1-Line To 18-Line Clock Driver With I2C Control Interface

The CDC318A is a high-performance Clock Buffer designed to distribute high-speed Clocks in PC applications. This device distributes one input (A) to 18 outputs (Y) with minimum skew for Clock Distribution The CDC318A operates from a 3.3-V power supply. It is characterized for operation from 0C to 70C.
This device has been designed with consideration for optimized EMI performance. Depending on the application layout, damping resistors in series to the Clock outputs (like proposed in the PC100 specification) may not be needed in most cases.
The device provides a standard mode (100K-bits/s) I2C serial Interface for device control. The implementation is as a slave/receiver. The device address is specified in the I2C device address table. Both of the I2C inputs (SDATA and SCLOCK) are 5-V tolerant and provide integrated pullup resistors (typically 140 k).
Three 8-bit I2C Registers provide individual enable control for each of the outputs. All outputs default to enabled at powerup. Each output CAN be placed in a disabled mode with a low-level output when a low-level control bit is written to the control Register The Registers are write only and must be accessed in sequential order (i.e., random access of the Registers is not supported).
The CDC318A provides 3-state outputs for testing and debugging purposes. The outputs CAN be placed in a high-impedance state via the output-enable (OE) input. When OE is high, all outputs are in the operational state. When OE is low, the outputs are placed in a high-impedance state. OE provides an integrated pullup resistor.
By Texas Instruments
Part Manufacturer Description Datasheet Samples
CDC318ADLG4 Texas Instruments 1-Line To 18-Line Clock Driver With I2C Control Interface 48-SSOP
CDC318ADLR Texas Instruments 1-Line To 18-Line Clock Driver With I2C Control Interface 48-SSOP
CDC318ADLRG4 Texas Instruments 1-Line To 18-Line Clock Driver With I2C Control Interface 48-SSOP
CDC318ADL Texas Instruments 1-Line To 18-Line Clock Driver With I2C Control Interface 48-SSOP
CDC318A 's PackagesCDC318A 's pdf datasheet
CDC318ADL SSOP
CDC318ADLG4 SSOP
CDC318ADLR SSOP
CDC318ADLRG4 SSOP

CDC318A pdf datasheet download


CDC318A Pinout, Pinouts
CDC318A pinout,Pin out
This is one package pinout of CDC318A,If you need more pinouts please download CDC318A's pdf datasheet.

CDC318A Application circuits
CDC318A circuits
This is one application circuit of CDC318A,If you need more circuits,please download CDC318A's pdf datasheet.


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