| 主权项 |
1. An electrostatic protection circuit that is connected via a first node to a first terminal to which a first potential is supplied, and is connected via a second node to a second terminal to which a second potential lower than the first potential is supplied, the electrostatic protection circuit comprising:
a first impedance element, one end thereof being connected to one of the first node and the second node, and the other end thereof being connected to a third node; a clamp element, one end thereof being connected to the third node, and the other end thereof being connected to the other of the first node and the second node; a first transistor that is connected between the one of the first node and the second node and a fourth node, and turns on in accordance with an increase in voltage generated in the first impedance element; at least one impedance element that is connected between the fourth node and the other of the first node and the second node, and includes a second impedance element; a second transistor that turns on in accordance with an increase in voltage generated in the second impedance element, and increases current flowing in the first impedance element; and a discharge circuit that allows current to flow from the first node to the second node when the second transistor is in an on state. |
