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54LS157FMQB View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54LS157FMQB Quad 2-Line to 1-Line Data Selectors/Multiplexers National-Semiconductor
National ->Texas Instruments National-Semiconductor
54LS157FMQB Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
Absolute Maximum Ratings (Note)
If Military Aerospace specified devices are required
please contact the National Semiconductor Sales
Office Distributors for availability and specifications
Supply Voltage
7V
Input Voltage
7V
Operating Free Air Temperature Range
DM54LS and 54LS
b55 C to a125 C
DM74LS
0 C to a70 C
Storage Temperature Range
b65 C to a150 C
Note The ‘‘Absolute Maximum Ratings’’ are those values
beyond which the safety of the device cannot be guaran-
teed The device should not be operated at these limits The
parametric values defined in the ‘‘Electrical Characteristics’’
table are not guaranteed at the absolute maximum ratings
The ‘‘Recommended Operating Conditions’’ table will define
the conditions for actual device operation
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
45
2
b55
DM54LS157
Nom
Max
5
55
07
b0 4
4
125
DM74LS157
Min
Nom
Max
4 75
5
5 25
2
08
b0 4
8
0
70
Units
V
V
V
mA
mA
C
’LS157 Electrical Characteristics
over recommended operating free air temperature range (unless otherwise noted)
Symbol
Parameter
Conditions
Min
VI
Input Clamp Voltage
VCC e Min II e b18 mA
VOH
High Level Output
VCC e Min IOH e Max
DM54
25
Voltage
VIL e Max VIH e Min
DM74
27
VOL
Low Level Output
VCC e Min IOL e Max
DM54
Voltage
VIL e Max VIH e Min
DM74
IOL e 4 mA VCC e Min
DM74
II
Input Current Max
VCC e Max
Input Voltage
VI e 7V
S or G
A or B
IIH
High Level Input
VCC e Max
Current
VI e 2 7V
S or G
A or B
IIL
Low Level Input
VCC e Max
Current
VI e 0 4V
S or G
A or B
IOS
Short Circuit
Output Current
VCC e Max
(Note 2)
DM54
DM74
b20
b20
ICC
Supply Current
VCC e Max (Note 3)
Note 1 All typicals are at VCC e 5V TA e 25 C
Note 2 Not more than one output should be shorted at a time and the duration should not exceed one second
Note 3 ICC is measured with 4 5V applied to all inputs and all outputs open
Typ
(Note 1)
34
34
0 25
0 35
0 25
97
Max
b1 5
04
05
04
02
01
40
20
b0 8
b0 4
b100
b100
16
Units
V
V
V
mA
mA
mA
mA
mA
2
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