SN54ALS244C, SN54AS244A, SN74ALS244C, SN74AS244A

OCTAL BUFFERS AND LINE DRIVERS

WITH 3-STATE OUTPUTS

SDAS142C – JULY 1987 – REVISED AUGUST 1995

Copyright

1

POST OFFICE BOX 655303

Memory Address Registers

Small-Outline (DW) Packages, Ceramic

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

and Ceramic (J) 300-mil DIPs

description

These octal buffers and line drivers are designed

specifically to improve the performance and

density of 3-state memory address drivers, clock

drivers,

and

bus-oriented

receivers

and

transmitters. With the

′ALS240A, ′ALS241C,

′AS240A, and ′AS241A, these devices provide the

choice of selected combinations of inverting

outputs, symmetrical active-low output-enable

(OE) inputs, and complementary OE and OE

inputs.

The -1 version of SN74ALS244C is identical to the

standard version, except that the recommended

no -1 version of the SN54ALS244C.

The

SN54ALS244C

and

SN54AS244A

are

characterized for operation over the full military

temperature range of – 55

°C to 125°C. The

SN74ALS244C

and

SN74AS244A

are

characterized for operation from 0

°C to 70°C.

FUNCTION TABLE

(each buffer)

INPUTS

OUTPUT

OE

A

Y

L

H

H

L

LL

H

X

Z

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

1OE

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

GND

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

2A1

SN54ALS244C, SN54AS244A ...J PACKAGE

SN74ALS244C, SN74AS244A . . . DW OR N PACKAGE

(TOP VIEW)

3

2

1 20 19

910 11 12 13

4

5

6

7

8

18

17

16

15

14

1Y1

2A4

1Y2

2A3

1Y3

1A2

2Y3

1A3

2Y2

1A4

SN54ALS244C, SN54AS244A . . . 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.