Current-mode level restoration: circuit for multi-valued logic

Abstract

The multi-valued logic circuits provide very small chip size, higher speed, and a small number of interconnections. However, the main drawback of these circuits is the lower noise margin and it is necessary to restore the nominal levels of the signal after a certain number of cascaded stages. A new current-mode CMOS restoration circuit is presented and evaluated.

A flexible current‐mode classifier circuit and its applications

“…As shown in Figure 2, the CC can be constructed using two threshold circuits and a current mirror which acts as a subtractor. There are many techniques in the literature for CMOS realization of current comparator and threshold circuits [14,15]. The I-O characteristic of the threshold circuit is shown in Figure 3.…”

“…The paper is organized as follows. In Section 2 a new current-mode CMOS Core Circuit (Core Cell) (CC) using the threshold gate introduced in [14] is proposed; as a byproduct a deficiency of this gate is exhibited and corrected. Moreover, how an n ×m-dimensional classifier circuit with n inputs and m outputs using CCs connected in parallel can be realized is specified.…”

Linear Logic Synthesis of Multi-Valued Sequential Circuits

“…As a result of investigations, we have defined primary application domain of this tool that is current circuits of random valuedness. The Boolean algebra is not convenient to synthesize multi-valued digital circuits, so linear algebra is not an opponent to the Boolean algebra despite the specific nature of the logic synthesis process and multivalued digital circuits circuitry [11][12][13][14][15][16][17][18][19]; it is rather an addition to Boolean algebra .…”