74HCT27N 查看數據表（PDF） - NXP Semiconductors.
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74HCT27N Datasheet PDF : 16 Pages
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Nexperia
74HC27; 74HCT27
Triple 3-input NOR gate
9,
W:
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SXOVH
90
9
WI
9,
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SXOVH
WU
90
9
W:
90
WU
WI
90
9,
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9&&
92
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57
9&&
5/ 6
&/
RSHQ
DDG
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
Input
74HC27
74HCT27
VI
tr, tf
VCC
6 ns
3V
6 ns
Load
CL
15 pF, 50 pF
15 pF, 50 pF
RL
1 k
1 k
S1 position
tPHL, tPLH
open
open
74HC_HCT27
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5.1 — 27 November 2015
© Nexperia B.V. 2017. All rights reserved
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