INPUT LEVEL CONVERSION CIRCUIT

摘要

PROBLEM TO BE SOLVED: To obtain an input level conversion circuit that can receive a high level high potential input higher than a withstanding voltage of components in the case that a level of an input signal having an amplitude ranging from a low potential level to a high level high potential is converted into a level of a signal having an amplitude ranging from a low level high potential to the low potential level. SOLUTION: The input level conversion circuit has a DC regenerating circuit consisting of a 1st PMOS transistor(TR), a capacitor 11 that is connected between an output terminal of the DC regenerating circuit and a low level power supply terminal, a 1st inverter INV1 whose input terminal connects to an output terminal of the DC regenerating circuit and consisting of a 2nd PMOS TR P2 and a 1st NMOS TR P1, and a 2nd inverter INV2 whose input terminal connects to an output terminal of the 1st inverter INV 1 and consisting of a 3rd PMOS TR P3 and a 2nd NMOS TR N2, and an output terminal of the 2nd inverter INV2 is used for an output terminal of the input level conversion circuit.