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54LS139FMQB View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS139FMQB Decoders/Demultiplexers National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS139FMQB Datasheet PDF : 9 Pages
1 2 3 4 5 6 7 8 9
’LS139 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
VI
Input Clamp Voltage
VCC e Min II e b18 mA
VOH
High Level Output
Voltage
VCC e Min IOH e Max
DM54
25
VIL e Max VIH e Min
DM74
27
VOL
Low Level Output
Voltage
VCC e Min IOL e Max
VIL e Max VIH e Min
DM54
DM74
IOL e 4 mA VCC e Min
DM74
II
Input Current Max
VCC e Max VI e 7V
Input Voltage
IIH
High Level Input Current
VCC e Max VI e 2 7V
IIL
Low Level Input Current
VCC e Max VI e 0 4V
IOS
Short Circuit
Output Current
VCC e Max
(Note 2)
DM54
DM74
b20
b20
ICC
Supply Current
VCC e Max (Note 3)
Note 1 All typicals are at VCC e 5V TA e 25 C
Note 2 Not more than one output should be shorted at a time and the duration should not exceed one second
Note 3 ICC is measured with all outputs enabled and open
Typ
(Note 1)
34
34
0 25
0 35
0 25
68
Max
b1 5
04
05
04
01
20
b0 36
b100
b100
11
’LS139 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)
RL e 2 kX
CL e 15 pF
CL e 50 pF
Min
Max
Min
Max
tPLH
Propagation Delay Time
Select to
Low to High Level Output
Output
18
27
tPHL
Propagation Delay Time
Select to
High to Low Level Output
Output
27
40
tPLH
Propagation Delay Time
Enable to
Low to High Level Output
Output
18
27
tPHL
Propagation Delay Time
Enable to
High to Low Level Output
Output
24
40
Units
V
V
V
mA
mA
mA
mA
mA
Units
ns
ns
ns
ns
Function Tables
LS138
Inputs
Enable Select
Outputs
G1 G2 C B A YO Y1 Y2 Y3 Y4 Y5 Y6 Y7
X H XXX H H H H H H H H
L X XXX H H H H H H H H
H L LLL L H H H H H H H
H L LLH H L H H H H H H
H L LHL H H L H H H H H
H L LHH H H H L H H H H
H L HLL H H H H L H H H
H L HLH H H H H H L H H
H L HHL H H H H H H L H
H L HHH H H H H H H H L
G2 e G2A a G2B
H e High Level L e Low Level X e Don’t Care
LS139
Inputs
Enable
Select
Outputs
G
B A Y0 Y1 Y2 Y3
H
X
X
H
H
H
H
L
L
L
L
H
H
H
L
L
H
H
L
H
H
L
HL
H
H
L
H
L
HH
H
H
H
L
H e High Level L e Low Level X e Don’t Care
4
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