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Kesavan_Ramalingam
Visitor II
October 30, 2025
Solved

555 timer _ ASIL B requirement

  • October 30, 2025
  • 1 reply
  • 137 views

Hello Team

 

I have a general query. 

 

Do we have any 555 timer with ASIL-B or ISO26262 compliant. 

 

I am interested in discrete level solution rather going with MCU and my aim is to have redundant control/ feedback/LIMP HOME mode embedded in the 555 timer so that i can achieve functional safety requirement.

 

Thanks

Kesavan

Best answer by Peter BENSCH

Welcome @Kesavan_Ramalingam, to the community!

The TS555 has been on the market since 2003, but the ISO 26262 was first published in 2011, so the TS555 cannot comply with this. Other 555 timers that support ISO 26262 are not available from STMicroelectronics.

Regards
/Peter

1 reply

Peter BENSCH
Peter BENSCHAnswer
Technical Moderator
October 30, 2025

Welcome @Kesavan_Ramalingam, to the community!

The TS555 has been on the market since 2003, but the ISO 26262 was first published in 2011, so the TS555 cannot comply with this. Other 555 timers that support ISO 26262 are not available from STMicroelectronics.

Regards
/Peter

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