Patent ID: 9584101
Date: 2017-02-28
CPC Classifications: H03K

Claim:
1. A small-sized rapid transition Schmitt trigger circuit for use with a silicon-on-insulator process, comprising: a first NMOS transistor, a first PMOS transistor, a second NMOS transistor, a second PMOS transistor, and a PMOS/NMOS body control circuit; wherein, the PMOS/NMOS body control circuit comprises a plurality transistors connected such that, through turning on and off the plurality of transistors thereby changing threshold voltages of the first NMOS transistor and the first PMOS transistor, enables different flip-flop threshold voltages for input transitions from high electrical levels to low electrical levels and from low electrical levels to high electrical levels; wherein the PMOS/NMOS body control circuit is further configured to, through controlling voltages of body regions of the first NMOS transistor and the first PMOS transistor, enable the different flip-flop threshold voltages for the input transitions from high electrical levels to low electrical levels and from low electrical levels to high electrical levels; and wherein the PMOS/NMOS body control circuit is further configured to: if an input of the Schmitt trigger circuit is at a low electrical level, set a voltage of the body region of the first NMOS transistor to 0, and set a voltage of the body region of the first PMOS transistor to V