AV9154A-60

Computer Motherboards: The AV9154A-60 replaces crystals and oscillators, saving board space, component cost, part count and inventory costs. It produces switchable CPU clock and up to four fixed clocks to drive floppy disk, communications, super I/O, bus and/or keyboard devices. The small package and 3.3V operation is perfect for handheld computers.

The AV9154A-60 is a low cost frequency generator designed for general purpose PC and disk drive applications. Its CPU clocks provide all necessary frequencies for 286, 386 and 486 systems, including support for the latest speeds of processors. The standard devices use a 14.318 MHz crystal to generate the CPU and peripheral clocks for integrated desktop and notebook motherboards.

The AV9154A-60 is specifically designed for use with OPTi core logic chip sets.

The AV9154A-60 can operate at 5.0V±10% or 3.3V±10%, but the CPU frequencies are limited (see the asterisks on the selection tables on page three) during 3.3V operation. The parts have two power-down pins. One shuts off the CPU clock to a low state when the power-down pin is taken high, and the other turns off the 14.318 MHz output in the same manner.