5859 nixie tube clock circuit wanted!

[xwarp]

I've got this old Systron Donner freq counter that I have been very unsuccessful in finding any information on. It's apparently a custom build for Motorola. Maybe that is why.....

In any case, it has issues and I want to build a clock out of it, but I've not found schematics for a clock circuit that uses the 5859.

Caveat is that I do not want a PIC type circuit.

Any suggestions would be appreciated.

[Ian.M]

Is that an objection specifically to PICs or to MCUs in general?  Over in https://www.eevblog.com/forum/projects/hv5812-driving-nixies/ I suggested SN75468N transistor arrays which have a 100V Vce rating as alternative drivers.  With its outputs clamped by a 90V Zener there appears to be a sweet spot between 170 and 190V B+ where it will drive your Nixies comfortably (based on the 5859 datasheet figures).  As its input is individual 5V logic level pins, you can then use any 'classic' SSI logic digital clock circuit you like.