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  • PCA9546A: PCA9546A power remove LTC2616

    Resolved
    Part Number: PCA9546A Other Parts Discussed in Thread: SN74LV4066A Hi, I want to use 4 IC I2C DAC LTC2616 using the same I2C of the microcontroller. In order to save power consumption I will place a power switch for each one VCC Power. This is the comment…
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  • PCA9546A: PCA9546A and PCA9517ADP schematic review

    Part Number: PCA9546A Other Parts Discussed in Thread: PCA9517 , Hi Can you help to review the following cirucit? We find there is no ACK from slave device.
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  • PCA9546A: PCA9546A issue

    Resolved
    Part Number: PCA9546A HI, I would like to confirm whether the PCA9546A can be used in 1.8V for SMBus any individual SCn/SDn channel. in spec, page 11 8.3 Feature Description Depending on the application, voltage translation of the I2C bus can also be…
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  • PCA9546A: Thermal Resistance

    Part Number: PCA9546A Hello Team, Can you share with us the thermal resistance of PCA9546ARGVR? It seems that the datasheet only contains the R θJA Junction-to-ambient thermal resistance. Regards, Renan
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  • PCA9546A: PCA9546A RGV Sample

    Resolved
    Part Number: PCA9546A Hi TIer, We are building a proto-type board for a high-volume customers, and I understand the global part shortage but is there any chance we could request for 10 samples of PCA9546A in RGV? Thank you, Jason
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  • PCA9546A: PCA9546A not passing through the I2C commands to the devices after the switch

    Resolved
    Part Number: PCA9546A Hi TIer, I changed the schematic based on the inputs I got from the E2E and here is the schematic. At CH0, I have four I2C MUX connected, and here is one of them. I am using a PMBUS to run the communication. I can write to the…
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  • PCA9546A: PCA9546A schematic review request

    TI Thinks Resolved
    Part Number: PCA9546A Other Parts Discussed in Thread: TCA9543A Hi TIer, Will you help to take a look on the schematic and let us know if you have any comments/concerns? Thank you, Jason
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  • PCA9546A: Device Reset

    Resolved
    Part Number: PCA9546A A few questions about reset: The data sheet 8.4.1 states "The /RESET input must be connected to VCC through a pull-up resistor". I have a design where the /RESET line is driven from a TTL output from an MCU. The MCU a…
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  • PCA9546A: SDA is stuck at low

    Resolved
    Part Number: PCA9546A We are testing OSEPP I²C Expansion Shield, the board is powered by connect Pin3 of JP5 to 5V and pin4 of JP5 to GND. without connect to another devices, the pin15 of PCA9546 'SEN_SDA' is held low. Can you enlighten me what could be…
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  • PCA9546A: PCA9546A Cad footprint does not match datasheet

    Resolved
    Part Number: PCA9546A Hi TIer, I downloaded the cad file for PCA9546A in RGV. As you can see below, the pin spacing is different between top/bottom and left/right. On the right is the CAD file generated for Allegro 17.2 from TI CAD site for this particular…
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