Considering...
1) Use an isolated driver such as the ADM2486 with an isolated 100mW 5V-5V DC-DC converter.
2) Use my standard 485 driver (LT1785) and power it with an isolated 100mw
5V-5V DC-DC converter and use 3 opto-couplers for the data and enable lines.
Are there advantages to one approach or the other? Which opto-couple should I use for #2?
thx