The EXar web site did not show anything, I would hazard a guess that is a 'house' number and the 8801 is manuf. date.
I would hook 5v supply up to the red & Black and see what you get, the electronics look very basic, probabally transistor driver output on the i.c. try it into TTL with and without a pull-up.
Al
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CNC, Mechatronics Integration and Machine Design.
“Logic will get you from A to B. Imagination will take you everywhere.”
Albert E. |