Voltage level conversion circuit

The present invention provides a voltage level converting circuit may be relatively low so that a low power supply voltage VDD2 converting an input signal having a logic high voltage level corresponding to the power supply voltage VDD1 having a logic low voltage level corresponding to the power supply voltage VDD2 voltage level of the output signal of the converting circuit operation. The conversion circuit converts an input signal having a system for VDD2 VDD1 system signal level converter circuit section and a negative level conversion so that the inverted output of the input signal, the level converting unit configured VDD1 two negation circuit system only the input and output level converter unit two high voltage transistors, a signal having a logic low voltage level corresponding to the power supply voltage VDD2 to the two low-voltage resistance transistor input level converting portion, further to the level converting unit level negative input circuit input signal only after the level conversion by the level conversion portion.