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SN54LVCH244A . . . J OR W PACKAGE

SN74LVCH244A . . . DB, DBQ, DGV, DW,

NS, OR PW PACKAGE

(TOP VIEW)

SN54LVCH244A . . . 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

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

SN74LVCH244A . . . RGY PACKAGE

(TOP VIEW)

1

20

10

11

2

3

4

5

6

7

8

9

19

18

17

16

15

14

13

12

2OE

1Y1

2A4

1Y2

2A3

1Y3

2A2

1Y4

1A1

2Y4

1A2

2Y3

1A3

2Y2

1A4

2Y1

DESCRIPTION/ORDERING INFORMATION

SN54LVCH244A

,, SN74LVCH244A

OCTAL BUFFERS/DRIVERS

WITH 3-STATE OUTPUTS

SCES009O – JULY 1995 – REVISED FEBRUARY 2007

• Operate From 1.65 V to 3.6 V

• I

Operation

• Inputs Accept Voltages to 5.5 V

• Bus Hold on Data Inputs Eliminates the Need

• Max t

for External Pullup/Pulldown Resistors

• Typical V

• Latch-Up Performance Exceeds 250 mA Per

<0.8 V at V

JESD 17

• Typical V

• ESD Protection Exceeds JESD 22

>2 V at V

–

2000-V Human-Body Model (A114-A)

• Support Mixed-Mode Signal Operation on All

Ports

–

200-V Machine Model (A115-A)

(5-V Input/Output Voltage With 3.3-V V

–

1000-V Charged-Device Model (C101)

These devices are organized as two 4-bit line drivers with separate output-enable (OE) inputs. When OE is low,

these devices pass 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 holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown

resistors with the bus-hold circuitry is not recommended.

Inputs can be driven from either 3.3-V or 5-V devices. This feature allows the use of these devices as translators

in a mixed 3.3-V/5-V system environment.

outputs, preventing damaging current backflow through the devices when they are powered down.

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

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.

PRODUCTION DATA information is current as of publication date.

Copyright © 1995–2007, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.