PCA8574PW,118 datasheet by NXP Semiconductors

PCA8574PW,118 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that PCA8574PW,118 can support?
  The PCA8574PW,118 can support I2C bus frequencies up to 400 kHz.
• Can PCA8574PW,118 be used in 5V systems?
  Yes, PCA8574PW,118 is 5V tolerant, but it's recommended to use an external voltage regulator to ensure the internal voltage remains within the recommended operating range.
• How do I ensure that the PCA8574PW,118 is properly reset after power-on?
  The PCA8574PW,118 has a power-on reset circuit that resets the device after power-on. However, it's recommended to add an external reset circuit to ensure a clean reset signal.
• What is the maximum current that the PCA8574PW,118 can sink or source on its I/O pins?
  The PCA8574PW,118 can sink or source up to 25 mA on its I/O pins.
• Can PCA8574PW,118 be used in industrial temperature range applications?
  Yes, the PCA8574PW,118 is rated for operation in the industrial temperature range of -40°C to +85°C.