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The input “nReset” doesn’t work properly:

The nReset input must dominate all other inputs, if nReset is "Low" the output must be set to zero (+ discharge activated).

Here in CL this is only true before triggering the timer, but is not if one wants to stop pulses or set the output to zero when the timer is already running.

Additionally, it’s not clear if CL’s model wants to represent the standard (bipolar) 555 or the CMOS timer, at the moment it seems to be in between?

Regards, Sancho

Anyone have a working CMOS 555 block yet?

See:

https://www.circuitlab.com/forums/support/topic/5yc7a6mu/bug-report-high-level-voltage-at-output-pin-of-cl-555-timer/

and:

https://www.circuitlab.com/forums/support/topic/e4wyttj4/bug-report-555-timer-model-vcc/#comment_3885

:)