PCA9512ADP datasheet by NXP Semiconductors

PCA9512ADP Frequently Asked Questions (FAQs)

• What is the maximum frequency of operation for PCA9512ADP?
  The PCA9512ADP can operate up to 400 kHz, but it's recommended to operate at 100 kHz or lower for reliable operation.
• Can I use PCA9512ADP as a level shifter for 5V to 3.3V or vice versa?
  Yes, PCA9512ADP can be used as a level shifter for 5V to 3.3V or vice versa, but it's essential to ensure that the input voltage is within the recommended operating range (VCC = 2.3V to 5.5V) and the output voltage is within the recommended output voltage range (VOUT = 2.3V to 5.5V).
• How do I handle the enable pin (EN) in PCA9512ADP?
  The enable pin (EN) is an active-low input that enables or disables the translator. When EN is low, the translator is enabled, and when EN is high, the translator is disabled. It's recommended to tie EN to VCC or GND through a pull-up or pull-down resistor to ensure proper operation.
• What is the recommended power-up sequence for PCA9512ADP?
  The recommended power-up sequence for PCA9512ADP is to power up VCC first, followed by the input signals. This ensures that the internal circuitry is properly initialized before the input signals are applied.
• Can I use PCA9512ADP in a bidirectional bus translation application?
  Yes, PCA9512ADP can be used in a bidirectional bus translation application, but it's essential to ensure that the direction of data transfer is controlled by the system design, as the PCA9512ADP does not have built-in direction control.