IN74HC151
8-INPUT DATA SELECTOR/MULTIPLEXER
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
ORDERING INFORMATION
• Low Input Current: 1.0 µA
IN74HC151N Plastic
IN74HC151D SOIC
TA = -55° to 125° C for all
packages
• High Noise Immunity Characteristic of CMOS Devices
PIN ASSIGNMENT
LOGIC DIAGRAM
FUNCTION TABLE
Inputs
Outputs
A2 A1 A0 Strobe
Y
X
L
X
L
X
L
H
L
H
L
H
L
H
H
L
L
D0
H
D0
D1
D2
D3
D4
D5
D6
D7
L
L
L
H
H
H
H
L
H
H
L
L
H
H
L
L
L
L
L
L
L
D1
D2
D3
D4
D5
D6
D7
PIN 16 =VCC
PIN 8 = GND
D0,D1...D7=the level of the
respective D input
X = don’t care
1
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