74HC158 查看數據表（PDF） - NXP Semiconductors.
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74HC158 Datasheet PDF : 16 Pages
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Nexperia
74HC158
Quad 2-input multiplexer; inverting
VI 90 %
negative
pulse
GND
VI
positive
pulse
GND 10 %
VM
10 %
tf
tr
90 %
VM
G
VI
RT
tW
tW
VCC
DUT
VM
tr
tf
VM
VO
CL
DDK
Fig 8.
Test data is given in Table 8.
Definitions test circuit:
RT = Termination resistance should be equal to output impedance Zo of the pulse generator.
CL = Load capacitance including jig and probe capacitance.
RL = Load resistance.
S1 = Test selection switch.
Test circuit for measuring switching times
Table 8. Test data
Type
74HC158
Input
VI
VCC
tr, tf
6.0 ns
Load
CL
15 pF, 50 pF
Test
tPLH, tPHL
74HC158
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 23 December 2015
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11 of 16
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