Patent ID: 6452418
Filing Date: 2002-09-17
Classification: H03K

Abstract:
A level shifter comprising:a driver circuit that is configured to provide a first current and an equal and opposite second current from a first set of supply voltage potentials, and a driven circuit, operably coupled to the driver circuit, that is configured to provide an output signal corresponding to a second set of supply voltage potentials, wherein the first set of supply voltage potentials are substantially independent of the second set of supply voltage potentials the driven circuit includes: a first resistor tough which the first current flows between a first voltage source of the second set of supply voltage potentials and the driver circuit, and a second resistor through which the second current flows between a second voltage source of the second set of supply voltage potentials and the driver circuit; and, a state of the output signal is dependent upon voltage drops across the first and second resistors.