What's a simple way to build a 3-bit ring counter with real components?

Papabravo

Joined Feb 24, 2006
22,105
It looks like they have both this and the CD4017 at my local store. But the 74HC175 has only 1 reset pin shared by all 4 flip flops. Doesn't this just reset all four of them to low?
it does. So, if you want to do initialization, it has to be done synchronously with the D inputs.
 

WBahn

Joined Mar 31, 2012
33,076
You might consider coupling an the IC with the four FF with another IC containing the next-state logic. That could probably be done using a PAL (Programmable Array Logic). An example (which may or may not work for this design) is the 22V10 or similar. This would allow you to keep the implementation to two through-hold ICs (for the core logic).
 
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