CDCUN1208LP Texas instruments

CDCUN1208LP

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CDCUN1208LP

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Описание

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.

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)

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