MC74LCX139D View Datasheet(PDF) - ON Semiconductor

Part Name

Description

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MC74LCX139D

Dual Low-Voltage CMOS 2-to-4 Decoder/Demultiplexer With 5V−Tolerant Inputs

ON Semiconductor 

A

tPLH

Y

50%

50% VCC

MC74LCX139

VCC

GND

tPHL

E

50%

Y

tPHL

50% VCC

VCC

GND

tPLH

Figure 5. Waveform 1 Prop Delays

Figure 6. Waveform 2 Output Enable

PULSE

GENERATOR

VCC

DUT

RT

CL

RL

CL = 50 pF or equivalent (Includes jig and probe capacitance)

RL = R1 = 500 W or equivalent

RT = ZOUT of pulse generator (typically 50 W)

Figure 7. Test Circuit

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5

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