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  • ISO1641: ISO1641 certification status (UL/IEC) – datasheet shows “pending”, please confirm latest

    TI Thinks Resolved
    Part Number: ISO1641 Hi, ISO1641 datasheet indicates that certifications are pending. Could you please let us know the current certification status for UL and IEC standards? Thanks, Conor

  • ISO1641: SDA1, SCL1 pull-up voltage

    TI Thinks Resolved
    Part Number: ISO1641 Other Parts Discussed in Thread: ISO1640 Tool/software: Hi Is it okay to evaluate I2C communication with VCC1 set to 5V and SCL1 and SDA1 pulled up to 3.3V? I have created a board containing an isolated power supply, ADC, sensor,…

  • ISO1641: Do you have any I2C isolator parts that have VOL = 400mV max

    TI Thinks Resolved
    Part Number: ISO1641 Other Parts Discussed in Thread: TCA9517 , , LP5569 , ISO7731 , ISO6041 e2e, I noticed the ISO164x series has a VOL1 = 650mV (nom), 710mV (max). Do you have any I2C isolator parts that have VOL = 400mV max. For instance, this part…

  • 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: SCL not consistently passing from side 1 to side 2

    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…

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

    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…

  • ISO1641: is somehow more robust for applications that do not need the bidirectional clock vs ISO1640

    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…

  • 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…

  • 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…
    • 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…
    • Resolved

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