[sdiy] unused comparators

David G Dixon dixon at mail.ubc.ca
Sat Nov 2 23:21:18 CET 2013


> >> > LM339 data sheet specifies that all pins of any unused 
> comparators 
> >> > should be connected to the negative supply.
> >
> > Yep, there it is, right on page 5: "All pins of any unused 
> comparators 
> > should be grounded."
> 
> Negative supply... ground...
> sooo many places to connect the pins to. :-)
> 
> /mr

Well, in this case, I'm driving TTL with the comparators, so the negative
supply IS ground (as far as the comparators are concerned).




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