VLSI Design

Research Article

Performance Analysis of High Speed Hybrid CMOS Full Adder Circuits for Low Voltage VLSI Design

Figure 4

Basic designs of XOR-XNOR gate found in literature.
173079.fig.004a
(a) XOR-XNOR (6T)
173079.fig.004b
(b) 4T XOR (4T)
173079.fig.004c
(c) XOR (3T)
173079.fig.004d
(d) XOR-XNOR (3T)