IN74HC151
8-I
NPUT
D
ATA
S
ELECTOR
/M
ULTIPLEXER
High-Performance Silicon-Gate CMOS
The IN74HC151 is identical in pinout to the LS/ALS151. The
device inputs are compatible with standard CMOS outputs; with
pullup resistors, they are compatible with LS/ALSTTL outputs.
The device selects one of the eight binary Data Inputs, as
determined by the Address Inputs. The Strobe pin must be at a
low level for the selected data to appear at the outputs. If Strobe
is high, the Y output is forced to a low level and the Y output is
forced to a high level.
Outputs Directly Interface to CMOS, NMOS, and TTL
Operating Voltage Range: 2.0 to 6.0 V
Low Input Current: 1.0
µA
High Noise Immunity Characteristic of CMOS Devices
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ORDERING INFORMATION
IN74HC151N Plastic
IN74HC151D SOIC
T
A
= -55° to 125° C for all
packages
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
A2
X
L
L
Inputs
A1 A0 Strobe
X
L
L
H
H
L
L
H
H
X
L
H
L
H
L
H
L
H
H
L
L
L
L
L
L
L
L
Outputs
Y
Y
L
D0
D1
D2
D3
D4
D5
D6
D7
H
PIN 16 =V
CC
PIN 8 = GND
L
L
H
H
H
H
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
D0,D1...D7=the level of the
respective D input
X = don’t care
1
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