HD74HC151
1 of-8-line Data Selector/Multiplexer
Description
The HD74HC151 selects one of the 8 data sources, depending on the address presented on the A, B and C
inputs. It features both true (Y) and complement (W) outputs. The strobe input must be at a low logic level
to enable this multiplexer. A high logic level at the storobe forces the W output high and the Y output low.
Features
鈥?/div>
High Speed Operation: t
pd
(Any D to Y or W) = 18 ns typ (C
L
= 50 pF)
鈥?/div>
High Output Current: Fanout of 10 LSTTL Loads
鈥?/div>
Wide Operating Voltage: V
CC
= 2 to 6 V
鈥?/div>
Low Input Current: 1 碌A(chǔ) max
鈥?/div>
Low Quiescent Supply Current: I
CC
(static) = 4 碌A(chǔ) max (Ta = 25擄C)
Function Table
Inputs
Select
C
X
L
L
L
L
H
H
H
H
X :
B
X
L
L
H
H
L
L
H
H
Irrelevant
A
X
L
H
L
H
L
H
L
H
Strobe S
H
L
L
L
L
L
L
L
L
Outputs
Y
L
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
W
H
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
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