I’ve had great experience with the TPIC6B595s, I used them to drive a whole bunch of miniature bayonet style bulbs for a clock using IEE one plane readouts, no problems with them so far. Probably a little over 120 mA per IC.
> On Aug 17, 2022, at 8:12 PM, Christian Riise Wagner <c.riisewag...@gmail.com> > wrote: > > Even running more than 3 segments @20mA is actually out of spec as the > maximum ground and source current for the 74HC595 is 70mA. I found that it > didn't work satisfactory for an IV-19. Too high a voltage drop. Might be okay > for smaller numitrons though. I've ordered some TPIC6C595 instead to try out > instead. > > Regarding the software, if the microcontroller has an SPI peripheral (most > do), you can use that to send out the serial data instead of bit banging. > It's how I've done it on all my microcontroller-based clocks so far. Works on > all the 3 different architectures I've tried. It's slightly more efficient > than bit-banging. The performance increase mostly won't matter, but it does > make sense when you're doing cross-fading of the digits where you might be > updating the registers hundreds of times per second. > > -- > 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 neonixie-l+unsubscr...@googlegroups.com. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/neonixie-l/26e03d85-8222-4436-88c7-9db9489081abn%40googlegroups.com. -- 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 neonixie-l+unsubscr...@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/EA15D4D1-0AAC-48B7-B599-9C3731E707AF%40gmail.com.
