Patent ID: 6133777
Filing Date: 2000-10-17
Classification: H03K

Abstract:
A selector circuit for switching to a first voltage or to a second voltage as a function of a control signal, the selector circuit comprising:a first switch circuit receiving the first voltage and the control signal and generating, at an output, either the first voltage when the control signal is in a first state or a first reference voltage when the control signal is in a second state;a second switch circuit receiving the second voltage and the control signal and generating, at an output, either the second voltage when the control signal is in the second state or the first reference voltage when the control signal is in the first state;a first MOS transistor of a first type having a source connected to the output of the first switch circuit, having a gate connected to the output of the second switch circuit, and having a drain connected to a well thereof; anda second MOS transistor of the first type having a source connected to the output of the second switch circuit, having a gate connected to the output of the first switch circuit, and having a drain connected to the well thereof and to the drain of the first MOS transistor.