Abstract: A receiver circuit has a high threshold of 3.3÷2 volts and maximum noise margin. This is achieved by making two transistors in the receiver have channel resistances, under the condition whereas input line carries 3.3÷2 volts and a control line carries 0 volts, that generate an output signal as a first resistance ratio which when multiplied by a supply voltage equals 3.3÷2 volts. Further, the receiver also has a low threshold of 2.5÷2 volts and maximum noise margin. This is achieved by making the above two transistors, plus two other transistors in the receiver, have respective channel resistances under the condition where the input line carries 2.5÷2 volts and the control signal line carries 3.3 volts, that generate the output signal as a second resistance ratio which when multiplied by the supply voltage again equals 3.3÷2 volts.