SN54ACT244, SN74ACT244

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCAS517B – JUNE 1995 – REVISED MAY 1996

1

POST OFFICE BOX 655303

CMOS) 1-

µm Process

Small-Outline (DW), Shrink Small-Outline

(DB), Thin Shrink Small-Outline (PW), and

Flat (W) Packages, Ceramic Chip Carriers

(FK), and Plastic (N) and Ceramic (J) DIPs

description

These

octal

buffers/drivers

are

designed

specifically to improve the performance and

density of 3-state memory address drivers, clock

drivers,

and

bus-oriented

receivers

and

transmitters.

The ’ACT244 are organized as two 4-bit

buffers/drivers with separate output-enable (OE)

inputs. When OE is low, the device passes

noninverted data from the A inputs to the Y

outputs. When OE is high, the outputs are in the

high-impedance state.

The SN54ACT244 is characterized for operation

over the full military temperature range of –55

°C

to 125

°C. The SN74ACT244 is characterized for

operation from –40

°C to 85°C.

FUNCTION TABLE

(each buffer)

INPUTS

OUTPUT

OE

A

Y

L

H

H

L

LL

H

X

Z

Copyright

© 1996, Texas Instruments Incorporated

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.

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 is a trademark of Texas Instruments Incorporated.

SN54ACT244 ...J OR W PACKAGE

SN74ACT244 . . . DB, DW, N, OR PW PACKAGE

(TOP VIEW)

3

2

1 20 19

9 10 11 12 13

4

5

6

7

8

18

17

16

15

14

1Y1

2A4

1Y2

2A3

1Y3

1A2

2Y3

1A3

2Y2

1A4

SN54ACT244 . . . FK PACKAGE

(TOP VIEW)

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