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General Information
Prof. Wael Badawy
Department of Computing and Information Systems Umm Al Qura University, Canada
I'm happy to take on the position of editor in chief of IJCTE. We encourage authors to submit papers concerning any branch of computer theory and engineering.
IJCTE 2011 Vol.3(5): 608-616 ISSN: 1793-8201
DOI: 10.7763/IJCTE.2011.V3.379

Pass Transistor Based Self-Checking Full Adder

Hamdi Belgacem, Khedhiri Chiraz, and Tourki Rached

Abstract—Self-checking designs will gain increasing interest in industrial applications if they satisfy the following requirements: high fault coverage and reduced hardware cost with reduced design effort. The aim of this work is to contribute to reach these requirements for the design of self-checking adders/ALUs. In this paper, we present efficient self-checking implementations for adder schemes using the dual duplication code. Among the known self-checking adder designs, the dual duplicated scheme has the advantage to be totally self-checking for single faults. The drawback of this scheme is that it requires generally the maximum hardware overhead. In this work, we propose a low cost implementation for self-checking adder. The proposed design is based on a novel differential XOR gate implemented in CMOS pass transistor logic, and performed with only four transistors.

Index Terms—Totally self-checking circuits; self-checking adder; differential XOR; CMOS Logic Styles; CMOS pass transistor logic.

Belgacem Hamdi is with the Electronic & microelectronic‟s LAB, Monastir, Tunisia. PH.D. in Microelectronics from INP Grenoble (France). Assistant Professor at ISSAT Sousse, Tunisia. His main areas of interest are: IC design, Test, Built In self Test, DFT tools, self-checking and Fault tolerant systems. (E-mail: belgacem.hamdi@issatgb.rnu.tn)
Chiraz Khediri is with the Electronic & microelectronic‟s LAB, Monastir. Pursuing PH.D. in Electronic & microelectronic design at Tunis University, Tunisia.
Tourki Rached is the director of the Electronic & microelectronic's LAB, Monastir. Professor at FS Monastir university (Tunisia) (E-mail: rached.tourki@fsm.rnu.tn)


Cite: Hamdi Belgacem, Khedhiri Chiraz, and Tourki Rached, "Pass Transistor Based Self-Checking Full Adder," International Journal of Computer Theory and Engineering vol. 3, no. 5, pp. 608-616, 2011.

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