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  • TCA4307: How do I choose between TCA4307 and TCA9511A?

    Resolved
    Part Number: TCA4307 Other Parts Discussed in Thread: TCA9511A , Hi, The TCA4307 and TCA9511A have very similar specs, and as far as I can see are pin-to-pin electrically compatible (contrary to website). The only difference I can see is that the TCA4307…
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    • Answered

  • TCA4307: SDAI / SDAO data mismatch

    Resolved
    Part Number: TCA4307 Other Parts Discussed in Thread: TCA4311 , TCA9511A Hi support team During the evaluation of TCA4307 with our new product, I found sometimes SDAI and SDAO do not match as attached picture. Could you please let me know the root cause…
    • Resolved
    • Answered

  • TCA4307: Can I place the i2c hot swap buffer on the "backplane"?

    Resolved
    Part Number: TCA4307 Hi, I'd like to use something like the TCA4307 to support hot swap on an i2c bus. I notice in the datasheet that it is most normal to place this device on the removable peripheral card, however I would prefer to avoid that for…
    • Resolved
    • Answered

  • RE: TCA4307: pre-charge circuitry work condition at hot-swap insertion when EN pin controlled by GPIO

    Resolved
    Hi Zach, Here is a scopeshot of the TCA9511A power up sequence. The Blue waveform is Vcc, Purple/pink is EN held low, and Yellow is SDAIN where you can see the pre-charge turns on even while EN is held low. -Bobby
    • Answered

  • TCA4307: Performance impact on the IC TCA4307DGKR when a magnet is put in proximity (1-4mm) of the IC

    Resolved
    Part Number: TCA4307 Hello, I got a question from my mechcanical designer asking me what will be the performance/reliability impact on the TCA4307 when this IC is in proximity (1-4mm) of a magnet (for example this magnet: https://www.mcmaster.com/57005K91…
    • Resolved

  • TCA4307: Does adding a TCA4307 on host part improve the maximal length of cable ?

    TI Thinks Resolved
    Part Number: TCA4307 Other Parts Discussed in Thread: TCA9800 Hello, I have a host with an I2C master that will be connected to an I2C slave device. I want to use the TCA4307 on slave side to benefits of the hot swap feature. Should I use a TCA4307 on…

  • TCA4307: Powered-off high-impedance I2C pins

    Answer Suggested
    Part Number: TCA4307 Hello, I am designing a host with an I2C master that is connected to a I2C slave device. Most of the time, the host is deep sleeping, and I want to make sure the system consumes very low power when deepsleeping. In deepsleep, the…
    • Answered

  • RE: TCA9511A: Device to isolate I2C slave from bus when powered down.

    Resolved
    Hi Jeff, Hot swap / hot insertion means that the device can be plugged into a live backplane from an external PCB without the need to power down the backplane first. Stuck bus-recovery on the TCA4307 will automatically disconnect the bus if it detects…

  • RE: TCA9802: I2C application with multiple responders

    Hi Danilo, I agree with Clemen's response. If you have 50 I2C targets downstream, you would need to separate them if you were trying to stay within I2C standard for bus cap limitation. You can use the same TCA980x or TCA9517 to help you seperate the…

  • RE: TCA4311A: Does the in and out mark for the SCK and SDA have some means?

    Hi Liz, I just wanted to first point out that I do not recommend using the TCA4311. I always recommend to go with the or upgrade to TCA4307 which comes with the stuck bus recovery feature. Or you could go with the TCA9511 which is just an updated version…

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