AV9154A-39CS16

Integrated Circuit Systems, Inc. AV9154A-39 Preliminary Product Preview Low Cost 16-Pin Frequency Generator The ICS9154A-39 is a 0.8mm technology low-cost frequency generator designed for general purpose PC and disk drive applications. However, because the ICS9154A-39 uses 0.8mm technology and the latest phase-locked loop architecture, it offers significant performance advantages that enable the device to be used in high performance systems when clock jitter is a key design issue. The ICS9154A-39 guarantees a 45/55 duty cycle over all frequencies. In addition, a worst case jitter of ±250ps is achieved. The CPU clock offers the unique feature of smooth, glitchfree transitions from one frequency to the next, making this the ideal device to use whenever slowing the cpu speed. The ICS9154A-39 makes a gradual transition between frequencies. General Description • • • • • Features All loop filter components internal 5V operation 16-pin 150-mil SOIC Power-down control of CPU clock and Fixed Clock when PD# goes low Output enable control of all output pins Pin Configuration Block Diagram 16-Pin SOIC 9154-39 Rev B 09/18/97 PRODUCT PREVIEW documents contain information on new products in the sampling or preproduction phase of development. Characteristic data and other specifications are subject to change without notice. AV9154A-39 Preliminary Product Preview Pin Descriptions PIN NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PIN NAME 8.33 MHz X2 X1 VDD GND 100 MHz 10 MHz AGND ...