A new six-transistor CMOS XOR circuit with complementary output

Author

Vesterbacka, M.

Author_Institution

Dept. of Electr. Eng., Linkoping Univ., Sweden

Volume

2

fYear

1999

fDate

1999

Firstpage

796

Abstract

A new CMOS XOR circuit based on pass transistors is proposed. It uses only six transistors to produce both an XOR and the complementary XNOR function. The circuit has full voltage-swing and negligible static power dissipation. A drawback is that the transistors need to be ratioed due to a feedback structure. Simulation results for the new circuit compared to simulation results for a reference XOR circuit indicated that the energy consumption was similar for the circuits. However, the propagation delay was 50% longer for the new circuit, due to the feedback structure. The main advantage of the new circuit was the reduction in device count from eight to six transistors

Keywords

CMOS logic circuits; circuit feedback; delays; logic gates; complementary XNOR function; complementary output; energy consumption; feedback structure; full voltage-swing; negligible static power dissipation; pass transistors; propagation delay; six-transistor CMOS XOR circuit; CMOS logic circuits; Circuit simulation; Delay; Energy consumption; Feedback circuits; Inverters; MOSFET circuits; Power dissipation; Power engineering and energy; Threshold voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. 42nd Midwest Symposium on

Conference_Location

Las Cruces, NM

Print_ISBN

0-7803-5491-5

Type

conf

DOI

10.1109/MWSCAS.1999.867755

Filename

867755