SN54AS823A, SN74AS823A, SN74AS824A

9-BIT BUS-INTERFACE FLIP-FLOPS

WITH 3-STATE OUTPUTS

SDAS231A – JUNE 1984 – REVISED AUGUST 1995

2

POST OFFICE BOX 655303

Function Tables

SN54AS823A, SN74AS823A

(each flip-flop)

INPUTS

OUTPUT

OE

CLR

CLKEN

CLK

D

Q

L

L

X

X

X

L

L

HL

↑

HH

L

HL

↑

LL

L

HH

X

X

Q0

H

X

X

X

X

Z

SN74AS824A

(each flip-flop)

INPUTS

OUTPUT

OE

CLR

CLKEN

CLK

D

Q

L

L

X

X

X

L

L

HL

↑

HL

L

HL

↑

LH

L

HH

X

X

Q0

H

X

X

X

X

Z

EN

1

7

6D

8

7D

9

8D

10

9D

2D

2

1D

6Q

18

7Q

17

8Q

16

9Q

15

1Q

23

3

2D

4

3D

5

4D

6

5D

2Q

22

3Q

21

4Q

20

5Q

19

OE

13

CLK

1C2

R

11

CLR

G1

14

CLKEN

EN

1

7

8

9

10

2D

2

6Q

18

7Q

17

8Q

16

9Q

15

1Q

23

3

4

5

6

2Q

22

3Q

21

4Q

20

5Q

19

OE

13

CLK

1C2

R

11

CLR

G1

14

CLKEN

1D

2D

3D

4D

5D

6D

7D

8D

9D

SN54AS823A, SN74AS823A

SN74AS824A

† These symbols are in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12.

Pin numbers shown are for the DW, JT, and NT packages.