

CDCLVD2104 IBIS Model (Rev. B)

SLLM094B.ZIP (14 KB) - IBIS Model
Design tool

CLOCK-TREE-ARCHITECT — Clock tree architect programming software

Clock tree architect is a clock tree synthesis tool that streamlines your design process by generating clock tree solutions based on your system requirements. The tool pulls data from an extensive database of clocking products to generate a system-level multi-chip clocking solution.
Simulation tool

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 Download
VQFN (RHD) 28 View options

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