Input buffer of an integrated semiconductor circuit

Abstract

An integrated semiconductor circuit having a first operating mode and a second operating mode has a plurality of input buffers. At least one of the input buffers serves for controlling a changeover between the operating modes. The input buffer for controlling the changeover between the operating modes has a driver circuit with an inverter circuit with low static leakage currents, which can be operated as intended in the first and second operating modes. The remaining input buffers each have a differential amplifier circuit, which is switched off in the second operating mode. A reduced minimum current consumption of the semiconductor circuit is achieved by virtue of the inverter circuit, which switches reliably even in the case of low supply voltages.

Dependencies are inferred from the claim text.