HD74HCT688 Datasheet (Hitachi Semiconductor)

HD74HCT688, 8-bit Magnitude Comparator

The HD74HCT688 compares bit for bit two 8-bit words and indicate whether or not they are equal.

The P=Q output indicates equality when it is low.

A single active low enable is provided to facilitate cascading of several packages and enable comparison of words greater than 8 bits.

This device is usef

HD74HCT688 Features

* LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility High Speed Operation: tpd (Data to P=Q) = 18 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 4.5 to 5.5 V Low Input