PCA9542APW,112 datasheet by NXP Semiconductors

PCA9542APW,112 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that the PCA9542APW,112 can support?
  The PCA9542APW,112 can support I2C bus frequencies up to 400 kHz, but it's recommended to limit it to 100 kHz for reliable operation.
• How do I configure the PCA9542APW,112 to work in dual-bus mode?
  To configure the PCA9542APW,112 in dual-bus mode, you need to set the SEL pin high and use the I2C bus to configure the device. Then, you can use the two separate I2C buses, Bus 0 and Bus 1, to control different devices.
• What is the maximum capacitance that the PCA9542APW,112 can drive on the I2C bus?
  The PCA9542APW,112 can drive up to 400 pF of capacitance on the I2C bus, but it's recommended to limit it to 200 pF for reliable operation.
• How do I reset the PCA9542APW,112?
  The PCA9542APW,112 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 power consumption of the PCA9542APW,112?
  The PCA9542APW,112 has a typical power consumption of 1.5 mA when operating at 3.3V and 25°C.