Abstract: The data transmission circuit generates the first and second data signals that are transferred respectively to first and second data lines after delaying or expanding a rising edge or a falling edge of an externally supplied data input signal, so that a crossover voltage of the data signals is established in accordance with the USB standard V1.1.

Abstract: The data transmission circuit generates the first and second data signals that are transferred respectively to first and second data lines after delaying or expanding a rising edge or a falling edge of an externally supplied data input signal, so that a crossover voltage of the data signals is established in accordance with the USB standard V1.1.

Abstract: A voltage regulator according to the present invention includes a programmable reference generator, a programmable output adjustor, an error amplifier, and an output driver. The programmable reference generator is responsive to a first programming signal and generates a reference voltage. The programmable output adjustor is responsive to a second programming signal and generates an output adjust voltage. The error amplifier generates an error voltage corresponding to a difference between the reference voltage and the output adjust voltage. The output driver drives a regulated output voltage in response to the error voltage. A capacitor is coupled between the regulated output voltage and a ground voltage to eliminate ripple components on the regulated voltage.