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  • ISO1641: output buffer voltage of ISO1641 is high as a risk

    TI Thinks Resolved
    Part Number: ISO1641 Other Parts Discussed in Thread: TCA9800 , Hi team, customer Master SOC VIL is 0.54V, so they think our buffer output 0.65V (VoL1) is too high to be read correctly , is there any workaround we can do to lower down this 0.65V?

  • ISO1641: Hot Plugging Waveforms

    TI Thinks Resolved
    Part Number: ISO1641 Other Parts Discussed in Thread: TCA9511A , TCA4307 , Hello, The system I have is a back-plane board where power modules can hot plug into. Below screen shot is triggered on the hot-plug event. Blue trace is I2C bus side SDA, and yellow…
    • Answered

  • ISO1641: Not Getting Pulled Down to Zero

    Resolved
    Part Number: ISO1641 Hello, We have implemented an isolated I2C Bus using ISO1641BDR. Communication works properly. No communication errors are occurring says our FW team. Not sure why the image below is so hazy; But, the Yellow trace is micro-controller…
    • Resolved
    • Answered

  • BQ76942: Isolated I2C Communication with ISO1641

    Resolved
    Part Number: BQ76942 Other Parts Discussed in Thread: ISO1641 , , ISO1640 Hi all, this is a continuation of my previous post on the Isolation Forum: https://e2e.ti.com/support/isolation-group/isolation/f/isolation-forum/1340104/5105191 I've been trying …
    • Resolved

  • ISO1641: ISO1641B: SCL signals clipping

    Part Number: ISO1641 Other Parts Discussed in Thread: ISO1640 Hi, we're trying the isolator ISO1641B to isolate I2C communication. Below is the schematic: As the test circuit, both the master and slave devices are Arduino Uno operating at 5V. We're…
    • Answered

  • ISO1641: Voltage Input threashold values correct?

    Resolved
    Part Number: ISO1641 Hello Team, My customer found a confusing specification in our datasheet. We have the following specification: I f I see this correctly, then the threshold where we recognize high and low could possibly overlap, namely exactly when…
    • Resolved
    • Answered

  • RE: ISO1641: Unable to communicate with one specific slave device

    Resolved
    Hi Andrew, The issue has been resolved. It turns out that the BQ76942 does, indeed, drive the SCL signal low, to perform Clock Stretching. Since the ISO1641 has a unidirectional clock, the MCU was not able to support the clock stretching. The solution is…

  • ISO1640: Can ISO1640 be used as ISO1641

    TI Thinks Resolved
    Part Number: ISO1640 Other Parts Discussed in Thread: ISO1641 Hi expert, Can Iso1640 be used as Iso1641? Only use one scl, and how to configure the another Scl? Thanks

  • ISO1641: Question regarding VOL output level of Side 1

    TI Thinks Resolved
    Part Number: ISO1641 Other Parts Discussed in Thread: INA237 , , ISO1640 , TCA9803 Hi, We are using INA237 with ISO1641 in our application. Both sides are operating at 3.3V. The side 2 of ISO1641 is connected to INA237 and this part is fine. However, the…
    • Answered

  • ISO1641: Do we need a buffer between INA237 and ISO1641

    Resolved
    Part Number: ISO1641 Other Parts Discussed in Thread: INA237 , , ISO1640 , INA226 , TCA9517A , TCA9800 Hi Team, We want to use I2C to output power telemetry data. But checked their H/L threshold voltage, INA237 consider 0 - 0.4 V as L. Will ISO1641 be able…
    • Resolved

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