The NLPS591 is a fully−configurable port companion for display applications. The device supports 4 externally selectable modes: (1) 4−Ch autosensing logic level translator mode, (2) CRT mode, (3) HDMI mode and (4) DisplayPort (DP) mode. The device provides switchable power to the connected display and the level shifting necessary for the different display modes. It also provides high−level ESD protection on the connector side.