DESIGN AND APPLICATION OF PIPELINED DYNAMIC CMOS TERNARY LOGIC AND SIMPLE TERNARY DIFFERENTIAL LOGIC

Abstract

New dynamic CMOS ternary logic circuits, which can be used to form a pipelined system with the nonoverlapped two-phase clocks, are proposed and investigated. All the proposed new dynamic ternary gates do not have dc power dissipations and have full voltage swings. For complex ternary logic, a new circuit structure called the simple ternary differential logic (STDL) is also proposed and analyzed. The design procedure of the STDL is developed for the optimal implementation. An experimental chip has been fabricated in 1.2-mum CMOS process and tested, which successfully verifies part of the logic functions of the proposed new dynamic ternary logic. A new binary pipelined multiplier is designed by using the proposed dynamic ternary logic circuits in the interior of the multiplier in the coding of radix-2 redundant positive-digit number. The new structure has the advantages of higher operating frequency as well as much less latency and total device count as compared with the conventional binary parallel pipelined multiplier. It has been shown that all the developed dynamic ternary logic circuits have certain advantages in speed, power dissipation, chip area, and clock complexity over other dynamic ternary logic circuits. Moreover, the pipelined structure is free from race problems.