Patent ID: 6236255
Filing Date: 2001-05-22
Classification: H03K

Abstract:
An output circuit comprising:an output terminal;a buffer circuit which includes a first circuit having a first input terminal, to which a first input signal is input, connected to a first power supply source, wherein said first circuit forms a first current path between said first power supply source and said output terminal in accordance with said first input signal and a second circuit having a second input terminal, to which a second input signal is input, connected to a second power supply source, wherein said second circuit forms a second current path between said second power supply source and said output terminal in accordance with said second input signal;a first constant voltage circuit which provides said first input signal to said first input terminal and causes current flowing on said first current path to be constant or substantially constant; anda second constant voltage circuit which provides said second input signal to said second input terminal and causes current flowing on said second current path to be constant or substantially constant.