DESCRIPTION

The 74F655A and 74F656A are octal buffers and line drivers with parity generation/checking designed to be employed as memory address drivers, clock drivers and bus-oriented transmitters/receivers. These parts include parity generator/checker to improve PC board density.

FEATURES

? Significantly improved AC performance over 74F655 and 74F656

? High impedance NPN base input for reduced loading (40μA in High and Low states)

? Ideal in applications where high output drive and light bus loading are required

(IIL is 40μA vs. FAST std of 600μA)

? 74F655A combines 74F240 and 74F280A functions in one package

? 74F656A combines 74F244 and 74F280A functions in one package

? 74F655A Inverting

? 74F656A Non-inverting

? 3-State outputs sink 64mA and source 15mA

? 24-pin plastic Slim DIP (300mil) package

? Inputs on one side and outputs on the other side simplifies PC board layout

? Combined functions reduce part count and enhance system performance

? Industrial temperature range available (–40°C to +85°C)