Patent ID: 6480034
Filing Date: 2002-11-12
Classification: H03K

Abstract:
A MOS-type semiconductor integrated circuit comprising:a logic circuit operable on a voltage between a predetermined high-potential supply voltage and a low-potential supply voltage, and a switch circuit including a first MOS transistor of a first conductivity type and a second MOS transistor of a second conductivity type for controlling transfer of an output of said logic circuit with complementary signals, wherein said logic circuit includes a first node to be connected to a first current path including said first MOS transistor, a second node to be connected to a second current path including said second MOS transistor, and a third current path comprising at least a first normally-on barrier MOS transistor inserted between said first and second nodes; and wherein at least one of said first and second current paths of said switch circuit includes at least a second normally-on barrier MOS transistor of the same conductivity as that of at least one of said first and second MOS transistors included in said first current path or second current path, respectively.