[sdiy] Protection Device?

[Tim Ressel]

I have had issues with slow edges and uP inputs, especially interrupt 
inputs.

--timbo


On 6/19/2018 2:13 PM, Tom Wiltshire wrote:
> I doubt there’s a way that’s significantly easier than three or four basic parts. Do you really need a Schmitt trigger? Doesn’t the uP have Schmitt inputs?
>
> Using an op-amp that clips the input to its rails as Olivier suggests is a different approach that I’ve used sometimes but whether that’s much “simpler” is an open question. I suppose it sort-of counts as “one component”, but it feels like more circuitry to me.
>
> Tom
>
> ==================
>         Electric Druid
> Synth & Stompbox DIY
> ==================
>
>> On 19 Jun 2018, at 20:52, Tim Ressel <timr at circuitabbey.com> wrote:
>>
>> Hi,
>>
>> I am forever duplicating a circuit for protecting processor inputs: a series current limiting resistor, a pair of schottky diodes for clamping to ground and pos rail, and sometimes a schmitt trigger buffer. Is there a single component that does this?
>>
>> -- 
>> --Tim Ressel
>> Circuit Abbey
>> timr at circuitabbey.com
>>
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-- 
--Tim Ressel
Circuit Abbey
timr at circuitabbey.com