SN54ALS86, SN54AS86A, SN74ALS86, SN74AS86A

QUADRUPLE 2INPUT EXCLUSIVEOR GATES

SDAS006B − APRIL 1982 − REVISED DECEMBER 1994

2

POST OFFICE BOX 655303

POST OFFICE BOX 1443

exclusive-OR logic

An exclusive-OR gate has many applications, some of which can be represented better by alternative logic

symbols.

EXCLUSIVE-OR

= 1

These are five equivalent exclusive-OR symbols valid for an

′ALS86 or ′AS86A 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 are 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.