A low side driver

An output driver circuit has an input, an output, a supply, a first (MN1) and a second transistor (MN3) coupled in series between the output and the supply, parasitic diodes of the first and the second transistor are anti-serially coupled, and having first (MP2, MN2) and second (MP3, D4, MN4) control circuits coupled to control the first and second transistors respectively. The first transistor is controlled as a controlled current source depending on a signal at the input, during normal conditions when current flows through the output is in a first direction, and the second control circuit controls the second transistor to prevent unwanted DC current at the output from flowing through the output in a second direction. The first and second transistors are also controlled to limit unwanted transient currents during an EMC disturbance substantially symmetrically.