PROTECTION CIRCUIT AND SEMICONDUCTOR DEVICE

Provided are a protection circuit and a semiconductor device that improve operational reliability. The protection circuit includes first to third power lines, a first resistor, a first capacitor, a first transistor, and first to third inverters. The first resistor is connected between the first power line and the first node. The first capacitor is connected between the first node and the third power supply line. The first transistor is connected between the second power line and the third power line. The first inverter has a first power supply terminal connected to the second power supply line, a second power supply terminal connected to the third power supply line, and an input terminal connected to the first node. The second inverter has a first power supply terminal connected to the second power line, a second power supply terminal connected to the third power line, and an input terminal connected to the output terminal of the first inverter. The third inverter has a first power supply terminal connected t