Also worth considering is the HV5622, which I've used in a couple of clock designs.
Also available in a PQFP package if you want to solder it onto the board. Cheers David On Wed, 15 Apr 2020 at 15:15, Kevin A. <[email protected]> wrote: > It is important to note that there is large voltage drop across the tube. > The potential difference between the cathode and ground is typically close > to 100 volts less than the anode voltage. Meaning that for a typical tube, > at 180 volts at the anode, the voltage between the active cathode(s) and > ground would typically be around 80. These devices are overkill as far as > voltage goes but again, they replace so many components it's almost a no > brainer. Unless of course you want the aesthetic of 60 transistors on your > board. > > On Wed, Apr 15, 2020 at 10:10 AM Kevin A. <[email protected]> > wrote: > >> I've been using a few of the microchip high voltage serial to parallel >> converters in a number of projects. They are great and reduce component >> count significantly. >> Here are some of the major differences with the devices I've used for >> nixie applications. >> >> All the following are 32 bit (controlling 32 individual high voltage open >> drains): >> >> - HV5522: >> 220 volt rating >> 12 volt logic level - has been run at 5 and 8 volts VDD, YMMV >> Shifting direction - clockwise viewed from top of package >> Available packages - PQFP-44, PLCC-44 >> Power dissipation: 1.2 watts for both package types >> Minimum ground current: 1.5 amps (duty cycle is limited by power >> dissipation) >> >> - HV5530: >> 300 volt rating >> 12 volt logic level - has been run at 5 and 8 volts VDD, YMMV >> Shifting direction - clockwise viewed from top of package >> Available packages - PQFP-44, PLCC-44 >> Power dissipation: 1.2 watts for both package types >> Minimum ground current: 1.5 amps >> >> - HV5523: >> 220 volt rating >> 5 volt logic level >> Shifting direction - clockwise viewed from top of package >> Available packages - QFN-44 >> Power dissipation: 3.4 watts >> Minimum ground current: 1.5 amps >> >> - HV5622: >> Identical specs to HV5522 - shifts in opposite direction - >> counterclockwise from top of package >> >> - HV5630: >> Identical specs to HV5530 - shifts in opposite direction - >> counterclockwise from top of package >> >> - HV5623: >> Identical specs to HV5523 - shifts in opposite direction - >> counterclockwise from top of package >> >> On Wed, Apr 15, 2020, 9:42 AM Richard Scales <[email protected]> >> wrote: >> >>> There seem to be so many nearly identical products from Microchip. I >>> have been experimenting the HV5622 which has 32 outputs,etc.etc.etc - it >>> is also available in SMD format if desired. >>> Yes, it needs (likes) 12V levels though on the bench right now I have >>> one clocking away being driven entirely by a WeMos at 3V3 levels - totally >>> out of spec I know. I plan to be shifting levels to 12V using 2N7000's for >>> the 'real' thing - but they have not turned up yet! >>> >>> It might help you to know (you may already know) that Microchip offer a >>> 'samples' service so you could get some for 'evaluation' purposes. >>> >>> Richard >>> >>> >>> On Wednesday, 15 April 2020 14:28:39 UTC+1, joenixie wrote: >>>> >>>> Hi John, >>>> >>>> Ayeeeee..... I was looking the 8 channel push pull brother of this and >>>> it was 5 volt logic, sigh... I thought it was tooo easy, but maybe it won't >>>> be so bad, i's just a few leads needing shifted. >>>> >>>> Thanks! >>>> Joe >>>> >>>> On Wednesday, April 15, 2020 7:47:55 AM CDT 'John Rehwinkel' via >>>> neonixie-l wrote: >>>> > > I was digging around mouse for serial to parallel converters when I >>>> ran across these Microchip drivers HV5630 @ >>>> https://www.mouser.com/datasheet/2/268/20005855A-1512677.pdf. >>>> > > >>>> > > With two of these you could drive 6 digits without polling and have >>>> 4 extra lines left over for ne-2 lamps. >>>> > > >>>> > > Are they as good as they look or am I missing something. They're >>>> cheap too and easily had solderable. Seems too good to be true >>>> > >>>> > They take 12V logic levels, so would need a level shifter for use >>>> with ordinary 5V or 3.3V logic. >>>> > >>>> > - John >>>> > >>>> > >>>> >>>> >>>> -- >>> 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/c97968d4-9b96-4f02-a5ef-682f34182705%40googlegroups.com >>> <https://groups.google.com/d/msgid/neonixie-l/c97968d4-9b96-4f02-a5ef-682f34182705%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/CALcVLK%2B870EGpzdPZBHXxcOTvLtkm%3D04PhZm_vQ%2BgqD4qNLEig%40mail.gmail.com > <https://groups.google.com/d/msgid/neonixie-l/CALcVLK%2B870EGpzdPZBHXxcOTvLtkm%3D04PhZm_vQ%2BgqD4qNLEig%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. 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