barry
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Does anybody know the specification for the MAXIMUM output voltage a MIDI driver will see?
The output is generally an open-collector pulling a resistor to ground, so that nominally 5mA flows, but I don't know what the maximum voltage that could be applied to the other end of that resistor might be. (And I'm too cheap to buy the spec just for this one bit of information). Older designs I've seen use 7406's that are good up to 15 volts. I'm working on a new design, and want to know if I can use a low-voltage(3.3V) open-drain device (LCX, LVT, etc.). These devices can be 5-V tolerant, but not much more.
Thanks,
Barry
The output is generally an open-collector pulling a resistor to ground, so that nominally 5mA flows, but I don't know what the maximum voltage that could be applied to the other end of that resistor might be. (And I'm too cheap to buy the spec just for this one bit of information). Older designs I've seen use 7406's that are good up to 15 volts. I'm working on a new design, and want to know if I can use a low-voltage(3.3V) open-drain device (LCX, LVT, etc.). These devices can be 5-V tolerant, but not much more.
Thanks,
Barry