Some equipment with a "FZJ101 H4" DIP-16 IC, needs replacement. Best I can determine it's a Siemens dual JK flip-flop. No idea what logic, voltages, etc. it's based on.
I'd like to find a datasheet and with the goal of replacing this IC with a modern one and some external circuitry (I think this is a high-voltage type, maybe resistant to noise?).
Any help is very much welcome.
Thanks.