PCA8574D,518 datasheet by NXP Semiconductors

PCA8574D,518 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that PCA8574D,518 can support?
  The PCA8574D,518 can support I2C bus frequencies up to 400 kHz.
• Can PCA8574D,518 be used in 5V systems?
  Yes, PCA8574D,518 is 5V tolerant, but it's recommended to use a voltage regulator to ensure a stable 3.3V supply to the device.
• How do I reset the PCA8574D,518?
  The PCA8574D,518 can be reset by pulling the RESET pin low for at least 1 ms. This will reset the device to its default state.
• What is the maximum current that PCA8574D,518 can sink or source?
  The PCA8574D,518 can sink or source up to 25 mA per I/O pin.
• Can PCA8574D,518 be used in industrial temperature range?
  Yes, PCA8574D,518 is rated for operation in the industrial temperature range of -40°C to +85°C.