PCA9515AD datasheet by Texas Instruments

PCA9515AD Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that PCA9515AD can support?
  The PCA9515AD can support I2C bus frequencies up to 400 kHz, but it's recommended to operate at 100 kHz or lower for reliable operation.
• Can PCA9515AD be used as a level shifter for other communication protocols besides I2C?
  While PCA9515AD is primarily designed for I2C bus voltage translation, it can be used for other communication protocols like SPI or UART, but it's not recommended as it may not provide the necessary signal conditioning and may not meet the protocol's specific requirements.
• How do I ensure that the PCA9515AD is properly powered and biased?
  To ensure proper operation, the PCA9515AD requires a stable power supply (VCC) and a bias voltage (VBIAS) that meets the recommended operating conditions. VCC should be in the range of 2.3V to 5.5V, and VBIAS should be in the range of 1.8V to 5.5V. Additionally, decoupling capacitors should be used to filter out noise and ensure stable operation.
• What is the maximum current that PCA9515AD can sink or source?
  The PCA9515AD can sink or source up to 10 mA of current per I/O pin, but it's recommended to limit the current to 5 mA or less to ensure reliable operation and prevent overheating.
• Can PCA9515AD be used in a multi-master I2C bus configuration?
  Yes, PCA9515AD can be used in a multi-master I2C bus configuration, but it's essential to ensure that the masters are properly synchronized and that the bus is properly terminated to prevent bus contention and data corruption.