Patent ID: 8253442

Claim:
An apparatus comprising: a channel; a transmitter configured to transmit a signal over the channel, the transmitter comprising: a first switch coupled to a first current source and to an output node, the first switch being configured to conduct the first current source to the output node when activated, and to be an open circuit when deactivated; and a second switch coupled to a second current source and to the output node, the second switch being configured to conduct the second current source to the output node when activated, and to be an open circuit when deactivated; and a receiver comprising: a first inverter including an input and an output, the input of the first inverter being configured to receive the signal transmitted over the channel; a second inverter including an input electrically coupled to the output of the first inverter; and an explicit resistor having a first terminal and a second terminal, wherein the first terminal is directly coupled to the input of the first inverter, and wherein the second terminal is directly coupled to the output of the first inverter.