[sdiy] optocouplers and MIDI

[Benjamin Riggs]

just a quick question to the list,

I know the 6N138 is suitable to use for MIDI, but is the 6N139 also suitable? as far as I can tell it is (it's rise and fall times are shorter, and it can drive more current) but I'm sure someone else on the list is more knowledgeable than me in this department.

cheers

Ben
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