[TenTec] Other TT digital displays ?

[Hulett, Russell]

Somehow I had the evidently wrong impression that the earlier displays like for the Omni C used TTL chips still readily available.  Upon review of the schematic for my 544, the MK50398N chip is mentioned.  I haven't looked at the Omni D-B yet. Is the replacement discussed for the Corsair II also a potential replacement for earlier Ten Tec digital displays?  

73, Curt KB5JO