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TLV4051: Similar Device w/following parameters

Part Number: TLV4051
Other Parts Discussed in Thread: TLV4041, TLV7032

Hi team, 

Do we have a device similar to the TLV4051 with the additional capability of latching the output when the threshold is crossed. It would still need the same push-pull functionality if possible.

Dual ch or quad ch is preferred, but single would be ok. 

Thanks, 

AH

  • AH

    Your application is interesting.  I do not have an immediate solution for you but I have a few clarification questions.  Do you want the output to latch when the output goes high or low?  Can you share what is driving the inverting pin of the comparator?  I have seen instances where I can use external feedback to create a latching function but it really depends on the details of your circuit.

    Chuck

  • Hi Chuck, 

    The application is still in the design phase, so they could either latch it high or low. Feedback is that they'll add some external logic to create the latch if there isn't a simpler solution. Do we have any one-pagers or examples we can share?

    Thanks,

    AH

  • AH

    Most likely they will need to add external logic.  If the application is still in design phase, it is easier to directly latch the output in non-inverting configurations by placing a diode in the feedback.  Attached is an example of what I am referring to.  Many of our devices have known startup conditions, so depending on what is being monitored, the output can be used to shift the input and cause a latch when the output goes high.  A good example of such a device would be the TLV7032 but this device would require an external reference.  The TLV40x1 family that you originally referred to also has a know startup condition, so the same concept could be applied to latch a non-inverting configuration such as TLV4041.

    Chuck

  • Thanks Chuck, I appreciate the help!

    AH