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PCA9548A: I2C clock stretching

Part Number: PCA9548A

Does the PCA9548A support I2C clock stretching?

  • Hi Mike,

    The device supports clock stretching in the sense that the device will pass a clock low signal from a downstream slave device through to the main SDA/SCL channels where the master is expected to be.

    The device itself has no clock NFET so it does not ever drive the clock line low (by itself). This prevents it from locking the clock line low due to a bad power up situation.

    -Bobby