Patent attributes
A level shifter includes a pull-down circuit, a pull-up circuit, a protection circuit, and an output generator. The pull-down circuit is configured to receive input voltages, and generate bias voltages. The input voltages are associated with a voltage domain. The pull-up circuit is configured to receive a supply voltage and generate control voltages. The protection circuit is configured to receive reference voltages, and control the generation of the bias voltages and the control voltages. The output generator is configured to receive at least one of the reference voltages, and at least one of the bias voltages and the control voltages, and generate output voltages that are able to reach minimum and maximum voltage levels of another voltage domain. Further, the output voltages remain unaffected by variations in process, voltage, and temperature.
