US 6,650,167 B1 · Multi-level/single ended input level shifter circuit

Abstract

Systems and methods are disclosed for a multi-level level shifter circuit having a single ended input and adapted to translate one or more signals from one voltage level to another. More specifically, the present invention provides a level shifter that doesn't require a complementary input or an additional power supply if the complementary signal isn't available. One embodiment of the level shifter circuit device having a single-ended input comprises at least three transistor devices. The first transistor device is coupled to at least the input and is adapted to have a threshold voltage less than 0V. The second transistor device is coupled to at least the first transistor device, while a level shifter transistor device is coupled to at least the first and second transistor devices.

Claims8

Dependent claims

A level shifter circuit having a single-ended input comprising:

a first native NMOS transistor device coupled to at least the input and adapted to have a threshold voltage less than 0V;
a second transistor device coupled to at least said first transistor device;
and
a level shifter transistor device coupled to at least said first and second transistor devices.

1 more element

Dependencies are inferred from the claim text.

Multi-level/single ended input level shifter circuit

Life of this patent

Multi-level/single ended input level shifter circuit

Life of this patent

Abstract

Claims8