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Altera_Forum
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16 years ago

AND vs XOR gate

Im sorry if my post doesnt belong to here. Just a short question: Which one is larger in term of implementation? AND gate or XOR gate ? thanks
Altera_Forum's avatar
Altera_Forum
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16 years ago

Well since you are asking the question in an FPGA forum, the answer is:

"They are the same.". Both fit inside a single ALUT.

Now if the question were about implementing the operation in silicon. The XOR gate would have a higher transition count.

A XOR gate equates to:

A+B & !(A&B).

Jake