74HC151N 查看數據表（PDF） - NXP Semiconductors.
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74HC151N Datasheet PDF : 19 Pages
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NXP Semiconductors
74HC151; 74HCT151
8-input multiplexer
Table 8. Measurement points
Type
74HC151
74HCT151
Input
VM
0.5VCC
1.3 V
Output
VM
0.5VCC
1.3 V
VI 90 %
negative
pulse
GND
VI
positive
pulse
GND 10 %
VM
10 %
tf
tr
90 %
VM
VI
G
RT
tW
tW
VCC
DUT
VM
tr
tf
VM
VO
CL
001aah768
Fig 7.
Test data is given in Table 9.
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 9. Test data
Type
74HC151
74HCT151
Input
VI
VCC
3.0 V
tr, tf
6.0 ns
6.0 ns
Load
CL
15 pF, 50 pF
15 pF, 50 pF
Test
tPLH, tPHL
tPLH, tPHL
74HC_HCT151
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 11 February 2013
© NXP B.V. 2013. All rights reserved.
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