I am designing a project that contains several CMOS counter ICs (CD4017 specifically).
What is the state of the counter on power-on? Do I have to incorporate circuitry that pulls the reset pin high on power-on to ensure the counter starts at zero?
I checked datasheets from multiple manufacturers, and none of them mention this subject. I found several claims online that the state of the counter is unpredictable on power-on. However, I also found many projects which do not include a reset circuit, and the issue is not mentioned either.
The reset circuit adds complexity and additional parts, which I would like to avoid if they are unnecessary.