Patent ID: 6710626
Filing Date: 2004-03-23
Classification: G06F

Abstract:
A transmitter for a two-wire, differential databus on which a dominant state can be impressed by means of the transmitter in an active state of the transmitter, and which is in a recessive state when all transmitters connected to the databus are in a passive state, characterized in that the transmitter is provided with a capacitance (6) and switching means (7,8,9,10) by means of which the capacitance (6) can be alternatively coupled to an electric source (11) or between the two databus lines (1, 2), and in that the switching means (7,8,9,10) charge the capacitance (6) by means of the electric source (11) during periods when the transmitter is in a passive state, couple the capacitance (6) between the two databus lines (1, 2) during periods when the transmitter is in an active state, and in that a first diode (16) is coupled between a first terminal of the capacitance (6) and the first line (1) of the databus, and a second diode (17) is coupled between a second terminal of the capacitance (6) and the second line (2) of the databus.