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| 74HCT138 Datasheet, PDF (6/10 Pages) Diodes Incorporated – 3 TO 8 LINE DECODER DEMULTIPLEXER | |||
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Operating Characteristics (@TA = +25°C, unless otherwise specified.)
Parameter
Test Conditions
VCC = 5V
TYP
Unit
Cpd
Power Dissipation Capacitance f = 1 MHz all outputs switching-no load
21
pF
74HCT138
Parameter Measurement Information
VCC
4.5V
5.0V
Inputs
VI
tr/tf
3V
6ns
3V
6ns
VM
VCC/2
VCC/2
CL
50pF
15pF used for 5V typical test
Voltage Waveform
Pulse Duration
Voltage Waveform
Propagation Delay Times
Inverting and Non Inverting Outputs
Notes: A . Includes test lead and test apparatus capacitance.
B. All pulses are supplied at pulse repetition rate ⤠10 MHz
C. Inputs are measured separately one transition per measurement
D. tPLH and tPHL are the same as tPD
Figure 1. Load Circuit and Voltage Waveforms
74HCT138
Document number: DS35489 Rev. 3 - 2
6 of 10
www.diodes.com
June 2013
© Diodes Incorporated
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