54AC16620, 74AC16620

16-BIT BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCAS239A – JULY 1990 – REVISED APRIL 1996

2

POST OFFICE BOX 655303

FUNCTION TABLE

(each 8-bit section)

INPUTS

OPERATION

OEBA

OEAB

OPERATION

L

L

B data to A bus

L

H

B data to A bus,

A data to B bus

H

L

Isolation

H

H

A data to B bus

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

2OEBA

1OEBA

EN1

48

EN2

1

1OEAB

1A2

46

1A3

44

1A4

43

1A5

41

1A6

40

1A7

38

1A8

37

1A1

47

1B1

2

1B2

3

1B3

5

1B4

6

1B5

8

1B6

9

1B7

11

1B8

12

EN3

25

EN4

24

2OEAB

1

1

1

2

2A2

35

2A3

33

2A4

32

2A5

30

2A6

29

2A7

27

2A8

26

2A1

36

2B1

13

2B2

14

2B3

16

2B4

17

2B5

19

2B6

20

2B7

22

2B8

23

1

1

3

4