Magnitude comparator, magnitude comparator based content addressable memory cell, and non-equal bin width histogrammer

摘要

A magnitude comparator for comparing magnitude of a first data and a second data is disclosed. The first data and the second data are both binary data. The magnitude comparator includes many non-least comparator cells and a P-channel transistor. Each of the non-least comparator cells includes a first transistor, a second transistor, a third transistor and a fourth transistor. The drain of the second transistor is electrically connected to the source of the first transistor, and the source of the second transistor is electrically connected to a ground terminal. The third transistor electrically connects the first transistor, and the fourth transistor electrically connects the first transistor and the third transistor. The source of the P-channel transistor electrically connects a supply terminal, the gate of the P-channel transistor electrically connects the ground terminal, and the drain of the P-channel transistor electrically connects the third transistor of the first comparator cell.