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74LS168 Folha de dados(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Nome de Peças 74LS168
Descrição Electrónicos  54LS168 Synchronous Bi-Directional BCD Decade Counter
PDF  6 Pages
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Fabricante Electrônico  NSC [National Semiconductor (TI)]
Página de início  http://www.national.com
Logo NSC - National Semiconductor (TI)

74LS168 Folha de dados(HTML) 2 Page - National Semiconductor (TI)

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Absolute Maximum Ratings (Note)
If MilitaryAerospace specified devices are required
please contact the National Semiconductor Sales
OfficeDistributors for availability and specifications
Supply Voltage
7V
Input Voltage
55V
Operating Free Air Temperature Range
54LS
b
55 Cto a125 C
Storage Temperature Range
b
65 Cto a150 C
Note
The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed The device should not be operated at these limits The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation
Recommended Operating Conditions
Symbol
Parameter
54LS168
Units
Min
Nom
Max
VCC
Supply Voltage
45
5
55
V
VIH
High Level Input Voltage
2
V
VIL
Low Level Input Voltage
07
V
IOH
High Level Output Current
b
04
mA
IOL
Low Level Output Current
4
mA
TA
Free Air Operating Temperature
b
55
125
C
ts (H)
Setup Time HIGH or LOW
15
ns
ts (L)
Pn CEP or CET to CP
15
th (H)
Hold Time HIGH or LOW
5
ns
th (L)
Pn CEP or CET to CP
5
ts (H)
Setup Time HIGH or LOW
20
ns
ts (L)
PE to CP
20
th (H)
Hold Time HIGH or LOW
0
ns
th (L)
PE to CP
0
ts (H)
Setup Time HIGH or LOW
25
ns
ts (L)
UD to CP
25
th (H)
Hold Time HIGH or LOW
0
ns
th (L)
UD to CP
0
tw (H)
CP Pulse Width HIGH or LOW
20
ns
tw (L)
20
2



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