PCA9626B,118 datasheet by NXP Semiconductors

PCA9626B,118 Frequently Asked Questions (FAQs)

• What is the maximum current that the PCA9626B can sink or source?
  The PCA9626B can sink or source up to 10mA per pin, but the total current should not exceed 50mA.
• How do I configure the PCA9626B for I2C-bus or SMBus interface?
  The PCA9626B is configured for I2C-bus interface by default. To configure it for SMBus interface, connect the SCL pin to VCC through a 1kΩ resistor.
• What is the purpose of the reset pin (RST) on the PCA9626B?
  The reset pin (RST) is an active-low input that resets the PCA9626B to its default state. It is recommended to connect it to VCC through a 1kΩ resistor.
• How do I ensure that the PCA9626B is properly powered down when not in use?
  To properly power down the PCA9626B, ensure that the VCC pin is connected to a power source that can be switched off, and that the EN pin is connected to a logic low signal.
• What is the maximum frequency of operation for the PCA9626B?
  The PCA9626B can operate up to 400 kHz in I2C-bus mode and up to 100 kHz in SMBus mode.