PCA9554BS3,118 datasheet by NXP Semiconductors

PCA9554BS3,118 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that PCA9554BS3,118 can support?
  The PCA9554BS3,118 can support I2C bus frequencies up to 400 kHz.
• How many GPIO pins can be controlled independently using PCA9554BS3,118?
  The PCA9554BS3,118 has 16 GPIO pins that can be controlled independently.
• What is the maximum current that PCA9554BS3,118 can sink or source per GPIO pin?
  The PCA9554BS3,118 can sink or source up to 25 mA per GPIO pin.
• Can PCA9554BS3,118 be used as a level translator between different voltage domains?
  Yes, the PCA9554BS3,118 can be used as a level translator between different voltage domains, supporting voltage levels from 1.65 V to 5.5 V.
• Does PCA9554BS3,118 have built-in pull-up resistors on the GPIO pins?
  No, the PCA9554BS3,118 does not have built-in pull-up resistors on the GPIO pins. External pull-up resistors are required if needed.