Patent ID: 8106686

Claim:
An integrated circuit, comprising: an input terminal for receiving an input signal; a further input terminal for receiving a further input signal having a level different from a level of the input signal; an output terminal for providing an output signal; a switching unit comprising a first controllable switch and a second controllable switch connected in series between the input terminal and the output terminal such that the output signal depends upon the input signal when the first and second controllable switches are both closed; and a further switching unit comprising a third controllable switch connected between the further input terminal and the output terminal such that the output signal depends upon the further input signal when the third controllable switch is closed; wherein the integrated circuit is operated in a first and a subsequent second operating state, wherein the switching unit is implemented such that the first controllable switch of the switching unit is controlled to be conductive in the first and second operating states, the second controllable switch of the switching unit is controlled to be conductive in the first operating state and non-conductive in the second operating state, and, in the first operating state, the output signal is provided in dependence on a level of the input signal, and wherein the further switching unit is implemented such that the third controllable switch of the further switching unit is controlled to be non-conductive in the first operating state and conductive in the second operating state, and, in the second operating state, the output signal is provided in dependence on a level of the further input signal; and a control circuit for controlling the second controllable switch of the switching unit and the third controllable switch of the further switching unit such that the second controllable switch is conductive when the third controllable switch is non-conductive and the third controllable switch is conductive when the second controllable switch is non-conductive.