Patent ID: 8610464

Claim:
An inverter circuit, comprising: an input transistor and a feedback transistor, each comprising a source, a drain and a gate that is provided to control a channel between the source and the drain, and each having a gate-source junction, wherein the input transistor conducts between the source and the drain if a gate-source voltage that is applied between the gate and the source is more positive than a positive threshold voltage, and does not conduct between the source and the drain otherwise, wherein the feedback transistor does not conduct between the source and the drain if a gate-source voltage that is applied between the gate and the source is more negative than a negative threshold voltage, and conducts between the source and the drain otherwise, a component that generates a voltage drop between the source of the feedback transistor and the drain of the input transistor, a connection between the drain of the input transistor and the gate of the feedback transistor, wherein the source of the input transistor is to be connected to a first voltage level of a supply voltage, wherein the drain of the feedback transistor is to be connected to a second voltage level of the supply voltage, wherein the gate of the input transistor is provided for an input signal, wherein the drain of the input transistor is provided for an output signal, a buffer circuit forming an output stage, wherein the buffer circuit comprises an inverter circuit comprising: a second input transistor and a second feedback transistor, each comprising a source, a drain and a gate that is provided to control a channel between the source and the drain, and each having a second gate-source junction, wherein the second input transistor conducts between the source and the drain if a gate-source voltage that is applied between the gate and the source is more positive than a positive threshold voltage, and does not conduct between the source and the drain otherwise, wherein the second feedback transistor does not conduct between the source and the drain if a gate-source voltage that is applied between the gate and the source is more negative than a negative threshold voltage, and conducts between the source and the drain otherwise, a second component that generates a voltage drop between the source of the second feedback transistor and the drain of the second input transistor, a second connection between the drain of the second input transistor and the gate of the second feedback transistor, wherein the source of the second input transistor is to be connected to a first voltage level of the supply voltage, wherein the drain of the second feedback transistor is to be connected to a second voltage level of the supply voltage, wherein the gate of the second input transistor is provided for a second input signal, and wherein the drain of the second input transistor is provided for a second output signal.