Re: [Emc-users] (Off topic) A Question Re: BOBs and Opto-Isolators

[N]

> Hello All -- especially Gene,
> 
> I've seen many posts on the lists regarding breakout boards and dealing
> with issues regarding slow opto-isolators. I have a question:
> 
> Is anyone using: ISO776x 
>  devices?

Well, not exactly his one but there are others with different numbers of 
isolation barriers/directions and these I have used. I think they are really 
good.

> They are 100 MHz data rate devices, have high isolation, have six in a
> package, and look like they would work just fine. The only downside might
> be that they are limited to 5.5 volts on the output, so you might need to
> add a transistor driver after them.

It is common Micro controllers have at least some 5 volt tolerant inputs. I 
have seen one of the new Micro controllers have 5 volt externally which 
probably is a rather good idea even if internal logic run on lower voltage.

> ... And all of the ones in a single package
> share a ground.

It's a drawback but only if you have separate supply voltage for each channel 
otherwise they are connected anyway.


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[Emc-users] (Off topic) A Question Re: BOBs and Opto-Isolators

[Kenneth Lerman]

Hello All -- especially Gene,

I've seen many posts on the lists regarding breakout boards and dealing
with issues regarding slow opto-isolators. I have a question:

Is anyone using: ISO776x 
 devices?

They are 100 MHz data rate devices, have high isolation, have six in a
package, and look like they would work just fine. The only downside might
be that they are limited to 5.5 volts on the output, so you might need to
add a transistor driver after them. And all of the ones in a single package
share a ground.

I hadn't seen them before, so I thought I'd mention them.

Regards,

Ken

Kenneth Lerman
55 Main Street
Newtown, CT 06470

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