Semiconductor output circuit
First Claim
1. A semiconductor output circuit comprising:
- an insulated gate transistor including a first terminal, a second terminal and a gate terminal, a conductive state of said insulated gate transistor being controlled by a drive circuit connected to said gate terminal;
a capacitive element and a first resistor connected in series between said second terminal and said gate terminal;
a second resistor connected between said gate terminal and said first terminal;
said insulated gate transistor having a cell area formed on a semiconductor substrate, in which a plurality of unit cells each defining a unit transistor connected between said first and second terminals are laid out, said second resistor having such a resistance that all of unit transistors defined by said unit cells are turned on uniformly when electrostatic discharge is applied to said first or second terminal.
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Accused Products
Abstract
The semiconductor output circuit of the invention has an insulated gate transistor including a first terminal, a second terminal and a gate terminal, a conductive state of the insulated gate transistor being controlled by a drive circuit connected to the gate terminal, a capacitive element and a first resistor connected in series between the second terminal and the gate terminal, and a second resistor connected between the gate terminal and the first terminal. The insulated gate transistor has a cell area formed on a semiconductor substrate, in which a plurality of unit cells each defining a unit transistor connected between the first and second terminals are laid out. The second resistor has such a resistance that all of the unit transistors defined by the unit cells are turned on uniformly when electrostatic discharge is applied to the first or second terminal.
15 Citations
7 Claims
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1. A semiconductor output circuit comprising:
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an insulated gate transistor including a first terminal, a second terminal and a gate terminal, a conductive state of said insulated gate transistor being controlled by a drive circuit connected to said gate terminal;
a capacitive element and a first resistor connected in series between said second terminal and said gate terminal;
a second resistor connected between said gate terminal and said first terminal;
said insulated gate transistor having a cell area formed on a semiconductor substrate, in which a plurality of unit cells each defining a unit transistor connected between said first and second terminals are laid out, said second resistor having such a resistance that all of unit transistors defined by said unit cells are turned on uniformly when electrostatic discharge is applied to said first or second terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification