Optocoupler

I want a little more protection to isolate the output of my Ublox Antaris 4 GPS. I have these optocouplers in the bin.

• 4N26
• 4N28
• Monsanto MCD-2 - "ESP" - Cant find data sheets for this one -- closest thing is MCT2 All I could find was an add in 1974 Radio Electronics! TRASH.

It only needs to run at 9600 bps.

Some articles

http://www.martyncurrey.com/activating-the-shutter-release/

http://www.bristolwatch.com/ele/opto_isolated.htm