This product is a low cost 20-pin frequency generator with low power consumption and high reliability.
The AV9155 frequency generator from Integrated Circuit Systems, Inc. provides CPU, 2XCPU, and peripheral clocks for 286, 386 and 486 desktop and notebook motherboards. It uses a 14.318 MHz crystal reference and offers smooth, glitch‑free frequency transitions that meet Intel 486 timing specifications.
The device is supplied in a 20‑pin DIP or SOIC package, supports 3.3 V or 5 V operation, and includes internal loop‑filter components. Key features include up to 100 MHz output, skew‑controlled dual clocks, power‑down option, and output‑enable tristate control.
| Maximum operating temperature | 0 °C to +70 °C |
|---|---|
| Supply voltage | 3.3 V or 5.0 V |
| Maximum output frequency | Up to 100 MHz at 5 V or 3.3 V |
| Clock skew (CPU vs 2XCPU) | 0.5 ns to 1 ns |
| Power dissipation | 0.5 W |
The AV9155 is designed to accept a 14.318 MHz crystal as the input reference.
The device is available in a 20‑pin DIP or SOIC package.
Pin 12 PD# is the power‑down input; pulling it low shuts off the entire chip.
It can generate clock frequencies up to 100 MHz when powered at 5 V (or 3.3 V).