IN74LS138N 데이터 시트보기 (PDF) - Integral Corp.

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IN74LS138N

3-to-8-Line Decoder/Demultiplexer

Integral Corp. 

IN74LS138

AC ELECTRICAL CHARACTERISTICS (TA=25°C, VCC = 5.0 V, CL = 15 pF, RL = 2 kΩ, tr =15

ns, tf = 6.0 ns)

Symbol

Parameter

Level

Min

Max

Unit

tPLH Maximum Propagation Delay, Input A to

Output Y

2

20

ns

tPHL Maximum Propagation Delay, Input A to

Output Y

41

ns

tPLH Maximum Propagation Delay, Input A to

Output Y

3

27

ns

tPHL Maximum Propagation Delay, Input A to

Output Y

39

ns

tPLH Maximum Propagation Delay , CS1 to

Output Y

3

26

ns

tPHL Maximum Propagation Delay , CS1 to

Output Y

38

ns

tPLH Maximum Output Transition Time , CS2 or CS3

to Output Y

2

18

ns

tPHL Maximum Output Transition Time , CS2 or CS3

to Output Y

32

ns

Figure 1. Switching Waveforms

Figure 2. Switching Waveforms

Figure 3. Switching Waveforms

NOTES A. CL includes probe and jig capacitance.

B. All diodes are 1N916 or 1N3064.

Figure 4. Test Circuit

3

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