74HC688 8-bit Comparator

Name: 74HC688 8-bit Comparator
Brand: Texas Instruments

SN74HC688

Texas Instrumentsic logic

The 74HC688 is an 8-bit comparator IC used for comparing two 8-bit binary or BCD words.

Manufacturer datasheet

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Specifications

Operating Voltage: 2 V to 6 V
Supply Current: 80-μA max
Package: SOIC, PDIP, TSSOP, CDIP, LCCC
Temperature Range: -55 to 125 °C

Pinout

Low source legibility.The original manufacturer datasheet for this part was difficult to read, so this pinout may be incomplete or imperfect. Always confirm against the specific manufacturer’s datasheet before wiring.

Pin	Name	Functions	Notes
1	P0.0	GPIO	Input A bit 0
2	P0.1	GPIO	Input A bit 1
3	P0.2	GPIO	Input A bit 2
4	P0.3	GPIO	Input A bit 3
5	P0.4	GPIO	Input A bit 4
6	P0.5	GPIO	Input A bit 5
7	P0.6	GPIO	Input A bit 6
8	P0.7	GPIO	Input A bit 7
9	P1.0	GPIO	Input B bit 0
10	P1.1	GPIO	Input B bit 1
11	P1.2	GPIO	Input B bit 2
12	P1.3	GPIO	Input B bit 3
13	P1.4	GPIO	Input B bit 4
14	P1.5	GPIO	Input B bit 5
15	P1.6	GPIO	Input B bit 6
16	P1.7	GPIO	Input B bit 7
17	OE	GPIO	Output enable input, forces output to high level when active low
18	VCC	POWER	Supply voltage
19	GND	GND	Ground
20	VCC	POWER	Supply voltage (redundant)

Interactive pinout

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SN74HC688

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