the invention relates to an integrated bus signal hold cell that is coupled with a bus line via a common input / output , and that has at least two inverters for holding the last state of the bus line . the outputs of the inverters are coupled with each other &# 39 ; s inputs , respectively . the input of the first inverter is coupled with the input / output . the output of the second inverter is coupled with the input / output . an additional input is provided via which the bus signal hold cell can be charged with a defined test signal . the invention also relates to an integrated bus system and a method for driving a bus signal hold cell and a bus system .