PCA9544AD,118 datasheet by NXP Semiconductors

PCA9544AD,118 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that the PCA9544AD can support?
  The PCA9544AD can support I2C bus frequencies up to 400 kHz.
• Can the PCA9544AD be used to switch between multiple I2C buses with different voltage levels?
  Yes, the PCA9544AD can be used to switch between multiple I2C buses with different voltage levels, as long as the voltage levels are within the specified range of 1.8 V to 5.5 V.
• How do I ensure that the PCA9544AD is properly powered down to minimize power consumption?
  To ensure that the PCA9544AD is properly powered down, the EN pin should be pulled low, and the VCC pin should be connected to a power source that can be switched off.
• Can the PCA9544AD be used in applications that require hot-swapping of I2C devices?
  Yes, the PCA9544AD can be used in applications that require hot-swapping of I2C devices, as it has built-in protection against voltage and current surges.
• What is the maximum number of I2C devices that can be connected to the PCA9544AD?
  The PCA9544AD can support up to 4 I2C buses, each with a maximum of 8 devices, for a total of 32 devices.