Sockets (was:: Solus Troubleshooting Results)

[Arthur Harrison]

Yup, I'll agree with that.  Those problems get especially
severe with some high speed comparators.  Of those, I
especially like the  Maxim MAX912 and MAX913 parts,
since they behave well without hysteresis.  Maxim, BTW,
never has obsoleted a single one of their thousands of ICs,
and has pledged never to do so.  (More than can be said
for many IC manufacturers!)

-----Original Message-----
From: Haible Juergen <Juergen.Haible at nbgm.siemens.de>
To: DIY <synth-diy at mailhost.bpa.nl>; Arthur Harrison
<theremin1 at worldnet.att.net>
Date: Wednesday, December 02, 1998 4:03 AM
Subject: AW: Sockets (was:: Solus Troubleshooting Results)


> >JH wrote:
> >
> >There are a few ICs that should *never* be used in sockets,
> >though. LM339 is one example. (Unless you have a
> >hysteresis on each comparator)
> >
> >I write:
> >
> >I don't understand this.  If the dv/dt is sufficiently high and the
> >reference
> >input is stable and of low impedance, these comparators seem to
> >work fine in sockets, without hysteresis.
> >
> >-Art
>
>There's a remark about that in the data sheet. Sure, there are applications
>where it will work in a socket. Problems occur when your input signals
>have high impedance. Using a socket increases stray capacitance,
>and feedback from the output is likely. So I retract the "never". It's good
>to be careful, though.
>
>JH.
>
>
>
>