TCA9548ARGERQ1 datasheet by Texas Instruments

TCA9548ARGERQ1 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that the TCA9548A can support?
  The TCA9548A can support I2C bus frequencies up to 400 kHz.
• Can the TCA9548A be used to control multiple I2C buses with different voltage levels?
  Yes, the TCA9548A has a voltage range of 1.65 V to 5.5 V, allowing it to control I2C buses with different voltage levels.
• How do I configure the TCA9548A to use a specific I2C address?
  The TCA9548A has three address pins (A0, A1, and A2) that can be connected to VCC or GND to set the I2C address. The address can be calculated using the formula: 0x70 + (A2 << 2) + (A1 << 1) + A0.
• What is the maximum number of TCA9548A devices that can be connected on the same I2C bus?
  The maximum number of TCA9548A devices that can be connected on the same I2C bus is limited by the I2C bus capacitance and the pull-up resistor values. Typically, up to 8 devices can be connected on the same bus.
• How do I reset the TCA9548A?
  The TCA9548A can be reset by pulling the RESET pin low for at least 1 ms. This will reset the device to its default state.