Design of High-Speed High-Density Parallel Adders and Multipliers Using Regenerative Pass-Transistor Logic

摘要

Regenerative Pass-transistor Logic (RPL), a modular dual-rail circuit technique for high speed logic design that gives reasonably low power consumption, was discussed in previous work. RPL combines advantages of both the compact size of CPL and the full voltage-swing of DPL, and gives reasonably high performance concerning both speed and power consumption. In this paper, the application and design technique of RPL on larger logic circuits and systems are reported. Parallel adders and Booth multipliers with different sizes and structures are used as examples to evaluate the functionality of the RPL gates and full adder. In addition, there is less signal skew in RPL circuits than in conventional CPL circuits when an arrangement of single-rail to dual-rail signal conversion is performed. And, RPL is found to be useful in design of high speed and high density parallel adders and multipliers.