[time-nuts] low power divide by 5

[jimlux]

On 7/1/20 1:41 PM, ed breya wrote:

> Yeah, I know. I was just lamenting the lack of nice medium-density count 
> functions in 74AC. It's hard to beat the simplicity of a '390 when you 

> 
> Anyway, I've always liked having a wide assortment of MSI logic devices 
> available in all families, that you just hook up and it goes - no setup, 
> no programming. I've saved lots of counter types for possible use. One 
> obscure one is the MC14566, with divide 6 counters for clock time 
> readout and generation, in the old days.

That's sort of the design goal for the 22V10 and earlier PAL devices - 
keep them in familiar DIP packages, power on the corners like the IC 
gods intended, and you can program it to replicate a whole variety of 
MSI functionality, often with the same pinout.