54LS151 Datasheet, PDF (1/6 Pages) National Semiconductor (TI) – 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 ’LS151 selects
one-of-eight data sources The ’LS151 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 ’LS151 features complementary W and Y outputs
Features
Y _{Select one-of-eight data lines}
Y _{Performs parallel-to-serial conversion}
Y _{Permits multiplexing from N lines to one line}
Y _{Also for use as Boolean function generator}
Y _{Typical average propagation delay time data input to W}
output 12 5 ns
Y _{Typical power dissipation 30 mW}
Y _{Alternate Military Aerospace device (54LS151) is avail-}
able Contact a National Semiconductor Sales Office
Distributor for specifications
Connection Diagram
Dual-In-Line Package
Truth Table
TL F 6392 – 1
Order Number 54LS151DMQB 54LS151FMQB 54LS151LMQB
DM54LS151J DM54LS151W DM74LS151M or DM74LS151N
See NS Package Number E20A J16A M16A N16E or W16A
Inputs
Select
C
B
A
Strobe
S
X
X
X
H
L
L
L
L
L
L
H
L
L
H
L
L
L
H
H
L
H
L
L
L
H
L
H
L
H
H
L
L
H
H
H
L
H e High Level L e Low Level X e Don’t Care
D0 D1 D7 e the level of the respective D input
Outputs
Y
W
L
H
D0
D0
D1
D1
D2
D2
D3
D3
D4
D4
D5
D5
D6
D6
D7
D7
C1995 National Semiconductor Corporation TL F 6392
RRD-B30M105 Printed in U S A