PCA9511D,118 datasheet by NXP Semiconductors

PCA9511D,118 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that PCA9511D,118 can support?
  The PCA9511D,118 can support I2C bus frequencies up to 1 MHz, but it's recommended to operate at 400 kHz or lower for reliable operation.
• Can I use PCA9511D,118 as a level shifter for other communication protocols besides I2C?
  No, the PCA9511D,118 is specifically designed for I2C bus level shifting and is not suitable for other communication protocols like SPI, UART, or GPIO.
• How do I ensure that the PCA9511D,118 is properly powered and biased?
  Make sure to connect VCC to a stable 1.8V to 5.5V power supply, and VREF to a stable reference voltage (usually VCC) or to an external reference voltage. Also, ensure that the input and output voltage levels are within the recommended operating range.
• What is the maximum capacitance that PCA9511D,118 can drive on the I2C bus?
  The PCA9511D,118 can drive up to 400 pF of capacitance on the I2C bus, but it's recommended to keep the total bus capacitance below 200 pF for reliable operation.
• Can I use PCA9511D,118 in a hot-swappable I2C bus application?
  Yes, the PCA9511D,118 is designed to support hot-swappable I2C bus applications, but ensure that the power supply and biasing are properly managed during the hot-swap event.