SN74ACT2236

1024 × 9 × 2

ASYNCHRONOUS BIDIRECTIONAL FIRST IN, FIRST OUT MEMORY

SCAS149A − APRIL 1990 − REVISED SEPTEMBER 1995

2

POST OFFICE BOX 655303

POST OFFICE BOX 1443

26

UNCKA

LDCKA

A1

24

DEF B FLAG

20

EMPTYB

DEF A FLAG

21

EMPTYA

25

FULLA

18

17

LDCKA

UNCKA

RESET A

22

0

1

SBA

1

44

SAB

27

FULL B

UNCKB

19

LDCKB

28

23

RESET B

LDCKB

UNCKB

Φ

FIFO

1024

× 9 × 2

SN74ACT2236

A2

A3

A4

A5

A6

A7

B1

B2

B3

B4

B5

B6

B7

40

39

38

37

35

34

33

5

6

7

8

10

11

12

A8

13

B8

32

MODE

ALMOST-FULL/

15

AF/AEA

ALMOST-EMPTY A

AF/AEB

30

ALMOST-FULL/

ALMOST-EMPTY B

0

4

A0

B0

41

0

8

8

A Data

B Data

3EN1 [BA]

43

3EN2 [AB]

G3

2

DIR

2

1

HALF-FULL A

16

HFA

HFB

29

HALF-FULL B

RSTA

DAF

FILLA

EMPTYA

RSTB

DBF

FULLB

EMPTYB

OE

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