Patent ID: 7956645
Filing Date: 2011-06-07
Classification: H03K

Abstract:
1. An apparatus, comprising: an input implemented to receive a differential input signal that includes a first input signal and a second input signal; first and second switches; first and second inverting switches; a constant current source such that a first end of the constant current source is grounded and a second end of the constant current source directly connects to a first end of the first switch and a first end of the second switch; a resistor that directly connects between a second end of the first switch and a second end of the second switch; and an output implemented to output a differential output signal that includes a first output signal and a second output signal; and wherein: the first input signal is provided to the second inverting switch and the second switch such that the first input signal ensures that the second inverting switch is closed when the second switch is open; the second input signal is provided to the first inverting switch and the first switch such that the second input signal ensures that the first inverting switch is closed when the first switch is open; a first end of the first inverting switch directly connects to a power supply and a second end of the first inverting switch directly connects to the second end of the first switch; a first end of the second inverting switch directly connects to the power supply and a second end of the second inverting switch directly connects to the second end of the second switch the first output signal, having a respective high voltage level being that of the power supply, is output from a first end of the resistor; and the second output signal, having a respective high voltage level being that of the power supply, is output from a second end of the resistor.