Patent ID: 6291857
Filing Date: 2001-09-18
Classification: H03K

Abstract:
A semiconductor device comprising:a first MOS transistor for signal processing formed in a SOI layer of SOI structure, said first MOS transistor having (i) a gate that receives a first input signal expressing first/second logic, (ii) a first terminal from which an output signal based on said first input signal is outputted, (iii) a second terminal turning on/off in response to said first/second logic expressed by said first input signal, respectively, and (iv) a body region; anda first body region potential shifting means changing a first operation of bringing said body region of said first MOS transistor into a floating state, to a second operation of said body region potential shifting toward said second terminal potential, between a first transition in which said first input signal transitions from said second logic to said first logic, and a second transition in which said first input signal transitions from said first logic expressed by said first input signal in said first transition, to said second logic.