| 摘要 |
Provided is an input circuit having hysteresis characteristics that is capable of operating in a wide range of power supply voltage conditions while suppressing power supply voltage dependence of a hysteresis voltage and a response speed. The input circuit is provided with: a circuit for obtaining a small hysteresis voltage under the condition of low power supply voltage (formed of PMOS transistors (101 to 103) and an inverter (501)); and a circuit for obtaining a large hysteresis voltage under the condition of low power supply voltage (formed of PMOS transistors (101 and 104) and the inverter (501)).
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