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CDCUN1208LP

ACTIVE

Ultra-low power, 2:8 fan-out buffer with universal inputs and outputs

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Data sheet

CDCUN1208LP

ACTIVE
Data sheet Order now

Product details

Function Differential, Fanout Additive RMS jitter (typ) (fs) 200 Output frequency (max) (MHz) 400 Number of outputs 8 Output supply voltage (V) 1.8, 2.5, 3.3 Core supply voltage (V) 1.8, 2.5, 3.3 Output skew (ps) 50 Features 3.3-V VCC/VDD, I2C interface, Pin programmable Operating temperature range (°C) -40 to 85 Rating Catalog Output type HCSL Input type HCSL
Function Differential, Fanout Additive RMS jitter (typ) (fs) 200 Output frequency (max) (MHz) 400 Number of outputs 8 Output supply voltage (V) 1.8, 2.5, 3.3 Core supply voltage (V) 1.8, 2.5, 3.3 Output skew (ps) 50 Features 3.3-V VCC/VDD, I2C interface, Pin programmable Operating temperature range (°C) -40 to 85 Rating Catalog Output type HCSL Input type HCSL
VQFN (RHB) 32 25 mm² 5 x 5
  • Supports PCIe Gen1, Gen2, Gen3
  • Configuration Options (Through Pins or SPI/I2C):
    • Input Type (HCSL, LVDS, LVCMOS)
    • Output Type (HCSL, LVDS, LVCMOS)
    • Signal Edge Rate (Slow, Medium, Fast)
    • Clock Input Divide Value (/1, /2, /4, /8) – IN2 Only
  • Low-Power Consumption and Power Management Features, Including 1.8-V Operation and Output Enable Control
  • Integrated Voltage Regulators to Improve PSNR
  • Excellent Additive Jitter Performance
    • 200 fs RMS (10 kHz to 20 MHz), LVDS at
      100 MHz
    • 160 fs RMS (10 kHz to 20 MHz), HCSL at
      100 MHz
  • Maximum Operating Frequency:
    • Differential Mode: up to 400 MHz
    • LVCMOS Mode: up to 250 MHz
  • ESD Protection Exceeds 2-kV HBM, 500-V CDM
  • Industrial Temperature Range (–40°C to 85°C)
  • Wide Supply Range (1.8 V, 2.5 V, or 3.3 V)
  • Supports PCIe Gen1, Gen2, Gen3
  • Configuration Options (Through Pins or SPI/I2C):
    • Input Type (HCSL, LVDS, LVCMOS)
    • Output Type (HCSL, LVDS, LVCMOS)
    • Signal Edge Rate (Slow, Medium, Fast)
    • Clock Input Divide Value (/1, /2, /4, /8) – IN2 Only
  • Low-Power Consumption and Power Management Features, Including 1.8-V Operation and Output Enable Control
  • Integrated Voltage Regulators to Improve PSNR
  • Excellent Additive Jitter Performance
    • 200 fs RMS (10 kHz to 20 MHz), LVDS at
      100 MHz
    • 160 fs RMS (10 kHz to 20 MHz), HCSL at
      100 MHz
  • Maximum Operating Frequency:
    • Differential Mode: up to 400 MHz
    • LVCMOS Mode: up to 250 MHz
  • ESD Protection Exceeds 2-kV HBM, 500-V CDM
  • Industrial Temperature Range (–40°C to 85°C)
  • Wide Supply Range (1.8 V, 2.5 V, or 3.3 V)

The CDCUN1208LP is a 2:8 fan-out buffer featuring a wide operating supply range, two universal differential/single-ended inputs, and universal outputs (HCSL, LVDS, or LVCMOS) with edge-rate control. The clock buffer supports PCIe Gen1, Gen2 and Gen3. One of the device inputs includes a divider that provides divide values of /1, /2, /4, or /8. The CDCUN1208LP is offered in a 32-pin QFN package, reducing the solution footprint. The device is flexible and easy to use. The state of certain pins determines device configuration at power up. Alternately, the CDCUN1208LP provides a SPI/I2C port with which a host processor controls device settings. The CDCUN1208LP delivers excellent additive jitter performance, and low power consumption. The output section includes four dedicated supply pins enabling the operation of output ports from different power supply domains. This provides the ability to clock devices switching at different LVCMOS levels without the need for external logic level translation circuitry.

The CDCUN1208LP is a 2:8 fan-out buffer featuring a wide operating supply range, two universal differential/single-ended inputs, and universal outputs (HCSL, LVDS, or LVCMOS) with edge-rate control. The clock buffer supports PCIe Gen1, Gen2 and Gen3. One of the device inputs includes a divider that provides divide values of /1, /2, /4, or /8. The CDCUN1208LP is offered in a 32-pin QFN package, reducing the solution footprint. The device is flexible and easy to use. The state of certain pins determines device configuration at power up. Alternately, the CDCUN1208LP provides a SPI/I2C port with which a host processor controls device settings. The CDCUN1208LP delivers excellent additive jitter performance, and low power consumption. The output section includes four dedicated supply pins enabling the operation of output ports from different power supply domains. This provides the ability to clock devices switching at different LVCMOS levels without the need for external logic level translation circuitry.

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* Data sheet CDCUN1208LP 400-MHz Low Power 2:8 Fan-Out Buffer With Universal Inputs and Outputs datasheet (Rev. D) PDF | HTML 18 Apr 2019
EVM User's guide CDCUN1208LP EVM User's Guide 04 Apr 2012

Design & development

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Evaluation board

CDCUN1208LPEVM — CDCUN1208LP Evaluation Module

The CDCUN1208LP is a 2:8 fan-out buffer featuring a wide operating supply range, two universal differential/ single ended inputs, and universal outputs (HCSL, LVDS, or LVCMOS) with clock edge rate control. One of the device inputs includes a divider that provides divide values of /1, /2, /4, and (...)

User guide: PDF
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GUI for evaluation module (EVM)

SCAC133 — CDCUN1208LP EVM Control GUI

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Supported products & hardware

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Clock buffers
CDCUN1208LP — Ultra-low power, 2:8 fan-out buffer with universal inputs and outputs
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CDCUN1208LP IBIS Model

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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 (...)
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VQFN (RHB) 32 Ultra Librarian
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