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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

ABSOLUTE MAXIMUM RATINGS

(1)

SN74ALVC244

OCTAL BUFFER/DRIVER

WITH 3-STATE OUTPUTS

SCES188G – FEBRUARY 1999 – REVISED OCTOBER 2004

FUNCTION TABLE

(each buffer)

INPUTS

OUTPUT

Y

OE

A

L

H

H

L

L

L

H

X

Z

LOGIC DIAGRAM (POSITIVE LOGIC)

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

MIN

MAX

UNIT

Supply voltage range

-0.5

4.6

V

-0.5

4.6

V

-0.5

V

Input clamp current

-50

mA

Output clamp current

-50

mA

Continuous output current

±50

mA

±100

mA

92

58

θ

JA

Package thermal impedance

60

°C/W

83

37

Storage temperature range

-65

150

°C

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

(3)

This value is limited to 4.6 V maximum.

(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.

2