PCA9534ARGTRG4 datasheet by Texas Instruments

PCA9534ARGTRG4 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that the PCA9534 can support?
  The PCA9534 can support I2C bus frequencies up to 400 kHz, but it is recommended to operate at 100 kHz or lower for reliable operation.
• How do I configure the PCA9534 to operate in 8-bit mode?
  To configure the PCA9534 to operate in 8-bit mode, set the A0 and A1 pins to VCC or GND to select the I2C address, and then write the configuration register (register 0x03) with the desired 8-bit mode setting.
• What is the maximum current that the PCA9534 can sink or source on each output pin?
  The PCA9534 can sink or source up to 25 mA of current on each output pin, but the total current drawn from the device should not exceed 100 mA.
• How do I reset the PCA9534 to its default state?
  To reset the PCA9534 to its default state, pull the RESET pin low for at least 1 ms. This will reset the device to its power-on default state.
• Can I use the PCA9534 to drive inductive loads such as relays or solenoids?
  No, the PCA9534 is not designed to drive inductive loads such as relays or solenoids. It is recommended to use an external driver or buffer to drive such loads.