Input circuit and method for the operation thereof

An input circuit comprising:

• an input;
• a voltage divider with a center tap;
• a time delay element;
• a control device;
• and
• at least one switch,
• wherein a first pole of the voltage divider forms the input of the input circuit, a signal input of the time delay element is located at the center tap of the voltage divider, and an output of the time delay element is connected to the control device, and
• wherein the at least one switch is controlled by the control device and acts on the signal input, the control device is connected to the time delay element via a clock line, and a delay time of the time delay element is influenced by a clock signal transmitted via the clock line.

A method for operating an input circuit, the input circuit having an input, a voltage divider with a center tap, a time delay element, a control device, and means for the high level and low level connection,

• wherein a first pole of the voltage divider forms the input of the input circuit,
• a signal input of the time delay element is located at the center tap of the voltage divider and an output of the time delay element is connected to the control device, and
• the means for the high level and low level connection are controlled by the control device and act on the signal input, the method comprising:
• transmitting a clock signal via a clock line, which connects the control device to the time delay element, wherein the clock signal influences a delay time of the time delay element.