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TL331B-Q1: Is the die in this part the same as in the non-automotive TL331?

Part Number: TL331B-Q1
Other Parts Discussed in Thread: TL331,

Is the same die used in both the TL331 and TL331B-Q1?  We are seeing different behaviors when using one vs the other on our board.

Thank you.

  • Hi Bill,

    Thanks for the post. No, the older TL331 is a different die than the TL331B-Q1 die. What differences are you seeing in the behavior? 

    -Chi

  • From our test department: 

    We are monitoring the comparator outputs (6 comparators, U45-U51) via the PIC. Since only U50 is throwing a fail this tells me it is likely a response time issue with 31BQ marked parts. We are failing test with the part marking “31BQ”, but the same part with marking “T1IL” is passing.

    So initially, it seems like a timing issue.  Still investigating.

  • Sorry to hear that Bill. Is the response time slower than expected? When you can, please share schematic and waveforms of your inputs and outputs. 

  • Hi Bill,

    We haven't heard back from you so I am going to close this post. Feel free to reply back if you have any updates.

    -Chi