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74HC238N Folha de dados(PDF) 6 Page - NXP Semiconductors

Nome de Peças 74HC238N
Descrição Electrónicos  3-to-8 line decoder/demultiplexer
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Fabricante Electrônico  PHILIPS [NXP Semiconductors]
Página de início  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HC238N Folha de dados(HTML) 6 Page - NXP Semiconductors

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December 1990
6
Philips Semiconductors
Product specification
3-to-8 line decoder/demultiplexer
74HC/HCT238
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: standard
ICC category: MSI
Note to HCT types
The value of additional quiescent supply current (
∆ICC) for a unit load of 1 is given in the family specifications.
To determine
∆ICC per input, multiply this value by the unit load coefficient shown in the table below.
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; tr =tf = 6 ns; CL = 50 pF
INPUT
UNIT LOAD COEFFICIENT
An
En
E3
0.70
0.40
1.45
SYMBOL PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HCT
VCC
(V)
WAVEFORMS
+25
−40 to +85
−40 to +125
min.
typ.
max.
min. max.
min.
max.
tPHL
propagation delay
An to Yn
21
35
44
53
ns
4.5
Fig.6
tPLH
propagation delay
An to Yn
17
35
44
53
ns
4.5
Fig.6
tPHL
propagation delay
E3 to Yn
22
37
46
56
ns
4.5
Fig.6
tPLH
propagation delay
E3 to Yn
18
37
46
56
ns
4.5
Fig.6
tPHL
propagation delay
En to Yn
21
35
44
53
ns
4.5
Fig.7
tPLH
propagation delay
En to Yn
18
35
44
53
ns
4.5
Fig.7
tTHL/ tTLH
output transition time
7
15
19
22
ns
4.5
Figs 6 and 7


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