Electronic device and operating method thereof

An electronic device including internal circuitry having an output terminal of an output signal, comprising:

• a pull-up resistance element coupled between a supply terminal of a first high voltage and the output terminal of the output signal to increase a voltage at the output terminal of the output signal towards the first voltage;
• a pull-down driving element coupled between the output terminal of the output signal and a supply terminal of a low voltage to selectively drive the output terminal of the output signal with the low voltage based on a control signal for the pull-down driving element;
• a main driver coupled between a supply terminal of a second high voltage and the supply terminal of the low voltage to drive an output terminal of the control signal with the second high voltage during a first transition period of the control signal and to drive the output terminal of the control signal with the low voltage during a second transition period of the control signal, based on an input signal of the main driver;
• and
• a sub driver coupled between the supply terminal of the second high voltage and the supply terminal of the low voltage to drive the output terminal of the control signal with the second high voltage during an initial period of the first transition period, the sub driver being disabled during the remaining period of the first transition period and the second transition period, based on the input signal of the main driver and the control signal for the pull-down driving element.

An operating method of an electronic device including a main driver, a sub driver, a pull-up resistance element, and a pull-down driving element, comprising:

• continuously supplying, by the pull-up resistance element, a first high voltage to an output terminal of an output signal regardless of a control signal;
• driving, by the main driver and the sub driver, an output terminal of the control signal with a second high voltage during an initial period of a first transition period of the control signal when an input signal transitions from a first voltage level to a second voltage level;
• driving, by the main driver, the output terminal of the control signal with the second high voltage during the remaining period of the first transition period of the control signal, and disabling the sub driver when the input signal transitions from the first voltage level to the second voltage level;
• and
• driving, by the pull-down driving element, the output terminal of the output signal with a low voltage based on the control signal.