General description

The 74F656A is an octal buffer and line driver with parity generation/checking. The 74F656A can be used as memory address driver, clock driver and bus-oriented transmitter/receiver. The inclusion of parity generation/checking improves PCB density.

Features

■ Combines 74F244 and 74F280A functions in one device

■ High impedance NPN base inputs for reduced input current (40 μA in HIGH and LOW states)

■ IIL = 20 μA compared to 600 μA in FAST family specification

■ For applications with high output drive and light bus loading

■ Non-inverting

■ 3-state output sink capability IOL = 64 mA and source IOH = 15 mA

■ Inputs and outputs on separate sides simplifies board layout

■ Combined functions reduce part count and enhance system performance

■ Industrial temperature range available (−40 °C to +85 °C)