ADIS16375 Datasheet
Based on the current specifications, the Logic 0 Input Current specification for the chip select (~CS) pin is 10uA.
We have recently discovered that Logic 0 Input Current for the chip select (~CS) pin should be 0.33mA
In the next revision of this datasheet, two changes will help clarify what developers can expect:
Revision D of the ADIS16375 datasheet has captured these improvements and is now online.
http://www.analog.com/media/en/technical-documentation/data-sheets/ADIS16375.pdf