I find it dificult to find the TC74HC595AP.
Can I use SN74HC595N instead?
I fear they are not similar enough since the circuitboard includes both.
Why should it have two "different" if they had the same function?
I just can't se any major difference. Pinning seems the same, and timing seems the same as well from what I can see.
Datasheet for TC74HC595AP: https://pdf1.alldatasheet.com/datasheet-pdf/view/31763/TOSHIBA/TC74HC595AP.html
Datasheet for SN74HC595N: http://www.ti.com/lit/ds/symlink/sn74hc595.pdf
Thanks in advance!