Other Parts Discussed in Thread: SN74AHCT00Q-Q1,
Hello,
This might be an FMEA-related question, but does the SE555DR have a failure mode that causes its OUT pin (pin 3) to stick to High?
Best regards,
Shinichi Yokota
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Hello,
This might be an FMEA-related question, but does the SE555DR have a failure mode that causes its OUT pin (pin 3) to stick to High?
Best regards,
Shinichi Yokota
Shinichi-san,
There isn't a failure mode that would cause the output to stay high. Do you have any circuit details (schematic) and details regarding this issue?
Chris,
The end application is an automotive product. So, I guess the question is linked to FMEA. I believe it's not that an issue is happening now.
I asked the same question about another product, SN74AHCT00Q-Q1, and the answer says a damage to the internal ESD structure of the output pins can cause this failure mode. How about the SE555DR?
Best regards,
Shinichi Yokota
Thank you for clarifying. The answer will be the same for the SE555 device. If the output ESD structure were to be damaged such that it created a short to the supply then the output could be held high.