Receiver for a switched signal on a communication line

摘要

The receiver has a comparator (31) with a current generator (22, 23) operated when a received signal is asserted to produce an input current and a reference current. A switch (35) in the comparator is responsive to the input current when the signal is de-asserted. An output unit responsive to the relative current values is supplied with power at a voltage lower than the difference between reference and ground voltages.