| 摘要 |
A logical circuit includes an inverter circuit for judging fluctuations of a potential at a potential detecting point, a power-source potential step-down circuit for supplying a potential between a potential at a switching point of the inverter circuit and a high-level power-source potential, from an output end thereof, a MOS transistor of P-channel for controlling in conductivity a location between the output end of the power-source potential step-down circuit and the potential detecting point, and a group of MOS transistors of N-channel for controlling in conductivity a location between the potential detecting point and a ground power source in accordance with an input signal.
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