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ISOM8710: Replacing Optocouplers

DDdoor
Expert 2315 points
Part Number: ISOM8710
Other Parts Discussed in Thread: ISOM8711, ISOM8110, ISO8110

Hello,

Are there any products that can replace the following products?

・TLP2368
・TLP291-4

Best reagrds,
DDdoor

  • 0
    TI__Mastermind 22155 points

    Hello, 

    Thanks for looking at our opto-emulators. See my recommendations below:

    • ISOM8711 is the best replacement for TLP2368.

    • ISOM8110 is the best replacement for TLP291-4. However, this is a 4-channel device. Currently only single channel options are available.

    Best,
    Andrew

  • 0 in reply to Andrew J
    Expert 2315 points

    Hello Andrew,

    Thank you for your support.

    Could you also tell me about the following devices?
    ・TLP183
    ・TLP2309

    Best regards,
    DDdoor

  • 0 in reply to DDdoor
    TI__Mastermind 22155 points

    Hi DDdoor, 

    • ISOM8110 >> TLP183
    • ISOM8711 >> TLP2309 - this one is a little tricky. The most similar device would be ISOM8711 however it isn't an exact match, please evaluate if it is applicable to your system. 

    Best,
    Anderw

  • 0 in reply to Andrew J
    Expert 2315 points

    Hello Andrew,

    Thank you for your support.

    Regarding CTR, comparing the specs of ISOM8110 and TLP183, the CTR(MAX) is very different.
    For this reason, I am wondering if it is possible to replace it with ISOM8110.
    What should I think about this?

    ・ISO8110
    Current transfer ratio (CTR) at IF = 5 mA, VCE = 5V
    ISOM8110 : 100% to 155%

    ・TLP183
    Current transfer ratio (CTR) at IF = 5 mA, VCE = 5V
    TLP183 : 100% to 600%

    Best regards,
    DDdoor

  • +1 in reply to DDdoor
    TI__Mastermind 24885 points

    Hello DDdoor, 

    Generally a device with a tighter variance should work in an application with a wider range because the system will have to be designed with consideration for the full range, so a 100-155% should work in applications currently using 100% to 600%. 

    However, if there is a subset of the range that is generally used, then we are also in progress to release different CTR variants as shown on the datasheet:

    A different variant may be selected based on the application need. 

    Best,

    Michael