SN54ALS136, SN54AS136, SN74ALS136, SN74AS136

QUADRUPLE 2-INPUT EXCLUSIVE-OR GATES

WITH OPEN-COLLECTOR OUTPUTS

SDAS162 – MARCH 1984–REVISED OCTOBER 1988

POST OFFICE BOX 655303

2

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 ’ALS136 gate in positive logic; negation may be

shown at any two ports.

LOGIC IDENTITY ELEMENT

EVEN-PARITY

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.

=

2k

2k + 1