74ACT11643

OCTAL BUS TRANSCEIVER

WITH 3STATE OUTPUTS

SCAS051A − D2957, JULY 1987 − REVISED APRIL 1993

POST OFFICE BOX 655303

Copyright

1

High-Density 24-Pin Package

PCB Layout

Minimize High-Speed Switching Noise

CMOS) 1-

mm Process

125

°C

Outline Packages and Standard Plastic

300-mil DIPs

description

This octal bus transceiver is designed for asynchronous two-way communication between data buses. This

device transmits data from the A bus to the B bus or from the B bus to the A bus depending upon the level at

the direction control (DIR) input. The enable input G can be used to disable the device so the buses are

effectively isolated.

The 74ACT11643 is characterized for operation from − 40

°C to 85°C.

FUNCTION TABLE

CONTROL

INPUTS

OPERATION

G

DIR

OPERATION

L

L

H

L

H

X

B data to A bus

A data to B bus

Isolation

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

A1

A2

A3

A4

GND

GND

GND

GND

A5

A6

A7

A8

DIR

B1

B2

B3

B4

B5

B6

B7

B8

G

DW OR NT PACKAGE

(TOP VIEW)

EPIC is a trademark of Texas Instruments Incorporated.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.