ISO1176T ESD protection

I use A 3 pin termianl for the profibus communciation as an alternative of the standard DB-9 connector, then contact 4kv ESD level test is necessary for the terminal of the A, B, and shield signals, please suggest the TVS for ESD protection, as the high speed 12M singal, we will need low capacitance and fast TVS for the data lines, I select the ISO1176 for Profibus transceiver.