Re: 8051 dead or what?

Jim Granville wrote:
Alistair George wrote:

Ian Bell wrote:

Alistair George wrote:

Re HEF40106BT been there, tried that does not work in our use, which as
a very high gain oscillator.


You are using a hex schmitt trigger as a high gain oscillator?

Ian

Yes, in the original National app notes shows a schmitt trigger as an oscillator. Variations between manufacturers have largely made that form of use redundant.

This is curious - I take it you mean something other than the
standard, widely used 2 terminal RC Schmitt oscillator ( or the 3 terminal oscillator, which is more acurate but needs 3 gates of a 40106 ) ?

Do you have a URL of such a configuration ?

-jg


No Jim, the former as you suggest but in our app it uses a 3m3 feedback r and a special capacitor. Spreads between i/c of the same maker were acceptable, but not between supposed replacement alternatives.
In hindsight, I should have used a comparator for the job.
Al.
.

Relevant Pages

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  • Re: 8051 dead or what?
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    (comp.arch.embedded)
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