Date of Graduation


Document Type


Degree Name

Master of Science in Electrical Engineering (MSEE)

Degree Level



Electrical Engineering


Scott C. Smith

Committee Member

Randy Brown

Second Committee Member

Alan Mantooth

Third Committee Member

Jia Di


Applied sciences, Asynchronous circuits, Bit-wise ncl, Bolean to mtncl, Cad tool design, Mtncl, Ncl


This thesis presents an implementation of a method developed to readily convert Boolean designs into an ultra-low power asynchronous design methodology called MTNCL, which combines multi-threshold CMOS (MTCMOS) with NULL Convention Logic (NCL) systems. MTNCL provides the leakage power advantages of an all high-Vt implementation with a reasonable speed penalty compared to the all low-Vt implementation, and has negligible area overhead. The proposed tool utilizes industry-standard CAD tools. This research also presents an Automated Gate-Level Pipelining with Bit-Wise Completion (AGLPBW) method to maximize throughput of delay-insensitive full-word pipelined NCL circuits. These methods have been integrated into the Mentor Graphics and Synopsis CAD tools, using a C-program, which performs the majority of the computations, such that the method can be easily ported to other CAD tool suites. Both methods have been successfully tested on circuits, including a 4-bit × 4-bit multiplier, an unsigned Booth2 multiplier, and a 4-bit/8-operation arithmetic logic unit (ALU)