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  • ISO1540-Q1: Acknowledge level issue on interface with TCA9511A

    Resolved
    Part Number: ISO1540-Q1 Other Parts Discussed in Thread: TCA9511A , ISO1540 , TMS320F28386D , Hi, On our test setup, we have the following summarized schematic: It doesn't show the routing length or the different connectors, basically the board (left part…
    • Resolved
    • Answered

  • ISO1540-Q1: ISO1540-Q1 maximum ratings

    Resolved
    Part Number: ISO1540-Q1 Other Parts Discussed in Thread: ISO1540 , ISO1640 Hi, In the ISO1540-Q1 data sheet's absolute maximum table, it mentions that the SDA and SCL lines for either side should not exceed VDDx + 0.5V So does that mean that the part…
    • Resolved

  • ISO1540-Q1: Can the Gnd on one of the isolated sides be above zero potential.

    TI Thinks Resolved
    Part Number: ISO1540-Q1 Hey there, I am trying to isolate a circuit's I2C signals. This circuit has a Gnd which is raised above 0V. The VCC is at 67V and the Gnd is raised to 62V. will that pose a problem? asking this cause I cant simulate the IC…
    • Answered

  • BQ78350-R1: how to design isolation SMBus interface

    Resolved
    Part Number: BQ78350-R1 Other Parts Discussed in Thread: BQ76940 , BQ78350 , ISO1540 , ISO1540-Q1 , Dear TI expert, i use BQ78350+BQ76940 design one low side driver BMS, i want to design isolation SMbus interface, how to design it? have a nice day!
    • Resolved
    • Answered

  • ISO1540-Q1: Reinforced Isolation version

    Resolved
    Part Number: ISO1540-Q1 Hello, ISO1540-Q1 meets basic isolation. Do you have any plan of ISO1540-Q1 or any other I2C part to meet reinforced isolation. Best regards, H.Someno
    • Resolved

  • ISO1540-Q1: SMBus and I2C Application

    TI Thinks Resolved
    Part Number: ISO1540-Q1 Other Parts Discussed in Thread: TCA9517A , ISO1541 , ISO1540 , BQ40Z50 Hello Support team: I met SMBus programming issue cause by noise or longer communication line. Project diagram as below; 1. The host system(MCU) SMBus + ISO1540Q1…
    • Answered

  • ISO1540-Q1: Is the host affected if the VCC1 and VCC2 are off?

    Resolved
    Part Number: ISO1540-Q1 Hello, I am using the ISO1540-Q1 with VCC1 and VCC2 tied together to the supply of the guest system. So if the guest is powered off (VCC1 and VCC2 off), will this cause any interference on the host side? Regards
    • Resolved
    • Answered

  • ISO1540-Q1: Connection to side 1 and side 2

    Resolved
    Part Number: ISO1540-Q1 Other Parts Discussed in Thread: ISO1540 Hello, My customer is designing I2C using ISO540 - Q1, There is a part with less margin against device specification. Would you please let me know if they can avoid this in the following way…
    • Resolved

  • RE: I2C to I2C bridge with opto-isolation

    Hi Frank, Thanks for your response. The isolated I2C devices that we currently have in our portfolio are ISO1640, ISO1641, ISO1540, ISO1541, ISO1540-Q1 and ISO1541-Q1. I understand the stock might not be available all the time due to current high demand…

  • ISO1540: Do you have ISO1540 datasheet version SLLSEB6F?

    TI Thinks Resolved
    Part Number: ISO1540 Hello guys, A few of my customers are using ISO1540 for their products in mass production. About 2 month ago, they received ISO1540 PCN(Product Change Notice). The document says that the chip design has been changed and the datasheet…

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