Inventors:
Wenwei Wang - Gilroy CA, US
International Classification:
H03K 17/687
Abstract:
An apparatus, system, and method are disclosed for grounding IC outputs. A first switching module turns on when an IC power supply voltage exceeds a base voltage. The first switching module is in communication with IC outputs and a common ground. The IC outputs are configured to be pulled up to the IC power supply voltage through pull-up resistors when a first voltage is driven lower than the base voltage. In addition, the first switching module connects the IC outputs to the common ground. A second switching module turns on, turns turn off the first switching module, disconnects the IC outputs from the common ground, and pulls the IC outputs up to the IC power supply voltage when the IC power supply voltage exceeds a minimum working voltage.