900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf




National Semiconductor Electronic Components Datasheet

DM54LS158 Datasheet

Quad 2-Line to 1-Line Data Selectors/Multiplexers

No Preview Available !

June 1989
54LS157 DM54LS157 DM74LS157
54LS158 DM54LS158 DM74LS158
Quad 2-Line to 1-Line Data Selectors Multiplexers
General Description
These data selectors multiplexers contain inverters and
drivers to supply full on-chip data selection to the four out-
put gates A separate strobe input is provided A 4-bit word
is selected from one of two sources and is routed to the four
outputs The LS157 presents true data whereas the LS158
presents inverted data to minimize propagation delay time
Applications
Y Expand any data input point
Y Multiplex dual data buses
Y Generate four functions of two variables (one variable
is common)
Y Source programmable counters
Features
Y Buffered inputs and outputs
Y Typical Propagation Time
LS157 9 ns
LS158 7 ns
Y Typical Power Dissipation
LS157 49 mW
LS158 24 mW
Y Alternate Military Aerospace device (54LS157
54LS158) is available Contact a National Semiconduc-
tor Sales Office Distributor for specifications
Connection Diagrams
Dual-In-Line Package
Dual-In-Line Package
TL F 6396 – 1
Order Number 54LS157DMQB 54LS157FMQB
54LS157LMQB DM54LS157J DM54LS157W
DM74LS157M or DM74LS157N
See NS Package Number E20A J16A
M16A N16E or W16A
TL F 6396 – 2
Order Number 54LS158DMQB 54LS158FMQB
54LS158LMQB DM54LS158J DM54LS158W
DM74LS158M or DM74LS158N
See NS Package Number E20A J16A
M16A N16E or W16A
Function Table
Inputs
Output Y
Strobe Select A B LS157 LS158
H X XX L H
L
L LX L
H
L
L HX H
L
L H XL L H
L H XH H L
H e High Level L e Low Level X e Don’t Care
C1995 National Semiconductor Corporation TL F 6396
RRD-B30M105 Printed in U S A


National Semiconductor Electronic Components Datasheet

DM54LS158 Datasheet

Quad 2-Line to 1-Line Data Selectors/Multiplexers

No Preview Available !

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
Min
4 75
2
0
DM74LS157
Nom
Max
5 5 25
08
b0 4
8
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
VOH
Input Clamp Voltage
High Level Output
Voltage
VCC e Min II e b18 mA
VCC e Min IOH e Max
VIL e Max VIH e Min
DM54
DM74
25
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


Part Number DM54LS158
Description Quad 2-Line to 1-Line Data Selectors/Multiplexers
Maker National Semiconductor
Total Page 8 Pages
PDF Download

DM54LS158 Datasheet PDF

View PDF for Mobile








Similar Datasheet

1 DM54LS151 Data Selector/Multiplexer
National Semiconductor
2 DM54LS153 Dual 4-Line to 1-Line Data Selectors/Multiplexers
National Semiconductor
3 DM54LS154 4-Line to 16-Line Decoders/Demultiplexers
National Semiconductor
4 DM54LS155 Dual 2-Line to 4-Line Decoders/Demultiplexers
National Semiconductor
5 DM54LS156 Dual 2-Line to 4-Line Decoders/Demultiplexers
National Semiconductor
6 DM54LS157 Quad 2-Line to 1-Line Data Selectors/Multiplexers
National Semiconductor
7 DM54LS158 Quad 2-Line to 1-Line Data Selectors/Multiplexers
National Semiconductor





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy