pulling the input differential voltage pair din u2032 and dip u2032 up the output circuit 320 then takes the input differential voltage pair din u2032 and dip u2032 and pulls the output voltage vo 1 u2032 high or low the detailed description of the input circuit 310 is explained as follows in the input circuit 310 when the common voltage vcom u2032 is lower than the reference voltage vr u2032 the switches 363 and 364 are turned on to transmit the input differential voltage pair din and dip to the source followers 342 and 341 in the level adjustment circuit 340 respectively meanwhile the switches 361 and 362 are turned off the transistors 346 and 344 in the source followers 342 and 341 then pulls the voltages din and dip up respectively by amounts equal to the gate drain cross voltages of the transistors 346 and 344 the pulled up input differential voltage pair din u2032 and dip u2032 is then transferred to the first stage amplifier 370 in the output circuit 320 in the input circuit 310 when the common voltage vcom u2032 is not lower than the reference voltage vr u2032 the switches 361 and 362 are turned on to transmit the voltage din and dip as the voltage din u2032 and dip u2032 directly to the output circuit 320 meanwhile the switches 363 and 364 are turned off so that the level adjustment circuit 340 will not receive the input differential voltage pair din and dip in the output circuit 320 the first and second stage.