SN74ACT244Q1

OCTAL BUFFER/DRIVER

WITH 3STATE OUTPUTS

SCAS766B − APRIL 2004 − REVISED JANUARY 2008

1

POST OFFICE BOX 655303

description/ordering information

This octal buffer/driver is designed specifically to

improve the performance and density of 3-state

memory

address

drivers,

clock

drivers,

and

bus-oriented receivers and transmitters.

The SN74ACT244 device is 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.

resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver.

TA

PACKAGE‡

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

−40

°C to 85°C

TSSOP − PW

Tape and reel

SN74ACT244IPWRQ1

ACT244I

† For the most current package and ordering information, see the Package Option Addendum at the end of this

document, or see the TI web site at www.ti.com.

‡ Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

FUNCTION TABLE

(each buffer)

INPUTS

OUTPUT

OE

A

OUTPUT

Y

L

H

H

L

LL

H

X

Z

Copyright

 2008, 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.

PW 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