[sdiy] 7905 regulator "metal package"?

[Bob Weigel]

Hmm.  I'm...not sure..I think I recall having that in an old databook 
and that it's not maybe ground.  Might be input....looking...yup. 1980 
VR national manual says it's input.  1 is ground and 2 is output. 
Looking underneath if you hold it where the pins are *up* from center, 
then 1 is on the left and 2 is on the right. -Bob

cs e wrote:

>I've got a mc7905ck "-5V" reference IC here, its the wide "metal
>package" version.  I cannot find a datasheet for this package type!
>
>I assume that the "metal case" itself is Ground, but I don't know
>which pin is input and which is output.  I am afraid to "test it" and
>destroy the device - because it is the only one I have right now and I
>need to use it soon (can't wait to order another one).
>
>Any help?  If I wire it up backwards will I destroy it?
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