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DM74LS139N View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
View to exact match
DM74LS139N
Fairchild
Fairchild Semiconductor Fairchild
DM74LS139N Datasheet PDF : 7 Pages
1 2 3 4 5 6 7
Absolute Maximum Ratings(Note 2)
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range 0°C to +70°C
Storage Temperature Range
65°C to +150°C
Note 2: The “Absolute Maximum Ratings” are those values beyond which
the safety of the device cannot be guaranteed. The device should not be
operated at these limits. The parametric values defined in the Electrical
Characteristics tables are not guaranteed at the absolute maximum ratings.
The “Recommended Operating Conditions” table will define the conditions
for actual device operation.
DM74LS138 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
Nom
Max
Units
4.75
5
5.25
V
2
V
0.8
V
0.4
mA
8
mA
0
70
°C
DM74LS138 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
VOH
HIGH Level Output Voltage
VCC = Min, IOH = Max, VIL = Max, VIH = Min
2.7
VOL
LOW Level
VCC = Min, IOL = Max, VIL = Max, VIH = Min
Output Voltage
IOL = 4 mA, VCC = Min
II
Input Current @ Max Input Voltage VCC = Max, VI = 7V
IIH
HIGH Level Input Current
VCC = Max, VI = 2.7V
IIL
LOW Level Input Current
VCC = Max, VI = 0.4V
IOS
Short Circuit Output Current
VCC = Max (Note 4)
20
ICC
Supply Current
VCC = Max (Note 5)
Note 3: All typicals are at VCC = 5V, TA = 25°C.
Note 4: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 5: ICC is measured with all outputs enabled and OPEN.
Typ
(Note 3)
3.4
0.35
0.25
6.3
Max
1.5
0.5
0.4
0.1
20
0.36
100
10
Units
V
V
V
mA
µA
mA
mA
mA
DM74LS138 Switching Characteristics
at VCC = 5V and TA = 25°C
From (Input)
Levels
Symbol
Parameter
To (Output)
of Delay
tPLH
Propagation Delay Time
Select to Output
2
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
Select to Output
2
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
Select to Output
3
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
Select to Output
3
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
Enable to Output
2
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
Enable to Output
2
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
Enable to Output
3
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
Enable to Output
3
HIGH-to-LOW Level Output
RL = 2 k
CL = 15 pF
CL = 50 pF
Min
Max
Min
Max
18
27
27
40
18
27
27
40
18
27
24
40
18
27
28
40
Units
ns
ns
ns
ns
ns
ns
ns
ns
3
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