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AD9528 SPI interface input levels

Question asked by JimmyE on Mar 22, 2016
Latest reply on Mar 23, 2016 by pkern

The AD9528 data sheet provides only typical Vih and Vil input logic 0 and logic 1 levels for CS, SCLK, and SDIO for SPI mode operation ranging from 1.22 to 1.76V (table 17).   Is there any info available on minimum Vih and maximum Vil valid levels?  I would like to possibly drive with 2.5V or 3.0V driver and want to know how much margin is available.   Maybe the values in table 18 apply?