Have you looked at a max6920 or 6921? On Sat, 30 Jan 2021 at 00:57, peter bunge <[email protected]> wrote:
> I need to drive a single IV12 vacuum fluorescent display from a BCD to 7 > segment chip. > I could use level shifters like the CD40109B or CD4504B but they don't > have 7 devices in one chip (4 and 6) and only drive 18 volts which might > work. > I could use a ULN2803 transistor array with 7 pullup resistors on the > outputs. The problem is the BCD to 7 decoders (e.g. CD4511) are usually > active high, which I need, but the ULN2803 is an inverter which I don't > need. A CD4543B might work as the BCD to 7 and can be selected for inverted > outputs but it is designed for LCDs not driving transistors. > The 74LS47 has the right polarity to drive the transistor array but it > has open collector outputs so 7 more resistors are required. > Any suggestions that don't get even more complicated (shift registers, > octal inverters, arduinos, etc) > I'm looking for a convenient driver chip. > > -- > 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/272c6223-da83-44e2-b180-dfb3bc46b40en%40googlegroups.com > <https://groups.google.com/d/msgid/neonixie-l/272c6223-da83-44e2-b180-dfb3bc46b40en%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- 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/CALY4pG2o4oF76TCvumgnOszLqWwDfmL-%3DRLMNmW31-JQpq7rsw%40mail.gmail.com.
