Cannot switch S1/D1 off on ADG1414

Hi, I have made a very simplistic setup with an arduino and the ADG1414.

And the program has a counter going from 0 to 255 and it writes this counter out via the SPI.

All switches are working just fine except S1/D1 all the other follow the count sequence just fine.

I've double and tripple checked toe connections and they are just fine. I've switched between several ADG1414's no luck.

I've of course set the speed so I would see it and I've also used a logic analyzer with same result :-(

Any ideas out there?

Here is the schematic

Thanks in advance



Error in schematic :-)
[edited by: JarlAtCloud at 7:21 PM (GMT -5) on 26 Nov 2020]
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