TCA9539RGER datasheet by Texas Instruments

TCA9539RGER Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that the TCA9539RGER can support?
  The TCA9539RGER can support I2C bus frequencies up to 400 kHz.
• How do I configure the TCA9539RGER to operate in inverted mode?
  To configure the TCA9539RGER to operate in inverted mode, set the INVERT bit in the Configuration Register (address 0x03) to 1. This will invert the output polarity of the GPIO pins.
• What is the maximum current that the TCA9539RGER can sink or source per GPIO pin?
  The TCA9539RGER can sink or source up to 20 mA per GPIO pin.
• How do I reset the TCA9539RGER to its default state?
  To reset the TCA9539RGER to its default state, pull the RESET pin low for at least 1 ms. This will reset all registers to their default values.
• Can I use the TCA9539RGER as a level translator?
  Yes, the TCA9539RGER can be used as a level translator. It can translate voltage levels between 1.8 V and 5 V, making it suitable for use in mixed-voltage systems.