Analog multiplexer

A circuit, comprising:

• an NMOS switching module connected between an input and an output;
• a PMOS switching module connected between the input and the output;
• the NMOS and PMOS switching modules connected in parallel;
• a first control module powered from a first power supply voltage node and configured to control a conducting state and a non-conducting state of the NMOS switching module;
• a second control module powered from a second power supply voltage node and configured to control a conducting state and a non-conducting state of the PMOS switching module;
• a voltage selection circuit configured to deliver a supply voltage to the second power supply voltage node equal to a greater one of the voltages at the first power supply voltage node, the input and the output.

A circuit, comprising:

• a plurality of inputs;
• an output;
• and
• a switching circuit coupled between each input and said output, wherein each switching circuit comprises:
• an NMOS switching module connected between one of the inputs and the output;
• a PMOS switching module connected between said one of the inputs and the output;
• the NMOS and PMOS switching modules connected in parallel;
• a first control module powered from a first power supply voltage node and configured to control a conducting state and a non-conducting state of the NMOS switching module;
• a second control module powered from a second power supply voltage node and configured to control a conducting state and a non-conducting state of the PMOS switching module;
• and
• a voltage selection circuit configured to deliver a supply voltage to the second power supply voltage node equal to a greater one of the voltages at the first power supply voltage node, the one of the inputs and the output.