Adam said:
>
>What protection does the 75176 have against spikes, static electricity and
>shorts?  Are the DMX lines properly terminated, etc?
>
>-Adam

    This is really important! Lines which can write to
    memory should have the lowest possible impedance to
    ground consistent with still being able to drive HIGH.

    Pull them down or up with 1K or lower if you can.

    Check your device in a noisy environment to test the
    effectiveness of this; e.g., connect a relay as a
    buzzer and run it off the same supply, hold it next
    to the circuit board and watch for problems.

    Regards,
    Reg

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