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EXCLUSIVE-OR LOGIC
=1
EXCLUSIVE OR
These are five equivalent exclusive-OR symbols valid for an SN74LVC1G86 gate in positive logic; negation may be shown at any two ports.
= 2k 2k + 1
LOGIC-IDENTITY ELEMENT EVEN-PARITY ELEMENT ODD-PARITY ELEMENT
The output is active (low) if
all inputs stand at the same
logic level (i.e., A = B).
The output is active (low) if
an even number of inputs
(i.e., 0 or 2) are active.
The output is active (high) if
an odd number of inputs
(i.e., only 1 of the 2) are
active.
SN74LVC1G86-EP
SINGLE 2-INPUT EXCLUSIVE-OR GATE
SCES679 – JULY 2007
FUNCTION TABLE
INPUTS
OUTPUT
Y
A B
L L L
L H H
H L H
H H L
An exclusive-OR gate has many applications, some of which can be represented better by alternative logic
symbols.
2
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