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I want to use SN74AXC4T245BQBR part as voltage level shifter (for SPI Application) in my Project. From the datasheet I have learn that VCCA and VCCB both can supply on any voltage range from 0.6V to 3.3v. When I refer a reference design in that VCCA<VCCB but I want to supply 3.3V on VCCA and 1.8V on VCCB, So is it ok if I take VCCA>VCCB.