SN54LVT244, SN74LVT244

3.3-V ABT OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCBS135B – AUGUST 1992 – REVISED MARCH 1994

Copyright

2–1

POST OFFICE BOX 655303

Technology (ABT) Design for 3.3-V

Operation and Low Static Power

Dissipation

Down to 2.7 V

MIL-STD-883C, Method 3015; Exceeds

200 V Using Machine Model (C = 200 pF,

R = 0)

Per JEDEC Standard JESD-17

for External Pullup Resistors

Small-Outline (DW), Shrink Small-Outline

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

Packages, Ceramic Chip Carriers (FK),

Ceramic Flatpacks (W), and Ceramic

DIPS (J)

description

capability to provide a TTL interface to a 5-V system environment.

The ’LVT244 is organized as two 4-bit 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.

Active bus-hold circuitry is provided to hold unused or floating data inputs at a valid logic level.

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

The SN74LVT244 is packaged in TI’s shrink small-outline package (DB), which provides the same I/O pin count

and functionality of standard small-outline packages in less than half the printed-circuit-board area.

The SN54LVT244 is characterized for operation over the full military temperature range of – 55

°C to 125°C. The

SN74LVT244 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

LVT244–5

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

SN54LVT244 ...J OR W PACKAGE

SN74LVT244 . . . DB, DW, 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

SN54LVT244 . . . 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.