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by tankenmate 2764 days ago
Actually if you take an XOR gate with a naive translation into NAND gates you would use 20 transistors, but if you don't need a large fan out from the output you can actually do it with 6 transistors using a pass gate layout (which is neither NAND nor NOR). So typically you don't use NAND vs NOR because of transistor count.
1 comments

Oh! Good to know. Thank you!