MC74VHC139M 查看數據表（PDF） - ON Semiconductor

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MC74VHC139M

Dual 2−to−4 Decoder/Demultiplexer

ON Semiconductor 

MC74VHC139

SWITCHING WAVEFORMS

A

tPLH

Y

50%

50% VCC

VCC

GND

tPHL

Figure 6.

E

50%

Y

tPHL

50% VCC

Figure 7.

VCC

GND

tPLH

DEVICE

UNDER

TEST

TEST POINT

OUTPUT

CL*

*Includes all probe and jig capacitance

Figure 8. Test Circuit

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5

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