Patent ID: 7436213

Claim:
A level shifter, comprising: first and second first-conductivity type transistors for signal input, the first and second first-conductivity type transistors respectively receiving at gates complementary first and second input signals generated using a first voltage supply as a power supply and having ends connected to a ground and the other ends connected to first and second nodes, respectively; cross-coupled first and second second-conductivity type transistors having ends connected to a second voltage supply and the other ends connected to the first and second nodes, respectively; a third second-conductivity type transistor provided between the first node and the gate of the second second-conductivity type transistor; a fourth second-conductivity type transistor provided between the second node and the gate of the first second-conductivity type transistor; third and fourth first-conductivity type transistors for signal input, receiving the first and second input signals, respectively, at gates and having ends connected to the ground and the other ends connected to gates of the second and first second-conductivity type transistors, respectively; an OFF leakage generation circuit formed by a fifth first-conductivity type transistor which has an end and gate connected to the ground and the other end connected to a third node; and a fifth second-conductivity type transistor having an end connected to the second voltage supply and the other end and gate connected to the third node, wherein the gates of the third and fourth second-conductivity type transistors are connected to the third node.