test an IC

wmodavis

Joined Oct 23, 2010
739
There is!

Power it as spec'd in the spec sheet. Note if supply current is within spec as spec'd in the spec sheet.
Apply appropriate inputs as spec'd in the spec sheet.
Observe outputs for appropriate values as spec'd in the spec sheet.
If Icc or some output is not within spec sheet range the IC may be bad or your setup/measurement technique should be reviewed.

Notice my emphasis! The spec sheet is your friend!
 

Thread Starter

pureenchantment

Joined Feb 17, 2012
2
Many thanks to each and all. I fully appreciate the"spec" and "data" sheets in fact that is where most of my limited knowledge comes from. I have returned to this one time hobby for the sake of my grandchildren. Having got this 4029 sort of working, I realise my limitations to be eyesight (wires in the wrong holes on the breadboard), and greymatter (Takes more time to remember how easy it once was). Thanks again.
 
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