Damaging BCD-to-decimal decoders?
You may be interested that you can just use npn transistors. This arrangement lets you use 7 pins to drive all 10 nixie digits. Off bases must be driven low. On a pcb, this is just 5 dual BC846 transistor packages.







simulate this circuit &ndash; Schematic created using CircuitLab

It is possible to drive 10 digits with only 6 pins, but 6 resistors are needed.

ignore(i.stack.imgur.com/2vAjU.png)