SN54BCT25244, SN74BCT25244

25-

Ω OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCBS064A – JUNE 1990 – REVISED NOVEMBER 1993

Copyright

2–1

POST OFFICE BOX 655303

MIL-STD-883C, Method 3015; Exceeds

200 V Using Machine Model (C = 200 pF,

R = 0)

Switching for Line Impedances of 25

Ω

or Greater

Noise Generated by the Simultaneous

Switching of Outputs

Small-Outline (DW) Packages, Ceramic

Chip Carriers (FK) and Flatpacks (W), and

Standard Plastic and Ceramic 300-mil DIPs

(JT, NT)

description

These 25-

Ω octal buffers and line drivers are

designed

specifically

to

improve

both

the

performance and density of 3-state memory

address drivers, clock drivers, and bus-oriented

receivers and transmitters.

which facilitates switching 25-

Ω transmission

and GND pins minimize switching noise for more

reliable system operation.

When the output-enable (1OE and 2OE) inputs

are low, the device transmits data from the

A inputs to the Y outputs. When 1OE and 2OE are

high, the outputs are in the high-impedance state.

The

SN54BCT25244

is

characterized

for

operation over the full military temperature range

of – 55

°C to 125°C. The SN74BCT25244 is

characterized for operation from 0

°C to 70°C.

FUNCTION TABLE

(each buffer/driver)

INPUTS

OUTPUT

OE

A

Y

L

H

H

L

LL

H

X

Z

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

1Y1

GND

1Y2

1Y3

GND

1Y4

2Y1

GND

2Y2

2Y3

GND

2Y4

1OE

1A1

1A2

1A3

1A4

2A1

2A2

2A3

2A4

2OE

SN54BCT25244 . . . JT OR W PACKAGE

SN74BCT25244 . . . 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

2OE

2Y4

GND

NC

2Y3

2Y2

GND

1A3

1A2

NC

1A1

1OE

1Y1

426

14 15 16 17 18

SN54BCT25244 . . . FK PACKAGE

(TOP VIEW)

NC – No internal connection

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.