MC74HC139A View Datasheet(PDF) - ON Semiconductor

Part Name

Description

MFG CO.

MC74HC139A

Dual 1−of−4 Decoder/Demultiplexer

ON Semiconductor 

MC74HC139A

tf

90%

50%

SELECT 10%

OUTPUT Y

tTHL

tPHL

90%

50%

10%

tr

tPLH

VCC

GND

tTLH

Figure 3. Switching Waveform

INPUT A

tPLH

OUTPUT Y

VALID

50%

50%

VALID

tPHL

Figure 4. Switching Waveform

VCC

GND

TEST POINT

DEVICE

UNDER

TEST

OUTPUT

CL*

* Includes all probe and jig capacitance

Figure 5. Test Circuit

http://onsemi.com

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