I am currently driving from a pic pin through a 10k resistor to a pn2222a, base with the collector on ground and the emitter tied with 10K resistor to 5v. From the emitter out I am able to drive up to 300 ft to a similar circuit on the other end. In this configuration it is inverted and driven a good distance.

The 7414 with the schmit triggered input will restore a very similar output to the other end, inverted from the single input on the '14.

I am using this circuit configuration for PS/2 communication, works well.

K