Bus driver with data dependent drive strength control logic

A transceiver circuit for transmitting a data signal over a communications bus at a predefined bit rate includes a transmitter. The data signal is a digital signal having first and second logic levels. The transmitter receives and modifies the data signal and feeds the modified data signal to the communications bus. The transmitter includes a drive circuit and an output circuit. The drive circuit receives the data signal and a clock signal and generates control signals which depend on the logic level of the data signal. The control signals are sequentially generated when the data signal has consecutive bits of the same logic level. The output circuit receives the control signals and the data signal and generates an output signal which corresponds to the data signal, but which has a varying drive strength determined by the control signals.