PCA8550D,118 datasheet by NXP Semiconductors

PCA8550D,118 Frequently Asked Questions (FAQs)

• What is the recommended operating voltage range for PCA8550D,118?
  The recommended operating voltage range for PCA8550D,118 is 2.3V to 5.5V, with a typical voltage of 3.3V.
• How do I configure the PCA8550D,118 for I2C or SMBus interface?
  The PCA8550D,118 can be configured for I2C or SMBus interface by setting the appropriate logic levels on the SCL and SDA pins. For I2C, SCL and SDA should be pulled up to VCC, while for SMBus, they should be pulled up to VCC through a resistor.
• What is the maximum clock frequency supported by PCA8550D,118?
  The PCA8550D,118 supports clock frequencies up to 400 kHz for I2C and 100 kHz for SMBus.
• How do I handle the power-on reset (POR) and brown-out detection (BOD) features of PCA8550D,118?
  The PCA8550D,118 has an internal POR and BOD circuitry that resets the device during power-up or brown-out conditions. The POR and BOD thresholds can be adjusted using external resistors and capacitors.
• Can I use PCA8550D,118 in a 5V system?
  Yes, the PCA8550D,118 can be used in a 5V system, but it's essential to ensure that the input voltage does not exceed the maximum rating of 5.5V. Additionally, the output voltage should be limited to 5V to prevent damage to the device.