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SN75C32221E, PIN 1 enable

We're currently using Maxim's MAX3226ECAE+ on our board and would like to use your SN75C32221E instead since it is more readily available.    The 2 devices are functionally the same.  Pin 1 on the Maxim part is a READY pin while pin 1 on your part is an ENABLE. 

Can you tell me if this pin is pulled high internally or is it floating?

Thanks