When using an H bridge IC such as L293 which has enable inputs, is it possible to tie outputs together such that an 'enabled' output is joined to a 'disabled' output without ill effect? In the system I am thinking of (to do with DCC Train control) there would never be a time when both tied outputs would be enabled but could be a time when neither was enabled. Is this possible? (or harmfull to the IC?)
I am very new to this website so don't know how to add schematic. However, what I want to do is to use this device to power a point (turnout) section of track in a model railway using DCC. In one position of the turnout I want to power the frog with one output(say the A side) with the other tied output (B side) disabled and then in the other position of the turnout the power comes from the B side with the A side disabled.