ZHCSJK2O October 2004 – September 2023 PCA9306
PRODUCTION DATA
For supplying power to the PCA9306 device, the VREF1 pin can be connected directly to a power supply. The VREF2 pin must be connected to the VDPU power supply through a 200-kΩ resistor. Failure to have a high-impedance resistor between VREF2 and VDPU results in excessive current draw and unreliable device operation. It is also worth noting, that in order to support voltage translation, the PCA9306 must have the EN and VREF2 pins shorted and then pulled up to VDPU through a high-impedance resistor.