![]() The design explained in this paper is simulated with Cadence 90nm technology. the transistor-level implementations of 3-input XOR gate in Pseudo NMOS, con. ![]() the XOR logic has been selected for design. The use of transistors for the construction of logic gates depends upon their utility as fast switches. CMOS circuits have higher static power dissipation at lower temperatures. ![]() Since the design for XOR logic, is useful for variety of applications such as Data encryption, Arithmetic circuits, Binary to Gray encoding etc. This design consumes 50% less power than that of conventional XOR logic design with CMOS technology. The proposed methodology consists of Pass transistor logic and Single feedback topology. In these circumstances, the gate-to-channel voltage of the transistor will not be high enough to turn the transistor fully on, and the drive to the output will be weak, and (depending on the load) might not be sufficient to drive the output near enough to ground or Vdd for any following logic to work properly. Simulations have been performed on the circuits along with 10 other XOR gates. Figure below shows the implementation of XOR function using pass transistors. This paper proposes a new set of low power 4-transistor XOR/XNOR gates. The conventional CMOS design for XOR logic can be possible with 8 or more than 8 transistors, with the methodology discussed in this paper, the same design for XOR logic can be made possible with 6 transistors. The truth table of XOR gate is as shown in Table below. In similar way, logic can be implemented in other styles as well, with the difference in number of transistors required. As CMOS technology supports inversion logic designs NAND & NOR structures are useful for converting any logic equation into physical level design that comprises of PMOS and NMOS transistors. For any digital logic design the power consumption depends on Supply voltage, number of transistors incorporated in circuit and scaling ratios of the same. low power consumption can be easily acquired. With advent of technology scaling, the prime objective of design i.e.
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