High Speed Exclusive-OR Circuit
Original Publication Date: 1979-Nov-01
Included in the Prior Art Database: 2005-Feb-20
Conventional implementation of the exclusive-OR (XOR) function requires four internal NAND cells. The logical diagram is shown in Fig. 1. The high speed XOR circuit shown in Fig. 2 requires only two internal cells. In addition, the time delay performance is enhanced by a factor of two.