HD74LV2G74A

Rev.5.00 Apr 07, 2006 page 2 of 8

Function Table

Inputs

Outputs

PRE

CLR

CLK

D

Q

Q

L

H

X

X

H

L

H

L

X

X

L

H

L

L

X

X

H

*1

H

*1

H

H

↑

H

H

L

H

H

↑

L

L

H

H

H

↓

X

Q

0

H : High level

L : Low level

X : Immaterial

↑ : Low to high transition

↓ : High to low transition

Note : 1. Q and

Q will remain high as long as preset and clear are low, but Q and Q are unpredictable, if preset and

clear go high simultaneously.

Pin Arrangement

(Top view)

1

7

PRE

6

CLR

5Q

CLK

2

D

3

Q

4

GND