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ISO7741: ISO7741

Kiran Shingote1
Prodigy 205 points
Part Number: ISO7741
Other Parts Discussed in Thread: ISO6741, ,

Hi Team,

Can you suggest alternate for ISO7741DBQ?

Thanks

Kiran Shingote

  • 0
    TI__Mastermind 23715 points

    Hello Kiran, 

    Can you please provide more information on what type of alternate is needed? For example, are you looking for an alternate package type, spec difference, etc.?

    If you are looking for another isolator in a DBQ package with 3 forward, 1 reverse channel then consider the ISO7741QDBQQ1. This part is the automotive grade version with the same performance and characteristics as the ISO7741DBQ. If the only requirements are matching channel configuration (and not package type or speed) then ISO6741 can work as well.

    Please let me know your inputs.

    Best,

    Andrew

  • 0
    Prodigy 205 points

    Thank you Andrew,

    I need drop-in replacement as both parts (selected and alternate) are out of stock.

    Regards,

    Kiran Shingote

  • 0 in reply to Kiran Shingote1
    TI__Mastermind 23715 points

    Kiran,

    Unfortunately the ISO7741 and ISO7741-Q1 are the only digital isolators that are have DBQ package options. Please click "Notify me when available" on ti.com to receive updates when new stock is available.

    Best,

    Andrew

  • 0 in reply to Andrew J
    Prodigy 205 points

    Thank you Andrew,

    After a lot of searching, I got two parts. One is ISO7141FCCDBQ and the other is ISO7730FQDBQQ1 (if I am using only 3 o/p channels). Can these part be drop-in replacement for ISO7741DBQ?

     Regards,

    Kiran Shingote

  • +1 in reply to Kiran Shingote1
    TI__Mastermind 23715 points

    Hello Kiran,

    Thank you for the added inputs. ISO7730FQDBQQ1 will be the closest replacement assuming only three forward channels are needed and the default state (designated by the "F" suffix) does not effect your system behavior. Here is a quick FAQ on the differences: (+) [FAQ] What is the difference between ISOxxxxF and ISOxxxx devices (Ex. ISO7741 vs. ISO7741F)? - Isolation forum - Isolation - TI E2E support forums).

    Please note that both ISO7141FCCDBQ and ISO7730FQDBQQ1 will be pin to pin with ISO7741DBQ. However, ISO7141F has a slower clock speed (50MHz) and is an from an older device family that does not use the OOK Architecture implemented in the ISO77xx family of devices. ISO7730FQDBQQ1 is the preferred alternate since it is in the same family as ISO7741DBQ and will have the similar behavior.

    I hope this answers your questions.

    Best,

    Andrew