MC74HCT138A_05 Datasheet, PDF(5/8 Page) ON Semiconductor – 1−of−8 Decoder/ Demultiplexer with LSTTL Compatible Inputs High−Performance Silicon−Gate CMOS

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MC74HCT138A_05 Datasheet, PDF (5/8 Pages) ON Semiconductor – 1−of−8 Decoder/ Demultiplexer with LSTTL Compatible Inputs High−Performance Silicon−Gate CMOS

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INPUT A

tPLH

OUTPUT Y

MC74HCT138A

SWITCHING WAVEFORMS

VALID

1.3 V

VALID

tPHL

INPUT CS1

2.7 V

1.3 V

0.3 V

GND

tPHL

OUTPUT Y

90%

1.3 V

10%

tTHL

Figure 1.

Figure 2.

INPUT

CS2, CS3

2.7 V

1.3 V

0.3 V

tPHL

OUTPUT Y

90%

1.3 V

10%

tTHL

Figure 3.

GND

tPLH

tTLH

GND

tPLH

tTLH

TEST CIRCUIT

DEVICE

UNDER

TEST

TEST POINT

OUTPUT

CL*

*Includes all probe and jig capacitance

Figure 4.

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