SN54ABTH25245, SN74ABTH25245

25-

Ω OCTAL BUS TRANSCEIVERS

WITH 3-STATE OUTPUTS

SCBS251F – JUNE 1992 – REVISED MAY 1997

1

POST OFFICE BOX 655303

Significantly Reduces Power Dissipation

MIL-STD-883, Method 3015; Exceeds 200 V

Using Machine Model (C = 200 pF, R = 0)

JEDEC Standard JESD-17

and Power Down

Switching for Line Impedances of 25

Ω or

Greater

Minimizes High-Speed Switching Noise

Need for External Pullup/Pulldown

Resistors

Small-Outline (DW) Package, Ceramic Chip

Carriers (FK), and Standard Plastic (NT)

and Ceramic (JT) DIPs

description

The ’ABTH25245 are 25-

Ω octal bus transceivers

designed

for

asynchronous

communication

between data buses. They improve both the

performance and density of 3-state memory

address drivers, clock drivers, and bus-oriented

transceivers.

These

devices

allow

noninverted

data

transmission 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.

The

output-enable (OE) input can disable the device

so that both buses are effectively isolated. When

OE is low, the device is active.

operation.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

Copyright

© 1997, Texas Instruments Incorporated

UNLESS OTHERWISE NOTED this document contains PRODUCTION

DATA information 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.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

EPIC-

ΙΙB is a trademark of Texas Instruments Incorporated.

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

GND

A2

A3

GND

A4

A5

GND

A6

A7

GND

A8

DIR

B1

B2

B3

B4

B5

B6

B7

B8

OE

SN54ABTH25245 . . . JT PACKAGE

SN74ABTH25245 . . . DW OR NT PACKAGE

(TOP VIEW)

32 1 28 27

12 13

5

6

7

8

9

10

11

25

24

23

22

21

20

19

OE

A8

GND

NC

A7

A6

GND

B3

B2

NC

B1

DIR

A1

426

14 15 16 17 18

SN54ABTH25245 . . . FK PACKAGE

(TOP VIEW)

NC – No internal connection