Patent ID: 7498842
Filing Date: 2009-03-03
Classification: H03K

Abstract:
1. The design structure embodied in a machine readable medium used in a design process, the design structure comprising: a voltage level shifter circuit including an input stage operating in a domain of a first voltage supply receiving an input signal; said input stage including a first inverter receiving said input signal and providing a first inverted signal; said input stage including a second inverter receiving an inverted input signal and providing a second inverted signal; said input stage including a first transistor coupled between the first voltage supply and the first inverter, said first transistor receiving a control input of the second inverted signal; said input stage including a second transistor coupled between the first voltage supply and the second inverter, said second transistor receiving a control input of the first inverted signal; an output voltage level shifting stage coupled to the input stage, said output voltage level shifting stage operating in a domain of a second voltage supply, and providing an output signal having a voltage level corresponding to said second voltage supply and a logic value corresponding to said input signal, wherein the design structure, when read and used in the manufacture of a semiconductor chip produces a chip comprising the voltage level shifter circuit; and said output voltage level shifting stage including a first inverter, said first inverter of said output voltage level shifting stage being coupled between the second voltage supply and ground, and said second inverted signal being applied to said first inverter of said output voltage level shifting stage.