Hi Team,
My customer is using the LMC555C for a 10 second timer one shot use case. In their schematic they have the RC pulled up to OUT instead of VCC like our application circuit shows. They are using a 8.66M and 1uF combination for the time constant.
1. Is this a valid design to have the pull up to OUT or will that lead to variations?
2. They tried changing to 866k and 10uF which actually changed the timer average response to ~14 seconds. Is this possibly related to the above point? Is there a recommendation on magnitude for the R?
Thanks!
Reed