LEVEL SHIFT CIRCUIT HAVING PLURAL LEVEL SHIFT STAGE STEPWISE CHANGING POTENTIAL RANGE WITHOUT APPLYING LARGE POTENTIAL DIFFERENCE TO COMPONENT TRANSISTORS

摘要

The level shift circuit has a plurality of level shift stages 10/11/12 connected in series between the input node N10 and the output node N11 to generate an output signal S13, and the first level shift stage ( 10), the intermediate level shift stage 11 and the final level shift stage 12 are applied to the positive power level Vcc from the input signal S10 that varies between the positive power level VCC and the ground level GND. A first intermediate signal S11 varying between one negative level (-Vpp / 2), a second intermediate signal varying between ground level GND and a first negative level (-Vpp / 2) from the first intermediate signal (S12), by generating an output signal (S13) that varies between the second negative level (-Vpp) and the ground level, which is twice the absolute value of the first negative level, the field effect transistors 10b-10e / 11a as components. -11b / 12b-12e) is the positive power level and the second negative It prevents a large potential difference between the probe level.