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54LS156DMQB View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS156DMQB Dual 2-Line to 4-Line Decoders/Demultiplexers National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS156DMQB Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
’LS155 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
A B C2 G1
18
22
Low to High Level Output
or G2 to Y
tPHL
Propagation Delay Time
A B C2 G1
27
35
High to Low Level Output
or G2 to Y
tPLH
Propagation Delay Time
A or B
Low to High Level Output
to Y
18
24
tPHL
Propagation Delay Time
A or B
High to Low Level Output
to Y
27
35
tPLH
Propagation Delay Time
C1
Low to High Level Output
to Y
20
24
tPHL
Propagation Delay Time
C1
High to Low Level Output
to Y
27
35
Units
ns
ns
ns
ns
ns
ns
Recommended Operating Conditions
Symbol
VCC
VIH
VIL
VOH
IOL
TA
Parameter
Supply Voltage
High Level Input Voltage
Low Level Input Voltage
High Level Output Voltage
Low Level Output Current
Free Air Operating Temperature
DM54LS156
Min
Nom
Max
45
5
55
2
07
55
4
b55
125
DM74LS156
Min
Nom
Max
4 75
5
5 25
2
08
55
8
0
70
Units
V
V
V
V
mA
C
’LS156 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
VI
ICEX
VOL
Input Clamp Voltage
High Level Output
Current
Low Level Output
Voltage
VCC e Min II e b18 mA
VCC e Min VO e 5 5V
VIL e Max VIH e Min
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
ICC
Supply Current
VCC e Max (Note 2)
Note 1 All typicals are at VCC e 5V TA e 25 C
Note 2 ICC is measured with all outputs open A B and C1 inputs at 4 5V and C2 G1 and G2 grounded
Typ
(Note 1)
0 25
0 35
0 25
61
Max
b1 5
100
04
05
04
01
20
b0 36
10
Units
V
mA
V
mA
mA
mA
mA
3
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