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DM74LS138 датащи(PDF) 4 Page - Fairchild Semiconductor

номер детали DM74LS138
подробное описание детали  Decoder/Demultiplexer
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производитель  FAIRCHILD [Fairchild Semiconductor]
домашняя страница  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74LS138 датащи(HTML) 4 Page - Fairchild Semiconductor

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DM74LS139 Recommended Operating Conditions
DM74LS139 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 6: All typicals are at VCC = 5V, TA = 25°C.
Note 7: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 8: ICC is measured with all outputs enabled and OPEN.
DM74LS139 Switching Characteristics
at VCC = 5V and TA = 25°C
Symbol
Parameter
Min
Nom
Max
Units
VCC
Supply Voltage
4.75
5
5.25
V
VIH
HIGH Level Input Voltage
2
V
VIL
LOW Level Input Voltage
0.8
V
IOH
HIGH Level Output Current
−0.4
mA
IOL
LOW Level Output Current
8
mA
TA
Free Air Operating Temperature
0
70
°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 6)
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
−1.5
V
VOH
HIGH Level
VCC = Min, IOH = Max,
2.7
3.4
V
Output Voltage
VIL = Max, VIH = Min
VOL
LOW Level
VCC = Min, IOL = Max
0.35
0.5
Output Voltage
VIL = Max, VIH = Min
V
IOL = 4 mA, VCC = Min
0.25
0.4
II
Input Current @ Max Input Voltage
VCC = Max, VI = 7V
0.1
mA
IIH
HIGH Level Input Current
VCC = Max, VI = 2.7V
20
µA
IIL
LOW Level Input Current
VCC = Max, VI = 0.4V
−0.36
mA
IOS
Short Circuit Output Current
VCC = Max (Note 7)
−20
−100
mA
ICC
Supply Current
VCC = Max (Note 8)
6.8
11
mA
From (Input)
RL = 2 kΩ
Symbol
Parameter
To (Output)
CL = 15 pF
CL = 50 pF
Units
MinMax
MinMax
tPLH
Propagation Delay Time
Select to Output
18
27
ns
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
Select to Output
27
40
ns
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
Enable to Output
18
27
ns
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
Enable to Output
24
40
ns
HIGH-to-LOW Level Output


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