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54LS139M View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS139M Decoders/Demultiplexers National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS139M Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
’LS138 Switching Characteristics
at VCC e 5V and TA e 25 C (See Section 1 for Test Waveforms and Output Load)
Symbol
Parameter
From (Input)
To (Output)
Levels
of Delay
RL e 2 kX
CL e 15 pF
CL e 50 pF
Min
Max
Min
Max
tPLH
Propagation Delay Time
Select to
2
Low to High Level Output
Output
18
27
tPHL
Propagation Delay Time
Select to
2
High to Low Level Output
Output
27
40
tPLH
Propagation Delay Time
Select to
3
Low to High Level Output
Output
18
27
tPHL
Propagation Delay Time
Select to
3
High to Low Level Output
Output
27
40
tPLH
Propagation Delay Time
Enable to
2
Low to High Level Output
Output
18
27
tPHL
Propagation Delay Time
Enable to
High to Low Level Output
Output
2
24
40
tPLH
Propagation Delay Time
Enable to
Low to High Level Output
Output
3
18
27
tPHL
Propagation Delay Time
Enable to
High to Low Level Output
Output
3
28
40
Units
ns
ns
ns
ns
ns
ns
ns
ns
Recommended Operating Conditions
Symbol
VCC
VIH
VIL
IOH
IOL
TA
Parameter
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Current
Low Level Output Current
Free Air Operating Temperature
Min
45
2
b55
DM54LS139
Nom
Max
5
55
07
b0 4
4
125
DM74LS139
Min
Nom
Max
4 75
5
5 25
2
08
b0 4
8
0
70
Units
V
V
V
mA
mA
C
3
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