We have a remote signaling device that operates from a
3.2V battery source using a CMOS version of the timer..At random and I mean very random, the circuit may need a power cycle.
I was able to probe it while in a failed state and it appears that the chip could be latching? The only input that is exposed to what could be a possible issue is the threshold input.
I thought that if this is a latching issue that maybe it was losing the power source while moving around and the input was exceeding the Vdd? But that proved to be not the case.
I can't go into what this is used for other than it sits on a rotating mass powered via a cell pack and operates a tracking laser (small diode). etc.
Has anyone experience this chip performing the magical latching that some Fet entities have?
Jamie