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  • PCA9546A: Dual Master Device Application

    Part Number: PCA9546A Our application uses two FPGAs to simultaneously control this chip, with one main device and one backup device. If one device has an issue, the other can be backed up. However, in this application, there is a problem with the SCL…

  • PCA9546A: Dual Master Device Application

    TI Thinks Resolved
    Part Number: PCA9546A Our application uses two FPGAs to simultaneously control this chip, with one main device and one backup device. If one device has an issue, the other can be backed up. However, in this application, there is a problem with the SCL…

  • PCA9546A: PCA9546A and PCA9517ADP schematic review

    Part Number: PCA9546A Other Parts Discussed in Thread: PCA9517 , Hi Can you help to review the following cirucit? We find there is no ACK from slave device.
    • Answered

  • PCA9546A: PCA9546A issue

    Resolved
    Part Number: PCA9546A HI, I would like to confirm whether the PCA9546A can be used in 1.8V for SMBus any individual SCn/SDn channel. in spec, page 11 8.3 Feature Description Depending on the application, voltage translation of the I2C bus can also be…
    • Resolved

  • PCA9546A: Thermal Resistance

    Part Number: PCA9546A Hello Team, Can you share with us the thermal resistance of PCA9546ARGVR? It seems that the datasheet only contains the R θJA Junction-to-ambient thermal resistance. Regards, Renan
    • Answered

  • PCA9546A: PCA9546A RGV Sample

    Resolved
    Part Number: PCA9546A Hi TIer, We are building a proto-type board for a high-volume customers, and I understand the global part shortage but is there any chance we could request for 10 samples of PCA9546A in RGV? Thank you, Jason
    • Resolved
    • Answered

  • PCA9546A: PCA9546A not passing through the I2C commands to the devices after the switch

    Resolved
    Part Number: PCA9546A Hi TIer, I changed the schematic based on the inputs I got from the E2E and here is the schematic. At CH0, I have four I2C MUX connected, and here is one of them. I am using a PMBUS to run the communication. I can write to the…
    • Resolved

  • PCA9546A: PCA9546A schematic review request

    TI Thinks Resolved
    Part Number: PCA9546A Other Parts Discussed in Thread: TCA9543A Hi TIer, Will you help to take a look on the schematic and let us know if you have any comments/concerns? Thank you, Jason
    • Answered

  • PCA9546A: PCA9546A Cad footprint does not match datasheet

    Resolved
    Part Number: PCA9546A Hi TIer, I downloaded the cad file for PCA9546A in RGV. As you can see below, the pin spacing is different between top/bottom and left/right. On the right is the CAD file generated for Allegro 17.2 from TI CAD site for this particular…
    • Resolved
    • Answered

  • PCA9546A: Device Reset

    Resolved
    Part Number: PCA9546A A few questions about reset: The data sheet 8.4.1 states "The /RESET input must be connected to VCC through a pull-up resistor". I have a design where the /RESET line is driven from a TTL output from an MCU. The MCU a…
    • Resolved

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