Integrated circuit outputs with switched source followers to support variable output levels without dedicated supplies

A system comprising:

• an integrated circuit device comprising one or more input/output (I/O) pads;
• and
• at least one output circuit associated with at least one of the one or more I/O pads, each output circuit configured to level-shift an incoming signal received at the output circuit and generate an output signal having a voltage range different than a voltage range of the incoming signal, each output circuit comprising:
• an output driver configured to receive the incoming signal and generate the output signal at a specified voltage level;
• and
• a switched source follower coupled to the output driver, the switched source follower configured to receive the incoming signal and set the specified voltage level for the output driver.

A method comprising:

• receiving an incoming signal;
• and
• level-shifting the incoming signal to generate an output signal having a voltage range different than a voltage range of the incoming signal using an output circuit;
• wherein the output circuit comprises:
• an output driver that receives the incoming signal and generates the output signal at a specified voltage level;
• and
• a switched source follower coupled to the output driver, the switched source follower receives the incoming signal and sets the specified voltage level for the output driver.