PCA9515ADGKR datasheet by Texas Instruments

PCA9515ADGKR Frequently Asked Questions (FAQs)

• What is the maximum frequency of the I2C bus that PCA9515ADGKR can support?
  The PCA9515ADGKR can support I2C bus frequencies up to 400 kHz, but it's recommended to limit the frequency to 100 kHz for reliable operation.
• How do I configure the PCA9515ADGKR for bidirectional voltage translation?
  To configure the PCA9515ADGKR for bidirectional voltage translation, connect the VCC pin to the higher voltage supply, and the VCC1 pin to the lower voltage supply. Then, connect the SCL/SDA pins to the corresponding I2C bus signals.
• What is the maximum voltage difference that PCA9515ADGKR can handle?
  The PCA9515ADGKR can handle a maximum voltage difference of 5.5V between the VCC and VCC1 pins.
• Can I use PCA9515ADGKR for level shifting between 1.8V and 5V?
  Yes, the PCA9515ADGKR can be used for level shifting between 1.8V and 5V. However, ensure that the input voltage on the VCC pin is at least 1.8V to ensure proper operation.
• How do I ensure that the PCA9515ADGKR operates correctly in a noisy environment?
  To ensure correct operation in a noisy environment, use a decoupling capacitor (e.g., 0.1uF) between the VCC and GND pins, and consider adding a ferrite bead or a series resistor to the I2C bus lines to reduce noise.