M74HC688 Просмотр технического описания (PDF) - STMicroelectronics

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Компоненты Описание

производитель

M74HC688

8 BIT EQUALITY COMPARATOR

STMicroelectronics 

M74HC688

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

PIN No

1

2, 4, 6, 8, 11,

13, 15, 17

3, 5, 7, 9, 12,

14, 16, 18

19

10

20

SYMBOL

G

P0 to P7

NAME AND FUNCTION

Enable Input (Active

LOW)

Word Inputs

Q0 to Q7 Word Outputs

P=Q

GND

VCC

Equal to Output

Ground (0V)

Positive Supply Voltage

TRUTH TABLE

INPUTS

P, Q

G

P=Q

L

P <> Q

L

X

H

X: Don’t Care

LOGIC DIAGRAM

OUTPUT

P=Q

L

H

H

This logic diagram has not be used to estimate propagation delays

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