SN54F245, SN74F245

OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SDFS010A – MARCH 1987 – REVISED OCTOBER 1993

Copyright

2–1

POST OFFICE BOX 655303

Small-Outline (SOIC) and Shrink

Small-Outline (SSOP) Packages, Ceramic

Chip Carriers, and Plastic and Ceramic

DIPs

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

logic

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 SN74F245 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 SN54F245 is characterized for operation over

the full military temperature range of – 55

°C to

125

°C. The SN74F245 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

SN54F245 ...J PACKAGE

SN74F245 . . . DB, DW, OR N PACKAGE

(TOP VIEW)

32

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

SN54F245 . . . 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.