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In Power OFF, equipment with RS485-I/F is at single.

Question asked by DMN on Dec 13, 2013
Latest reply on Dec 16, 2013 by DMN

Dear all,


Please let me know about ADM489A.

Now, the product which supported RS485 is designed.


The RS485-I/F circuit of our product is as attachment.

(It includes the following questions) 


Although RS485-bus is generally serial connection of multiple products, when only our product drops the power supply, please let me know the following.


Q1) When the power of ADM489A in an attached file drops to 0V, does ADM489A break under the impact of RS485-bus under operation?

Q2) When the power supply of this equipment is dropped, does it have bad effect to RS485-bus under operation?


Best Regards,