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74HC27BQ Datasheet(PDF) 8 Page - NXP Semiconductors

Part No. 74HC27BQ
Description  Triple 3-input NOR gate
Download  16 Pages
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Manufacturer  NXP [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo NXP - NXP Semiconductors

74HC27BQ Datasheet(HTML) 8 Page - NXP Semiconductors

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74HC_HCT27_3
© NXP B.V. 2008. All rights reserved.
Product data sheet
Rev. 03 — 7 January 2008
8 of 16
NXP Semiconductors
74HC27; 74HCT27
Triple 3-input NOR gate
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
Fig 7.
Load circuit for measuring switching times
VM
VM
tW
tW
10 %
90 %
0 V
VI
VI
negative
pulse
positive
pulse
0 V
VM
VM
90 %
10 %
tf
tr
tr
tf
001aad983
DUT
VCC
VCC
VI
VO
RT
RL
S1
CL
open
PULSE
GENERATOR
Table 9.
Test data
Type
Input
Load
S1 position
VI
tr, tf
CL
RL
tPHL, tPLH
74HC27
VCC
6 ns
15 pF, 50 pF
1 k
open
74HCT27
3 V
6 ns
15 pF, 50 pF
1 k
open


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