I have some noise on my SPI SCLK line that it is hard to get rid of, so I am looking for a schmitt trigger, line driver or similar that works with 1.8V logic levels and would trigger on approx 0.4V for low output and 1.4v for high output.
I need a fast enough IC to be able to run 10MHz SPI without the SCLK line lagging.
A number of schmitt trigger buffers compatible with 1.8V logic levels can be found here. The AUC series may be worth looking at in particular.
The input threshold levels aren’t all that tightly specified on any of these, though if you’ve got noise enough to propagate through the hysteresis it’s probably worth identifying and trying to deal with at the source.