Ideally, you want a totem-pole driver for the SN74568 because it will shunt-away some of the leakage current that would otherwise get amplified.
You've got me stumped on the 3.3V vs 5V observation. The only thing I can think of is the 3.3V driver has stronger pulldown than the 5V driver (need a scope to confirm). -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/5b9d89ad-176e-4137-8550-60c5fea5505b%40googlegroups.com.
