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PCA9548A: non-expected device address 0x60h

Phong Le
Prodigy 550 points
Part Number: PCA9548A

According to datasheet, the I2C address is 70-77. Recently, we did I2C scan on that bus using PCA9548A and found some non-expected device address 0x60h. 

Currently we disconnect channel 0 of PCA9548A. will PCA9548A return any other I2C address if NC?

  • 0
    TI__Guru 62920 points
    Hi Phong,

    This device should only respond to addresses from 0x70 to 0x77. Do any other devices in your I2C tree have the address 0x60? If not, you may have some signal integrity issue on the I2C bus. If you could capture the master-side and slave-side SDA and SCL lines on an oscilloscope it should help to debug any issues.

    Max