Help to identify IEE VFD display driver

[artelse]

I have this large IEE VFD display that I want to repair.
Some VFD driver chips are dead and am trying to find out what they are and what make these are. The type number is 44791-01 and manufacturer logo is a 2 in a segmented circle see attached photo.
A quick drawing of the connections:

        +---u---+
      d |       | d
      d |       | d
      d |       |
        |       |
        |--     |
     V+ |   \-- | Gnd
        |       | d
      d |       | d
      d |       | d
        +-------+
         44791-01
 d = segment driver


Any ideas, have not been able to find a datasheet.

[coromonadalix]

normally theses have discontinued for a long time

SUPERTEX 44791

[fzabkar]

Not the same but ...

https://www.futurel.bg/datasheets/4/HV6810.pdf

[artelse]

[EDITED] Thanks for the info, digging in some more on the HV6810 reference, I've found the Allegro Micro UCN5810 a predecessor of the HV6810 carries the 2 encircled logo on some chips. And double checking layout it seems pin compatible with the 44791.
Cool, will order some from China, are cheap as well.

[fzabkar]

The A6810xA appears to be a newer option:

https://www.allegromicro.com/-/media/files/datasheets/a6810ep-datasheet.pdf (A6810xA, A6810xLW, A6810xEP)
https://www.allegromicro.com/-/media/files/datasheets/a6810-datasheet.pdf (A6810)

https://www.allegromicro.com/-/media/files/datasheets/ucn5810-datasheet.ashx (UCN5810)