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(Implementation of Current-Mode CMOS Multiple-Valued Logic Circuits)  

Seong, Hyeon-Gyeong (Dept.of Computer Information Engineering, Sangji University)
Han, Yeong-Hwan (Dept.of Computer Information Engineering, Sangji University)
Sim, Jae-Hwan (Dept.of Electronics Engineering, Inha University)
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Abstract
In this paper, we present the method transforming the interval functions into the truncated difference functions for multi-variable multi-valued functions and implementing the truncated difference functions to the multiple valued logic circuits with uniform patterns using the current mirror circuits and the inhibit circuits by current-mode CMOS. Also, we apply the presented methods to the implementation of circuits for additive truth table of 2-variable 4-valued MOD(4) and multiplicative truth table of 2-variable 4-valued finite fields GF(4). These circuits are simulated under 2${\mu}{\textrm}{m}$ CMOS standard technology, 15$mutextrm{A}$ unit current, and 3.3V power supply voltage using PSpice. The simulation results have shown the satisfying current characteristics. Both implemented circuits using current-mode CMOS have the uniform Patterns and the regularity of interconnection. Also, it is expansible for the variables of multiple valued logic functions and are suitable for VLSI implementation.
Keywords
Multiple Valued Logic; Multiple Valued Functions; Current-mode CMOS; Truncated difference functions;
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