INPUT CIRCUIT

An input circuit includes a first P-channel MOS transistor including a first terminal supplied with a high-potential power supply voltage and a second terminal coupled to a first node, a second P-channel MOS transistor including a first terminal coupled to the first node and a second terminal coupled to a second node, a first N-channel MOS transistor including a first terminal coupled to the second node and a second terminal coupled to a third node, and a second N-channel MOS transistor including a first terminal coupled to the third node and a second terminal supplied with a low-potential power supply voltage. An input signal is supplied to gate terminals of the P-channel MOS transistors and the N-channel MOS transistors. A control circuit controls the potential at the first node and the potential at the third node based on the input signal and the potential at the second node.