PCA9550DP,118 datasheet by NXP Semiconductors

PCA9550DP,118 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that PCA9550DP,118 can support?
  The PCA9550DP,118 can support I2C bus frequencies up to 400 kHz.
• How many GPIO pins can be controlled independently using PCA9550DP,118?
  The PCA9550DP,118 has 16 GPIO pins that can be controlled independently.
• Can PCA9550DP,118 be used as a level translator between 3.3V and 5V systems?
  Yes, the PCA9550DP,118 can be used as a level translator between 3.3V and 5V systems, as it is 5V tolerant and can operate from a 2.3V to 5.5V supply voltage.
• What is the maximum current that can be sourced or sunk by each GPIO pin?
  Each GPIO pin can source or sink up to 25mA of current.
• Does PCA9550DP,118 have built-in pull-up resistors on the I2C bus?
  No, the PCA9550DP,118 does not have built-in pull-up resistors on the I2C bus. External pull-up resistors are required.