A BiCMOS dynamic carry look-ahead circuit with carry skip for high-speed arithmetic circuits

Abstract

A BiCMOS dynamic carry look-ahead circuit with carry skip that is free from race problems is presented for implementing a high speed arithmetic circuit. A 16-b full adder test circuit has been designed using a 2- mu m BiCMOS technology using the BiCMOS dynamic carry look-ahead circuit with carry skip. It shows more than five times improvement in speed as compared to the CMOS Manchester carry look-ahead circuit.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>