Patent ID: 8427798

Claim:
A semiconductor integrated circuit device, comprising: a power source circuit that is connected to a terminal of a first high potential side power source and that outputs a voltage of a second high potential side power source; an output transistor that includes a first terminal, a second terminal that is connected to a terminal of a low potential side power source, and a control terminal and that outputs an output signal from the first terminal to an output terminal; a first diode that includes a cathode connected to the terminal of the first high potential side power source and an anode connected to the output terminal; a connection circuit that is connected between a terminal of the second high potential side power source and the terminal of the low potential side power source, and in which a current source and a capacitor are arranged in a cascade connection; and a logic circuit to which a signal obtained from a connection node of the current source and the capacitor and a control signal that controls on/off operations of the output transistor are inputted and which outputs a signal obtained by a logic operation to the control terminal of the output transistor.