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SN65HVD1781: A and B fault tolerant

Part Number: SN65HVD1781

Hi,

 I can see in datasheet that A and B inputs are fault tolerant up to 70V. 

Actully in my design A and B are connected with the digital Input signal where digital input is continuous 30V. (In case of digital input ckt is selected.)

At a time only one application is used either RS485 or digital input.

So just wanted to know is it OK if there will be continuous 30V on A and B and RS485 RE and DE are disabled.

Thanks