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DM74LS155MX View Datasheet(PDF) - Fairchild Semiconductor

Part NameDescriptionManufacturer
DM74LS155MX Dual 2-Line to 4-Line Decoders/Demultiplexers Fairchild
Fairchild Semiconductor Fairchild
DM74LS155MX Datasheet PDF : 6 Pages
1 2 3 4 5 6
Absolute Maximum Ratings(Note 3)
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 3: 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.
DM74LS155 Recommended Operating Conditions
Symbol
VCC
VIH
VIL
VOH
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
DM74LS155 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Typ
Min
(Note 4)
VI
Input Clamp Voltage
VOH
HIGH Level
Output Voltage
VOL
LOW Level
Output Voltage
II
Input Current @ Max Input Voltage
IIH
HIGH Level Input Current
IIL
LOW Level Input Current
IOS
Short Circuit Output Current
ICC
Supply Current
Note 4: All typicals are at VCC = 5V, TA = 25° C.
VCC = Min, II = −18 mA
VCC = Min, IOH = Max
VIL = Max, VIH = Min
VCC = Min, IOL = Max
VIL = Max, VIH = Min
IOL = 4 mA, VCC = Min
VCC = Max, VI = 7V
VCC = Max, VI = 2.7V
VCC = Max, VI = 0.4V
VCC = Max (Note 5)
VCC = Max (Note 6)
2.7
3.4
0.35
0.25
20
6.1
Note 5: Not more than one output should be shorted at a time, and the duration should not exceed one second.
Note 6: ICC is measured with all outputs OPEN, A,B, and C1 inputs at 4.5V, and C2, G1, and G2 inputs GROUNDED.
Max
1.5
0.5
0.4
0.1
20
0.36
100
10
Units
V
V
V
mA
µA
mA
mA
mA
DM74LS155 Switching Characteristics
at VCC = 5V and TA = 25°C
From (Input)
Symbol
Parameter
To (Output)
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
tPLH
Propagation Delay Time
LOW-to-HIGH Level Output
tPHL
Propagation Delay Time
HIGH-to-LOW Level Output
A, B, C2, G1
or G2 to Y
A, B, C2, G1
or G2 to Y
A or B
to Y
A or B
to Y
C1
to Y
C1
to Y
RL = 2 k
CL = 15 pF
CL = 50 pF
Min
Max
Min
Max
18
22
27
35
18
24
27
35
20
24
27
35
Units
ns
ns
ns
ns
ns
ns
3
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