SN54LV21A, SN74LV21A

DUAL 4INPUT POSITIVEAND GATES

SCES340E − SEPTEMBER 2000 − REVISED APRIL 2005

2

POST OFFICE BOX 655303

FUNCTION TABLE

(each gate)

INPUTS

OUTPUT

A

B

C

D

OUTPUT

Y

H

H

H

H

H

L

XX

X

L

X

LX

X

L

X

XL

X

L

X

X

X

L

L

logic diagram (positive logic)

1A

1Y

1B

1C

1D

2A

2Y

2B

2C

2D

1

2

4

5

9

10

12

13

68

Pin numbers shown are for the D, DB, DGV, J, NS, PW, and W packages.

−0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . .

−0.5 V to 7 V

. . . . . . . . . . . . . . . . . . . . . . . . .

−20 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±25 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

±50 mA

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Package thermal impedance,

86

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DB package

96

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DGV package

127

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

NS package

76

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PW package

113

°C/W

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

−65

°C to 150°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

† 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.

NOTES:

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

2. This value is limited to 5.5 V maximum.

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