Relevant looking signal (alternate time slices varies with varying DC at ch
1 and ch2)gets to the analogue data-in of the ZN449 , enable, clock etc ok
but invariant data out on the 8 data lines.

I've some SMD ZN449 , any tips for converting to 18 pin conventional DIL?
Start with a turned pin socket in the pcb to receive another one to carry
the SMD, yes but any other tips ?