Abstract: An electronic device for controlling oscillation of an output voltage about a final value includes a semiconductor substrate, and at least one output stage on the semiconductor substrate. The at least one output stage includes at least one output transistor for providing an output voltage to an external load connected thereto. The output transistor includes a plurality of transistor legs connected in parallel and having different channel lengths. Each transistor leg is individually turned on and at different times for controlling oscillation of the output voltage about the final value.

Abstract: A CMOS output buffer circuit includes a final amplifier stage having a pull-up transistor and a pull-down transistor connected between a voltage supply and ground and having a common output node, and a control circuitry for driving the final amplifier stage including a first logic gate supplied with an input data signal, the first logic gate driving the pull-up transistor, a second logic gate supplied with said input data signal, the second logic gate driving the pull-down transistor. The pull-up transistor has a bulk electrode connected to a switchable bulk line; an auxiliary circuit is provided which as long as a voltage of the output node is not higher than said supply voltage keeps said switchable bulk line connected to the voltage supply. The first logic gate includes circuitry for transferring the voltage of the output node to said switchable bulk line when the voltage of the output node exceeds the supply voltage.