Try anything old from their 2000 paper catalog, in the seach box, eg MC1391 or MC3302 and "There is no product that matches the search criteria"
Up to 6 months ago all that stuff was available, ancient TDA... etc
Or is it just crap interface , if incessant scrolling irrelevances are any indicator
-- Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on