Patent ID: 6756814
Filing Date: 2004-06-29
Classification: H03K

Abstract:
A logic circuit comprising:a logic gate including a first power supply terminal to which a high-potential-side power is supplied, a second power supply terminal to which a low-potential-side power is supplied, and a transistor which can operate by power supplied from said first and second power supply terminals; an n-channel type first transistor provided between said second power supply terminal and said low-potential-side power and capable of interrupting power supply to said logic gate in accordance with an input control signal; and a p-channel type second transistor provided between said high-potential-side power and an output node of said logic gate and capable of fixing the output node of said logic gate to the high level relating to said power supply interrupting operation of said first transistor, wherein a threshold voltage of each of said first and second transistors is set to be higher than that of the transistor as a component of said logic gate.