Patent ID: 7663411

Claim:
A semiconductor device with a logic circuit, the logic circuit comprising first and second power supply lines supplied respectively with first and second power supply voltages, first and second input nodes supplied respectively with first and second input signals, first and second output nodes, first and second control nodes supplied respectively with first and second control signals, the first control signal being opposite in phase to the second control signal, a first transistor circuit having a first transistor of a first channel type and coupled to the first power supply line, the first input node and the first output node, a second transistor circuit having a second transistor of a second channel type and coupled to the second power supply line, the second input node and the second output node, a third transistor of the second channel type coupled between the first and second output nodes and having a gate connected to the first control node, and a fourth transistor of the first channel type connected between the first and second output nodes and having a gate connected to the second control node, each of the third and fourth transistors being larger in threshold voltage in absolute value than each of the first and second transistors.