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  • TCA9546A: I2C BUS failure mode

    TI Thinks Resolved
    Part Number: TCA9546A Other Parts Discussed in Thread: PCA9546A Tool/software: Hi, we encountered an I2C issue that appears to be related to abnormal behavior of the PCA9546. When the issue occurs, all I2C bus devices become non-functional. The system…

  • TCA9546A: TCA9546A channel length application

    Part Number: TCA9546A Tool/software: Hi Team do you have any recommendation about the channel for TCA9546A in I2C application? customer plan to use 400kHz and 10k pull up resistor BRs Brian
    • Answered

  • TCA9802: Whether TCA9546A can be located on B side

    Resolved
    Part Number: TCA9802 Other Parts Discussed in Thread: TCA9546A Tool/software: In my trial board, TCA9546A is connected on B side of TCA9802. Sometimes a slave device located in the opposite side of TCA9546A doesn't respond.... then I found my circuitry…
    • Resolved

  • TCA9546A: Pull up voltage of Reset Pin

    TI Thinks Resolved
    Part Number: TCA9546A Tool/software: Hi Team, I'm attaching our design section using TCA9546A. Here, the VCC is 1.8V, and we pull up the reset pin to 3.3V. Is there any issue with doing that?
    • Answered

  • TCA9546A: Junction Temperature for General Components

    Resolved
    Part Number: TCA9546A Tool/software: I am looking to figure out how Ti determines the junction temperature for the following devices. TXB0102DCURG4 TCA9517DGKRQ1 TCA9546APWR SN65LBC172A16DWR SN74LVC8T245PW SN65LBC174A16DWRG4
    • Resolved

  • TCA9546A: Channels not working on TCA9546A

    Part Number: TCA9546A So I'm having some strange behavior with a TCA9546A. I have two PCB's that's identical, and on one it works perfectly. On the other one it worked during first startup and initial tests. However now I lost one channel. CH0 is…

  • TCA9546A: High level Output voltage (VOH)

    TI Thinks Resolved
    Part Number: TCA9546A Tool/software: Hi TI Team, Please provide the VOH min value for TCA9546APWR (operating at 1V8). I can't found it in datasheet. Regards, Sathya

  • TCA9546A: i2c transaction failed when I sent value 2 to the control register of TCA9546A.

    Part Number: TCA9546A Hi sir, I am facing an issue with TCA9546A. Whenever I write value 2 to the control register of TCA9546A through i2c for selecting bus 1, that transaction and further transaction fail but when I write other values like 1, 4, and…
    • Answered

  • TCA9546A: Whether 3p3V bus to 3p3V and 1p8V bus switching can work with 3p3V Vcc supply

    Resolved
    Part Number: TCA9546A Tool/software: (reposted, as the original post seems disappeared. I want to use TCA9546A on my system with Vcc=3.3V supply. The main i2c bus to be connected is running at 3.3V (pulled-up to 3.3V line) and the two downstream buses…
    • Resolved

  • TCA9546A: Regarding pullup voltage on the output I2C channels

    TI Thinks Resolved
    Part Number: TCA9546A Tool/software: Hi we are using TCA9546APWR in our schematics design and following is our implementation(image 1). In this one o/p I2C channel,we have connected a level shifter and translating it to 3.3V signals(refer image 2). Can…

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