SN54AHCT244, SN74AHCT244

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCLS228L – OCTOBER 1995 – REVISED JULY 2003

1

POST OFFICE BOX 655303

JESD 17

description/ordering information

These

octal

buffers/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.

The ’AHCT244 devices are organized as two 4-bit

buffers/line drivers with separate output-enable

(OE) inputs. When OE is low, the device passes

data from the A inputs to the Y outputs. When OE

is high, the outputs are in the high-impedance

state.

To ensure the high-impedance state during power

through a pullup resistor; the minimum value of

the resistor is determined by the current-sinking

capability of the driver.

ORDERING INFORMATION

TA

PACKAGE†

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

PDIP – N

Tube

SN74AHCT244N

SN74AHCT244N

SOIC

DW

Tube

SN74AHCT244DW

AHCT244

SOIC – DW

Tape and reel

SN74AHCT244DWR

AHCT244

40

°Cto85°C

SOP – NS

Tape and reel

SN74AHCT244NSR

AHCT244

–40

°C to 85°C

SSOP – DB

Tape and reel

SN74AHCT244DBR

HB244

TSSOP

PW

Tube

SN74AHCT244PW

HB244

TSSOP – PW

Tape and reel

SN74AHCT244PWR

HB244

TVSOP – DGV

Tape and reel

SN74AHCT244DGVR

HB244

CDIP – J

Tube

SNJ54AHCT244J

SNJ54AHCT244J

–55

°C to 125°C

CFP – W

Tube

SNJ54AHCT244W

SNJ54AHCT244W

LCCC – FK

Tube

SNJ54AHCT244FK

SNJ54AHCT244FK

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines

are available at www.ti.com/sc/package.

Copyright

 2003, 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.

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

SN54AHCT244 ...J OR W PACKAGE

SN74AHCT244 . . . DB, DGV, DW, N, NS, OR PW PACKAGE

(TOP VIEW)

32 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

SN54AHCT244 . . . FK PACKAGE

(TOP VIEW)

On products compliant to MIL-PRF-38535, all parameters are tested

unless otherwise noted. On all other products, production

processing does not necessarily include testing of all parameters.