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74HC21 Datasheet(PDF) 7 Page - NXP Semiconductors

No. de pieza 74HC21
Descripción Electrónicos  Dual 4-input AND gate
PDF  14 Pages
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Fabricante Electrónico  NXP [NXP Semiconductors]
Página de inicio  http://www.nxp.com
Logo NXP - NXP Semiconductors

74HC21 Datasheet(HTML) 7 Page - NXP Semiconductors

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74HC21_5
© NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 05 — 7 May 2009
7 of 14
NXP Semiconductors
74HC21
Dual 4-input AND 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.
Fig 8.
Test circuit for measuring switching times
001aah768
tW
tW
tr
tr
tf
VM
VI
negative
pulse
GND
VI
positive
pulse
GND
10 %
90 %
90 %
10 %
VM
VM
VM
tf
VCC
DUT
RT
VI
VO
CL
G
Table 9.
Test data
Type
Input
Load
Test
VI
tr, tf
CL
74HC21
VCC
6.0 ns
15 pF, 50 pF
tPLH, tPHL



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