Level-shift circuits compatible with multiple supply voltage

A level-shift circuit, receiving a supply voltage and an input signal to generate a first inverse output signal, a first output signal, a second inverse output signal and a second output signal, the level-shift circuit comprises:

• a pre-stage voltage conversion circuit, comprising:
• a first voltage protection module, coupled to the supply voltage and generating an inner conversion voltage;
• and
• a first voltage conversion module, coupled to the first voltage protection module, receiving the input signal, and converting the input signal into a pre-stage output signal according to the inner conversion voltage;
• and
• a post-stage voltage conversion circuit, coupled to the pre-stage voltage conversion circuit, the post-stage voltage conversion circuit comprising:
• a second voltage protection module, generating the first inverse output signal, the first output signal, the second inverse output signal, and the second output signal,
• wherein the pre-stage voltage conversion circuit and the post-stage voltage conversion circuit comprise a plurality of transistors with a punch-through voltage, wherein the level-shift makes the stress of the transistors less than the punch-through voltage when the supply voltage is greater than the punch-through voltage, and the level-shift circuit outputs the first inverse output signal, the first output signal, the second inverse output signal, and the second output signal without converting the voltage swing when the supply voltage is less than the punch-through voltage.