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DM74LS155 Datasheet(PDF) 4 Page - Fairchild Semiconductor

Part No. DM74LS155
Description  Dual 2-Line to 4-Line Decoders/Demultiplexers
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Maker  FAIRCHILD [Fairchild Semiconductor]
Homepage  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

DM74LS155 Datasheet(HTML) 4 Page - Fairchild Semiconductor

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DM74LS156 Recommended Operating Conditions
DM74LS156 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Note 7: All typicals are at VCC = 5V, TA = 25° C.
Note 8: ICC is measured with all outputs OPEN, A, B, and C1 inputs at 4.5V, and C2, G1, and G2 GROUNDED.
DM74LS156 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
VOH
HIGH Level Output Voltage
5.5
V
IOL
LOW Level Output Current
8
mA
TA
Free Air Operating Temperature
0
70
°C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
(Note 7)
VI
Input Clamp Voltage
VCC = Min, II = −18 mA
−1.5
V
ICEX
HIGH Level
VCC = Min, VO = 5.5V
100
µA
Output Current
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
ICC
Supply Current
VCC = Max (Note 8)
6.1
10
mA
From (Input)
RL = 2 kΩ
Symbol
Parameter
To (Output)
CL = 15 pF
CL = 50 pF
Units
Min
Max
Min
Max
tPLH
Propagation Delay Time
A, B, C2, G1
28
53
ns
LOW-to-HIGH Level Output
or G2 to Y
tPHL
Propagation Delay Time
A, B, C2, G1
33
43
ns
HIGH-to-LOW Level Output
or G2 to Y
tPLH
Propagation Delay Time
A or B
28
53
ns
LOW-to-HIGH Level Output
to Y
tPHL
Propagation Delay Time
A or B
33
43
ns
HIGH-to-LOW Level Output
to Y
tPLH
Propagation Delay Time
C1
28
53
ns
LOW-to-HIGH Level Output
to Y
tPHL
Propagation Delay Time
C1
34
43
ns
HIGH-to-LOW Level Output
to Y


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