Electronic Design Automation

2.4. Integrated Circuit Design Techniques

As modern digital systems demand more from circuit implementations, many new circuit technologies have emerged. These circuit technologies improve in one or more of the following areas: simplify implementation complexity, reduce silicon area, improve performance, and reduce power consumption. In this subsection, we highlight some of the techniques widely used in practice.

2.4.1. Transmission-gate/pass-transistor logic

Transmission-gate/pass-transistor logic simplifies circuit implementations and yet does not require power supply to its circuit blocks. Consider a 2-to-1 multiplexer [Karim 2007]. Figure 2.26 compares a NAND gate implementation with a transmission-gate based implementation and a pass-transistor ...