PCA9511D,112 datasheet by NXP Semiconductors

PCA9511D,112 Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that PCA9511D,112 can support?
  The PCA9511D,112 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,112 as a level shifter for other communication protocols besides I2C?
  No, the PCA9511D,112 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,112 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). Also, ensure that the input and output sides have separate power domains and decoupling capacitors.
• What is the maximum capacitance of the I2C bus that PCA9511D,112 can drive?
  The PCA9511D,112 can drive I2C bus capacitances up to 400 pF, but it's recommended to keep the bus capacitance below 200 pF for reliable operation.
• Can I use PCA9511D,112 in a hot-swappable I2C bus application?
  Yes, the PCA9511D,112 is designed to support hot-swapping and can tolerate the removal and insertion of devices on the I2C bus without causing damage or data corruption.