74VHC574M 데이터 시트보기 (PDF) - STMicroelectronics

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74VHC574M

OCTAL D-TYPE FLIP FLOP WITH 3 STATE OUTPUT NON INVERTING

STMicroelectronics 

74VHC574

INPUT EQUIVALENT CIRCUIT

TRUTH TABLE

OE

H

L

L

L

X:Don’t Care

Z: High Impedance

LOGIC DIAGRAM

INPUTS

CK

X

PIN DESCRIPTION

PIN No

1

2, 3, 4,

5, 6, 7,

8, 9

12, 13, 14,

15, 16, 17,

18, 19

11

10

20

S Y M B OL

OE

D0 to D7

NAME AND FUNCTION

3 State Output Enable

Input (Active LOW)

Data Inputs

Q0 to Q7 3 State Outputs

CLOCK

GND

VCC

Clock Input (LOW to

HIGH, edge triggered)

Ground (0V)

Positive Supply Voltage

OUT PUTS

D

Q

X

Z

X

NO CHANGE

L

L

H

H

2/10

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