Q: 24V Line driver IC

[Jonathan]

Most outputs from the p.p. are only about 3.3V nowadays ..Clive

You can shift it to 5V with a small mosfet/transistor and a couple of resistors, like my impromptu 'breakout board' here:



Or you could go for something more sophisticated - e.g. add a schmitt gate. Or kill two birds with one stone and use and optocoupler and phototransistor instead of just a transistor.