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HD74HCT688 Datasheet 8-bit Magnitude Comparator

Manufacturer: Hitachi Semiconductor (now Renesas)

Overview: HD74HCT688 8-bit Magnitude Comparator.

General Description

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.

Key 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 Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Inputs Data P, Q P=Q P>Q P.

HD74HCT688 Distributor

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