PCK2022RA

NOTES:
1. Stresses beyond those listed may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
2. The input and output voltage ratings may be exceeded if the input and output current ratings are observed.

This part replaces PCK2022R with improved frequency and spread pectrum performance.

The PCK2022RA is a clock synthesizer/driver for a Pentium III and ther similar processors.

The PCK2022RA has eight differential pair CPU current sourceoutputs, one 33/66 MHz output which is configurable on power-up,two 48 MHz clocks which can be disabled on power-up, and one3.3 V reference clock at 14.318 MHz which can also be disabled onpower-up. All clock outputs meet Intel's drive strength, rise/fall times,jitter, accuracy, and skew requirements.

The part possesses a dedicated power-down input pin for powermanagement control. This input of PCK2022RA is synchronized on chip, andensures glitch-free output transitions. In addition, the part can beconfigured to disable the 48 MHz outputs for lower power operationand an increase in the performance of the functioning outputs. TheIOCLK and REFCLK of PCK2022RA can also be disabled for the highestperformance of the Host outputs.