I made a level converter and solved my problem. I used a 3.3V three terminal regulator, bypass capacitors for it, and a 74AUP1G07 fed with about 1 volt from a 1K and 2.2K ohm resistor voltage divider. The open drain output is pulled up to 3.3V through a 1k resistor. I tapped power from the 8 volts to front panel.