SN54AC245, SN74AC245

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCAS461D – FEBRUARY 1995 – REVISED DECEMBER 1996

1

POST OFFICE BOX 655303

CMOS) 1-

mm Process

Small-Outline (DW), Shrink Small-Outline

(DB), and Thin Shrink Small-Outline (PW)

Packages, Ceramic Chip Carriers (FK), and

Flatpacks (W), and Standard Plastic (N) and

Ceramic (J) DIPs

description

The ’AC245 octal bus transceivers are designed

for

asynchronous

two-way

communication

between

data

buses.

The

control-function

implementation

minimizes

external

timing

requirements.

When the output-enable (OE) is low, the device

passes noninverted data from the A bus to the B

bus or from the B bus to the A bus, depending on

the logic level at the direction control (DIR) input.

are effectively isolated.

The SN54AC245 is characterized for operation

over the full military temperature range of – 55

°C

to 125

°C. The SN74AC245 is characterized for

operation from – 40

°C to 85°C.

FUNCTION TABLE

INPUTS

OPERATION

OE

DIR

OPERATION

L

L

H

L

H

X

B data to A bus

A data to B bus

Isolation

Copyright

© 1996, 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.

EPIC is a trademark of Texas Instruments Incorporated.

SN54AC245 ...J OR W PACKAGE

SN74AC245 . . . DB, DW, N, OR PW PACKAGE

(TOP VIEW)

3

2

1 20 19

9 10 11 12 13

4

5

6

7

8

18

17

16

15

14

B1

B2

B3

B4

B5

A3

A4

A5

A6

A7

SN54AC245 . . . FK PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

DIR

A1

A2

A3

A4

A5

A6

A7

A8

GND

OE

B1

B2

B3

B4

B5

B6

B7

B8

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