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DM74LS155 датащи(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
номер детали DM74LS155
подробное описание детали  Dual 2-Line to 4-Line Decoders/Demultiplexers
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

DM74LS155 датащи(HTML) 3 Page - National Semiconductor (TI)

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’LS155 Switching Characteristics
at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load)
From (Input)
RL e 2kX
Symbol
Parameter
To (Output)
CL e 15 pF
CL e 50 pF
Units
Min
Max
Min
Max
tPLH
Propagation Delay Time
A B C2 G1
18
22
ns
Low to High Level Output
or G2 to Y
tPHL
Propagation Delay Time
A B C2 G1
27
35
ns
High to Low Level Output
or G2 to Y
tPLH
Propagation Delay Time
A or B
18
24
ns
Low to High Level Output
to Y
tPHL
Propagation Delay Time
A or B
27
35
ns
High to Low Level Output
to Y
tPLH
Propagation Delay Time
C1
20
24
ns
Low to High Level Output
to Y
tPHL
Propagation Delay Time
C1
27
35
ns
High to Low Level Output
to Y
Recommended Operating Conditions
Symbol
Parameter
DM54LS156
DM74LS156
Units
Min
Nom
Max
Min
Nom
Max
VCC
Supply Voltage
45
5
55
475
5
525
V
VIH
High Level Input Voltage
2
2
V
VIL
Low Level Input Voltage
07
08
V
VOH
High Level Output Voltage
55
55
V
IOL
Low Level Output Current
4
8
mA
TA
Free Air Operating Temperature
b
55
125
0
70
C
’LS156 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 1)
VI
Input Clamp Voltage
VCC e Min II eb18 mA
b
15
V
ICEX
High Level Output
VCC e Min VO e 55V
100
m
A
Current
VIL e Max VIH e Min
VOL
Low Level Output
VCC e Min IOL e Max
DM54
025
04
Voltage
VIL e Max VIH e Min
DM74
035
05
V
IOL e 4 mA VCC e Min
DM74
025
04
II
Input Current
Max
VCC e Max VI e 7V
01
mA
Input Voltage
IIH
High Level Input Current
VCC e Max VI e 27V
20
m
A
IIL
Low Level Input Current
VCC e Max VI e 04V
b
036
mA
ICC
Supply Current
VCC e Max (Note 2)
61
10
mA
Note 1
All typicals are at VCC e 5V TA e 25 C
Note 2
ICC is measured with all outputs open A B and C1 inputs at 45V and C2 G1 and G2 grounded
3


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