Clock Buffer/Clock Multiplier 8-Pin TSSOP Tube

The CDCS503 is a spread spectrum capable, LVCMOS Input Clock Buffer with selectable frequency multiplication. It shares major functionality with the CDCS502 but utilizes a LVCMOS input stage instead of the crystal input stage of the CDCS502. Also an Output Enable pin has been added to the CDCS503. The device accepts a 3.3V LVCMOS signal at the input. The input signal is processed by a PLL, whose output frequency is either equal to the input frequency or multiplied by the factor of 4. The PLL is also able to spread the clock signal by ±0%, ±0.5%, ±1% or ±2% centered around the output clock frequency with a triangular modulation. By this, the device can generate output frequencies between 8MHz and 108MHz with or without SSC. A separate control pin can be used to enable or disable the output. The CDCS503 operates in 3.3V environment. It is characterized for operation from –40°C to 85°C, and available in an 8-pin TSSOP package.

Part of a Family of Easy to use Clock Generator Devices
With Optional SSC

Clock Multiplier With Selectable Output Frequency and
Selectable SSC

SSC Controllable via 2 External Pins

• ±0%, ±0.5%, ±1%, ±2% Center Spread

Frequency Multiplication Selectable Between x1 or x4
With One External Control Pin

Output Disable via Control Pin

Single 3.3V Device Power Supply

Wide Temperature Range –40°C to 85°C

Low Space Consumption by 8 Pin TSSOP Package

APPLICATIONS

• Consumer and Industrial Applications requiring
  EMI reduction through Spread Spectrum Clocking
  and/or Clock Multiplication