well, if the tab was GND, then it would simplify the board layout. I'm guessing more about an internal structure rather than this... but everyone may have it's own assumption... only the original designer would probably know...
thinking about reference in a dual rail supply... you could discover why they do it like that... is 79xxx really a 79xx or a 78xxx relabelled ??? i didn't compare their internal schematic.
if everything would be standard, it would remove all fun...
Last edited by mister_e; - 15th May 2007 at 02:50.
Steve
It's not a bug, it's a random feature.
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