Patent ID: 6075401
Filing Date: 2000-06-13
Classification: H03K

Abstract:
A switching circuit comprising:a forward switching element comprising a first P channel field effect transistor (FET) and a first N channel FET, having source electrodes connected to an input terminal of said forward switching element, and having drain electrodes connected to an output terminal of said forward switching element;an inverse switching element comprising a second P channel FET and a second N channel FET, having source electrodes connected to said output terminal of said forward switching element, and having drain electrodes connected to an output terminal of said inverse switching element;a first level shift circuit for receiving a switching control signal and for generating an internal switching signal in phase with the switching control signal and larger in amplitude than the switching control signal, wherein the internal switching signal is inputted to a gate electrode of one of said first P channel FET and said first N channel FET in said forward switching element, and the internal switching signal is inputted to a gate electrode on one of said second P channel FET and said second N channel FET in said inverse switching element; anda second level shift circuit for receiving the switching control signal and for generating an inverted internal switching signal opposite in phase from the switching control signal, and larger in amplitude than the switching control signal, wherein the inverted internal switching signal is inputted to a gate electrode of one of said first P channel FET and said first N channel FET in said forward switching element, and the inverted internal switching signal is inputted to a gate electrode of one of said second P channel FET and said second N channel FET in said inverse switching element, the internal switching signal being applied to gate electrodes of FETs in said forward switching element and in said inverse switching element having opposite channel polarities, and the inverted internal switching signal being applied to gate electrodes of FETs in said forward switching element and in said inverse switching element having opposite channel polarities.