To solve the following problem: when a voltage source with a high current supply capability is used other than a CMOS driver in the case of generating a pulse required for a voltage other than a power supply voltage VDD and a GND level, circuit scale as the voltage source is expanded or power consumption is increased for consumption by the voltage source.

A CMOS inverter circuit 43 composed of a P-ch. MOS transistor 41 and an N-ch. MOS transistor 42 is used as a fundamental circuit; and between a GND side circuit terminal of the CMOS inverter circuit 43 and a GND, an N-ch. MOS transistor 44 with a drain and a gate connected (diode-connected) in common, is connected. Among the CMOS inverter circuit 43, the N-ch. MOS transistor 44 and a power source VDD, an N-ch. MOS transistor 45 which operates as a current source, is connected.