54LS151 DM54LS151 DM74LS151 Data Selector Multiplexer
June 1989
54LS151 DM54LS151 DM74LS151
Data Selector Multiplexer
General Description
This data selector multiplexer contains full on-chip decod-
ing to select the desired data source The 鈥橪S151 selects
one-of-eight data sources The 鈥橪S151 has a strobe input
which must be at a low logic level to enable these devices
A high level at the strobe forces the W output high and the
Y output low
The 鈥橪S151 features complementary W and Y outputs
Features
Y
Y
Y
Y
Y
Y
Y
Select one-of-eight data lines
Performs parallel-to-serial conversion
Permits multiplexing from N lines to one line
Also for use as Boolean function generator
Typical average propagation delay time data input to W
output 12 5 ns
Typical power dissipation 30 mW
Alternate Military Aerospace device (54LS151) is avail-
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
TL F 6392 鈥?1
Order Number 54LS151DMQB 54LS151FMQB 54LS151LMQB
DM54LS151J DM54LS151W DM74LS151M or DM74LS151N
See NS Package Number E20A J16A M16A N16E or W16A
Truth Table
Inputs
Select
C
X
L
L
L
L
H
H
H
H
B
X
L
L
H
H
L
L
H
H
A
X
L
H
L
H
L
H
L
H
Strobe
S
H
L
L
L
L
L
L
L
L
Outputs
Y
L
D0
D1
D2
D3
D4
D5
D6
D7
W
H
D0
D1
D2
D3
D4
D5
D6
D7
H
e
High Level L
e
Low Level X
e
Don鈥檛 Care
D0 D1 D7
e
the level of the respective D input
C
1995 National Semiconductor Corporation
TL F 6392
RRD-B30M105 Printed in U S A