General Description

The 74F779 is a fully synchronous 8-stage up/down counter with multiplexed 3-STATE I/O ports for bus-oriented applications. All control functions (hold, count up, count down, synchronous load) are controlled by two mode pins (S0, S1). The device also features carry lookahead for easy cascading. All state changes are initiated by the rising edge of the clock.

Features

■ Multiplexed 3-STATE I/O ports

■ Built-in lookahead carry capability

■ Count frequency 100 MHz typ

■ Supply current 80 mA typ

■ Available in SOIC (300 mil only)