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Subject: Buffer to Interface to Parallel Port

Date: 02/06/03 at 12:20 AM
Posted by: Franklin DeMatto
E-mail: not@available.com
Message Posted:

I'm looking for plans for a parallel port buffer: something that would portect the parallel port from whatever it is connected to (high voltage, negative voltage, too low impendance, etc.) Can anyone help?

If no one knows of plans, what is the best way to do this? Do I need optoisolators, or should I just use TTL buffers? And is there an IC that can isolate/buff all 24 pins, or do I need to use a couple of IC's?

In general, can anyone provide me with specs of what is safe to hook to a parallel port?

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