SN54AHCT574, SN74AHCT574

OCTAL EDGE-TRIGGERED D-TYPE FLIP-FLOPS

WITH 3-STATE OUTPUTS

SCLS245J – OCTOBER 1995 – REVISED JANUARY 2000

2

POST OFFICE BOX 655303

FUNCTION TABLE

(each flip-flop)

INPUTS

OUTPUT

OE

CLK

D

Q

L

↑

H

H

L

↑

LL

L

H or L

X

Q0

H

X

X

Z

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

OE

1D

2

1D

3

2D

4

3D

5

4D

6

5D

11

CLK

1Q

19

2Q

18

3Q

17

4Q

16

5Q

15

6Q

14

7Q

13

8Q

12

7

6D

8

7D

9

8D

EN

1

C1

logic diagram (positive logic)

OE

CLK

1D

1Q

To Seven Other Channels

C1

1

11

2

19

1D