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74LVQ151 View Datasheet(PDF) - Fairchild Semiconductor

Part Name
Description
Manufacturer
74LVQ151
Fairchild
Fairchild Semiconductor Fairchild
74LVQ151 Datasheet PDF : 6 Pages
1 2 3 4 5 6
Truth Table
Functional Description
Inputs
Outputs
The LVQ151 is a logic implementation of a single pole, 8-
position switch with the switch position controlled by the
E
S2
S1
S0
Z
Z
state of three Select inputs, S0, S1, S2. Both true and com-
H
X
X
X
H
L
plementary outputs are provided. The Enable input (E) is
active LOW. When it is not activated, the complementary
L
L
L
L
I0
I0
output is HIGH and the true output is LOW regardless of all
L
L
L
H
I1
I1
other inputs. The logic function provided at the output is:
L
L
H
L
I2
I2
Z = E (I0 S 0 S 1 S 2 + I1 S0 S 1 S 2 +
L
L
H
H
I3
I3
I2 S 0 S1 S 2 + I3 S0 S1 S 2 +
L
H
L
L
I4
I4
I4 S 0 S 1 S2 + I5 S0 S 1 S 2 +
L
H
L
H
I5
I5
I6 S 0 S1 S2 + I7 S0 S1 S 2)
L
H
H
L
I6
I6
The LVQ151 provides the ability, in one package to select
L
H
H
H
I7
I7
from eight sources of data or control information. By proper
H = HIGH Voltage Level
L = LOW Voltage Level
X = Immaterial
manipulation of the inputs, the LVQ151 can provide any
logic function of four variables and its complement.
Logic Diagram
Please note that this diagram is provided only for the understanding of logic operations and should not be used to estimate propagation delays.
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