Accumulation of heavy metals in tree seedlings from soil amended with sewage sludge

An integrated circuit electrically is supplied with a voltage and includes an output MOS transistor having a gate driven by an output of a logic circuit and a circuit for biasing the gate of the output MOS transistor. The circuit for biasing the gate is provided for lowering a gate-source bias voltage of the output MOS transistor in a conductive state in relation to the gate-source bias voltage that would otherwise be provided by the output of the logic circuit. The present invention is particularly applicable to output stages for I2C buses.