[sdiy] 748 replacement??

[David G. Dixon]

Dan, I've never used a dedicated comparator, always just an opamp, and that
usually means a TL07x.  I've never had any problems.  It seems that 13V/us
(i.e., rail-to-rail in about 2 microseconds!) is plenty fast for all my
comparating (?) needs.

> in electronotes I often run into old chips
> I often see the 748 being used.
> can i replace this with either
> a. any modern comparator?  like a 339? 311?
> or
> b. just use a tl072 as a comparator?