Very High Speed Current-Mode Logical Gates

Very High Speed Current-Mode Logical Gates

Keivan Navi, Mohsen Kazemi Parsa, Arash Ghorbannia Delavar

Abstract

In this paper after studying and analyzing BiCMOS and CMOS logical gates, we have achieved some advanced BiCMOS circuits for the same logical gates. In all of our designs, we used threshold detectors and voltage to current converters. In this new method, some parts of the conventional BiCMOS current-mode circuits have been eliminated without any changes in the logical functionality of the circuits, and some optimum circuits based on this logic family have been introduced. In the proposed circuits, we have obtained considerable speed gain and a remarkable reduction in transistor count.

Keywords

BiCMOS, multiple-valued logic, VLSI, driving large capacitive load