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1

2

18

1Y1

1OE

1A1

4

16

1Y2

1A2

6

14

1Y3

1A3

8

12

1Y4

1A4

19

11

9

2Y1

2OE

2A1

13

7

2Y2

2A2

15

5

2Y3

2A3

17

3

2Y4

2A4

Pin numbers shown are for the DB, DGV, DW, N, NS, PW, and RGY packages.

Absolute Maximum Ratings

(1)

SN74LVC244A

OCTAL BUFFER/DRIVER

WITH 3-STATE OUTPUTS

SCAS414X – NOVEMBER 1992 – REVISED MARCH 2005

LOGIC DIAGRAM (POSITIVE LOGIC)

over operating free-air temperature range (unless otherwise noted)

MIN

MAX

UNIT

Supply voltage range

–0.5

6.5

V

–0.5

6.5

V

–0.5

6.5

V

–0.5

V

Input clamp current

–50

mA

Output clamp current

–50

mA

Continuous output current

±50

mA

±100

mA

70

92

58

78

θ

JA

Package thermal impedance

°C/W

69

60

83

37

Storage temperature range

–65

150

°C

Power dissipation

500

mW

(1)

Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings

only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating

conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2)

The input and output negative-voltage ratings may be exceeded if the input and output current ratings are observed.

(3)

(4)

The package thermal impedance is calculated in accordance with JESD 51-7.

(5)

The package thermal impedance is calculated in accordance with JESD 51-5.

(6)

(7)

3