# 74HC126 and I/O

**URL:** <https://forum.digikey.com/t/74hc126-and-i-o/71777>\
**Category:** Maker, DIY\
**Created:** [September 4, 2026, 8:23am UTC](https://forum.digikey.com/t/74hc126-and-i-o/71777 "2026-09-04T08:23:26Z")\
**Posts on this page:** 1\
**Page:** 2

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**Author:** ![silver2row](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/silver2row/32/1016_2.png) [@silver2row](https://forum.digikey.com/u/silver2row)\
**Post date:** [September 24, 2026, 7:03am UTC](https://forum.digikey.com/t/74hc126-and-i-o/71777/21 "2026-09-24T07:03:43Z")

</div>

Okay. I found a solution:

a. Use more tools/parts.

b. Components are key here.

c. I noticed on the omc-stepperonline website that they do not recommend using 3.3v logic but that it can work if done properly.

Thank you @heke for putting up with me. I appreciate you sticking with me on this build.

I am working on a solution in the form of a schematic. Bear with me.

I am not sure exactly how to provide the schematic so far with Fusion but I will keep trying.

Fusion has the 74HC126 but it is a bit difficult to perform specific operations for now to me.

Also, I used a conversion outside of the 74HC126. Oh and thank you for allowing me to understand about the removal of higher amperage out to the motor from the driver. I think this made a good fit for my testing.

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