SN54ALS38B, SN74ALS38B

QUADRUPLE 2-INPUT POSITIVE-NAND BUFFERS

WITH OPEN-COLLECTOR OUTPUTS

SDAS196B – APRIL 1982 – REVISED DECEMBER 1994

Copyright

1

POST OFFICE BOX 655303

Small-Outline (D) Packages, Ceramic Chip

Carriers (FK), and Standard Plastic (N) and

Ceramic (J) 300-mil DIPs

description

These devices contain four independent 2-input

positive-NAND

buffers

with

open-collector

outputs. They perform the Boolean functions

Y = A

• B or Y = A + B in positive logic. The

open-collector outputs require pullup resistors to

perform

correctly.

These

outputs

may

be

connected to other open-collector outputs to

implement active-low wired-OR or active-high

wired-AND functions. Open-collector devices

The SN54ALS38B is characterized for operation

over the full military temperature range of – 55

°C

to 125

°C. The SN74ALS38B is characterized for

operation from 0

°C to 70°C.

FUNCTION TABLE

(each gate)

INPUTS

OUTPUT

A

B

Y

H

H

L

L

XH

X

L

H

logic diagram (positive logic)

1

1A

2

1B

4

2A

5

2B

9

3A

10

3B

12

4A

13

4B

1Y

3

2Y

6

3Y

8

4Y

11

&

1

1A

2

1B

4

2A

5

2B

9

3A

10

3B

12

4A

13

4B

1Y

3

2Y

6

3Y

8

4Y

11

† This symbol is in accordance with ANSI/IEEE Std 91-1984 and

IEC Publication 617-12.

Pin numbers shown are for the D, J, and N packages.

SN54ALS38B ...J PACKAGE

SN74ALS38B ...D OR N PACKAGE

(TOP VIEW)

1

2

3

4

5

6

7

14

13

12

11

10

9

8

1A

1B

1Y

2A

2B

2Y

GND

4B

4A

4Y

3B

3A

3Y

SN54ALS38B . . . FK PACKAGE

(TOP VIEW)

32

1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

4A

NC

4Y

NC

3B

1Y

NC

2A

NC

2B

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.