M74HC377

2/11

INPUT AND OUTPUT EQUIVALENT CIRCUIT

PIN DESCRIPTION

TRUTH TABLE

X : Don’t Care

LOGIC DIAGRAM

This logic diagram has not be used to estimate propagation delays

PIN No

SYMBOL

NAME AND FUNCTION

1

G

Data Enable Input (Active

LOW)

2, 5, 6, 9, 12,

15, 16, 19

1Q to 8Q

Flip Flop Outputs

3, 4, 7, 8, 13,

14, 17, 18

1D to 8D

Data Inputs

11

CLOCK

Clock Input (LOW to

HIGH, Edge Triggered)

10

GND

Ground (0V)

20

Vcc

Positive Supply Voltage

INPUTS

OUTPUTS

G

CLOCK

DATA

Q

H

X

X

NO CHANGE

LL

L

LH

H

X

X

NO CHANGE