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  • TCA9802: Problem when connected to ISO1641: low state is not correctly transferred from side B to A

    Wojtek Jodlowski
    Wojtek Jodlowski
    TI Thinks Resolved
    Part Number: TCA9802 Other Parts Discussed in Thread: ISO1641 , TCA9509 Tool/software: We have processor driving side A of TCA9802 (2.2k pullups). Then side B of TCA9802 is connected to ISO1641 (side 1) - no other I2C device. Side 2 of ISO1641 is connected…
    • 24 days ago
    • Interface
    • Interface forum
  • ISO1641: SCL not consistently passing from side 1 to side 2

    Neal Wilding
    Neal Wilding
    TI Thinks Resolved
    Part Number: ISO1641 Tool/software: Hello, We are using the ISO1641 in an I2C level translation application with Side 1 at 3.3 V and side 2 at 5V. We do not need the isolation feature, so the grounds on both sides of the device are tied to our common…
    • 2 months ago
    • Isolation
    • Isolation forum
  • ISO1641: is somehow more robust for applications that do not need the bidirectional clock vs ISO1640

    Adam Torma
    Adam Torma
    TI Thinks Resolved
    Part Number: ISO1641 Other Parts Discussed in Thread: ISO1640 , Tool/software: e2e, I missed we couldn't support clock stretching with the ISO1641BDR and would appreciate some input on whether the ISO1641BDR is somehow more robust for applications…
    • 5 months ago
    • Isolation
    • Isolation forum
  • ISO1641: output buffer voltage of ISO1641 is high as a risk

    Fred Cheng
    Fred Cheng
    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?
    • over 1 year ago
    • Isolation
    • Isolation forum
  • ISO1641: Hot Plugging Waveforms

    William Mcknight
    William Mcknight
    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…
    • over 1 year ago
    • Isolation
    • Isolation forum
  • Answered
  • ISO1641: Not Getting Pulled Down to Zero

    William Mcknight
    William Mcknight
    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
    • over 1 year ago
    • Isolation
    • Isolation forum
  • ISO1641: ISO1641B: SCL signals clipping

    Yash Tambi
    Yash Tambi
    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…
    • over 1 year ago
    • Isolation
    • Isolation forum
  • Answered
  • BQ76942: Isolated I2C Communication with ISO1641

    Arush Thomas
    Arush Thomas
    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
    • over 1 year ago
    • Power management
    • Power management forum
  • Answered
  • ISO1641: Voltage Input threashold values correct?

    Jan Bock
    Jan Bock
    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
    • over 1 year ago
    • Isolation
    • Isolation forum
  • Answered
  • ISO1641: Unable to communicate with one specific slave device

    Arush Thomas
    Arush Thomas
    Resolved
    Part Number: ISO1641 Other Parts Discussed in Thread: BQ76942 , BQ76952 , , ISO1640 Hi all, I've been testing an ISO1641B IC to perform isolated I2C communication, between an MCU Master, and a BQ76942 AFE slave (address 0x60). Unfortunately I have been unable…
    • Resolved
    • over 1 year ago
    • Isolation
    • Isolation forum
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