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Reply to "LEGACY System Utility v1.0"

Originally Posted by Don M.:
The chip is a TI SN75C189. I've attached the specification.


That's a receiver chip, I think the issue here is the drive capability of the boxes.  That would probably be a the matching SN75C188 given they used it's stable-mate.

This is the likely driver and it's drive capability.

SN75C188 Datasheet

OGR Publishing, Inc., 1310 Eastside Centre Ct, Suite 6, Mountain Home, AR 72653
800-980-OGRR (6477)
www.ogaugerr.com

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