SN54BCT245, SN74BCT245

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS013F – SEPTEMBER 1988 – REVISED APRIL 1994

Copyright

2–1

POST OFFICE BOX 655303

Per MIL-STD-883C, Method 3015

Memory Address Registers

Small-Outline (DW) and Shrink

Small-Outline (DB) Packages, Ceramic Chip

Carriers (FK) and Flatpacks (W), and

Standard Plastic and Ceramic 300-mil DIPs

(J, N)

description

These octal bus transceivers are designed for

asynchronous

communication

between

data

buses. The devices transmit 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 output-enable (OE) input can be

used to disable the device so the buses are

effectively isolated.

The SN74BCT245 is available in TI’s shrink

small-outline package (DB), which provides the

same I/O pin count and functionality of standard

small-outline packages in less than half the

printed-circuit-board area.

The SN54BCT245 is characterized for operation

over the full military temperature range of – 55

°C

to 125

°C. The SN74BCT245 is characterized for

operation from 0

°C to 70°C.

FUNCTION TABLE

INPUTS

OPERATION

OE

DIR

OPERATION

L

L

B data to A bus

L

H

A data to B bus

H

X

Isolation

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

SN54BCT245 ...J OR W PACKAGE

SN74BCT245 . . . DB, DW, OR N PACKAGE

(TOP VIEW)

32

1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

B1

B2

B3

B4

B5

A3

A4

A5

A6

A7

SN54BCT245 . . . FK PACKAGE

(TOP VIEW)

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.