Input device

An input device comprising:

• a first reference terminal set at a first reference voltage;
• a second reference terminal set at a second reference voltage;
• a signal input terminal configured to receive an input signal;
• a signal output terminal configured to output a signal having a level corresponding to a state in which a voltage value of the input signal is higher or lower than a predetermined threshold value;
• a first MOS transistor having a drain electrically connected to the first reference terminal, a gate electrically connected to the signal input terminal, and a source;
• a second MOS transistor having a drain and a gate electrically connected to the first reference terminal, and a source;
• a first resistor having one end electrically connected to the source of the first MOS transistor, and the other end electrically connected to a first node;
• a second resistor having one end electrically connected to the source of the second MOS transistor, and the other end electrically connected to a second node;
• a first current source having one end electrically connected to the first node, and the other end electrically connected to the second reference terminal;
• a second current source having one end electrically connected to the second node, and the other end electrically connected to the second reference terminal;
• and
• a comparator circuit having a first input terminal electrically connected to the first node and set at the same voltage as the first node, a second input terminal electrically connected to the second node and set at the same voltage as the second node, and an output terminal, which is the signal output terminal, configured to output a signal having a level corresponding to a state in which a voltage of the first input terminal is higher or lower than a voltage of the second input terminal.