Title :
Analysis and synthesis of combinational pass transistor circuits
Author :
Pedron, Corrado ; Stauffer, André
Author_Institution :
Digital Syst. Lab., Swiss Fed. Inst. of Technol., Lausanne, Switzerland
fDate :
7/1/1988 12:00:00 AM
Abstract :
A method for analyzing a wide range of CMOS pass transistor circuits is presented. Based on concepts derived from analysis, synthesis algorithms are proposed. They have been implemented as a program called PAVOS which can solve relatively complex problems. A manual method is presented for handling simpler ones. An effective minimization of the circuit area is obtained by using incomplete transmission gates, i.e. gates composed of either PMOS or NMOS transistors, without degrading the circuit output signals. The specification or a circuit can contain high-impedance states and attractive don´t-cares called don´t-happen states. It is shown that well-known good-pass transistor circuits, which synthesize results from designers´ experience and intuition, can easily be obtained with the described methods. It is suggested that synthesis algorithms for all kinds of logics can be obtained by making small modifications on PAVOS
Keywords :
CMOS integrated circuits; circuit CAD; circuit analysis computing; combinatorial circuits; integrated logic circuits; logic CAD; CMOS; NMOS transistors; PAVOS; PMOS transistors; circuit area minimisation; combinational pass transistor circuits; computer aided design; logic CAD; logic IC; synthesis algorithms; CMOS logic circuits; Circuit synthesis; Digital systems; Laboratories; Logic circuits; Logic design; MOSFETs; Minimization; Network synthesis; Power dissipation;
Journal_Title :
Computer-Aided Design of Integrated Circuits and Systems, IEEE Transactions on
