• Resolved

TCA9517A: the conditon VCCA < VCCB

Part Number: TCA9517A

Hi all

Would you mind if we ask TCA9517A

The data sheet P12 shows "VCCA < VCCB".
If the condtion is VCCA = VCCB, it can not transmit the data between SCLA(or SDAA) and SCLB(or SDAB)?
And then, is it possible to use the condition VCCA = VCCB?

Or, should we use TCA4311A in case of VCCA = VCCB?

Kind regards,

Hirotaka Matsumoto

  • Hello Matsumoto-san,

    It is OK for VCCA and VCCB to be pulled up to the same power rail. In general, we recommend to not have VCCA exceed VCCB since this may cause higher VOL levels; you can read more about this in the following e2e post:


    Please let me know if you have any questions.

    Best regards,