HD74HC688 Datasheet 8-bit Magnitude Comparator

Manufacturer: Renesas

Overview: HD74HC688 8-bit Magnitude parator REJ03D0643–0200 (Previous ADE-205-529) Rev.2.

Datasheet Details

The HD74HC688 pares bit for bit two 8-bit words and indicates 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 parison of words greater than 8-bits.

High Speed Operation: tpd (P or Q to Output) = 17 ns typ (CL = 50 pF).
High Output Current: Fanout of 10 LSTTL Loads.
Wide Operating Voltage: VCC = 2 to 6 V.
Low Input Current: 1 µA max.
Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C).
Ordering Information Part Name Package Type Package Code (Previous Code) Package Abbreviation HD74HC688P DILP-20 pin (JEDEC) PRDP0020AC-B (DP-20NEV) P HD74H.

Brand Logo	Part Number	Description	Manufacturer
	HD74HC688	8-bit Magnitude Comparator	Hitachi Semiconductor

Part Number	Description
HD74HC680	12-bit Address Comparator
HD74HC682	8-bit Magnitude Comparator
HD74HC684	8-bit Magnitude Comparator
HD74HC620	Octal Bus Transceivers
HD74HC623	Octal Bus Transceivers
HD74HC640	Octal Bus Transceivers
HD74HC643	Octal Bus Transceivers
HD74HC668	Synchronous UP/Down Decade Counter
HD74HC669	Synchronous Up/Down 4-bit binary Counter
HD74HC670	4-by-4 Register File