Energy and Area Efﬁcient Three-Input XOR/XNORs With Systematic Cell Design Methodology
Abstract— Efﬁcient three-input XOR/XNOR circuits as the most signiﬁcant blocks of digital systems with a new systematic cell design methodology < Final Year Projects 2016 > SCDM in hybrid-CMOS logic style. SCDM, which is an extension of CDM, plays the essential role in designing efﬁcient circuits. At ﬁrst, it is deliberately given priority to general design goals in a base structure of circuits. This structure is generated systematically by employing binary decision diagram. After that, concerning high ﬂexibility in design targets, SCDM aims to speciﬁc ones in the remaining three steps, which are wise selections of basic cells and amend mechanisms, as well as transistor sizing. In the end, the resultant three-input XOR/XNORs enjoy full-swing and fairly balanced outputs.They perform well with supply voltage scaling, and their critical path contains only two transistors.
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