The TMUXHS4412 has two power modes, active/normal operating mode and standby/shutdown mode. During standby mode, the device consumes very little current to achieve ultra-low power in systems where power saving is critical. To enter standby mode, the PD control pin is pulled high through a resistor and must remain high. For active/normal operation, pull the PD control pin low to GND or dynamically controlled to switch between H or L.