U74LVC257

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 6

www.unisonic.com.tw

QW-R126-034.A

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PIN CONFIGURATION

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FUNCTION TABLE (each gate)

INPUTS

INPUT( OE )

INPUT( A/ B )

A

B

OUTPUT(Y)

H

X

X

X

Z

L

L

L

X

L

L

L

H

X

H

L

H

X

L

L

L

H

X

H

H

H = High voltage level；L = Low voltage level；X = Don’t care；Z = High-impedance OFF-state