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TG

C

C

TG

C

C

TG

C

C

C

TG

C

C

PRE

CLK

D

CLR

Q

Q

C

7

2

6

5

3

1

SN74LVC2G74

SINGLE POSITIVE-EDGE-TRIGGERED D-TYPE FLIP-FLOP

WITH CLEAR AND PRESET

SCES203M – APRIL 1999 – REVISED FEBRUARY 2007

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

H

↑

H

H

L

H

H

↑

L

L

H

H

H

L

X

(1)

This configuration is nonstable; that is, it does not persist when PRE or CLR returns to its inactive

(high) level.

LOGIC DIAGRAM (POSITIVE LOGIC)

2

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