An intravascular ultrasound, IVUS, device, comprising: a flexible elongate member; an ultrasound scanner assembly disposed at a distal portion of the flexible elongate member, the ultrasound scanner assembly including an ultrasound transducer array, a logic device, and a voltage divider; an interface coupler disposed at a proximal portion of the flexible elongate member; and a cable disposed within and extending along a length of the flexible elongate member between the ultrasound scanner assembly and the interface coupler, the cable including four conductors (502, 504, 506, 508) electrically coupling the ultrasound scanner assembly and the interface coupler; wherein the voltage divider is arranged to supply an operating voltage (Vdd) to the logic device, and wherein a first pair of conductors of the four conductors is electrically coupled to the voltage divider, and the first pair of conductors is arranged to supply an input voltage to the voltage divider; an interface decoder electrically coupled to the first pair of conductors, and wherein the first pair of conductors is arranged to transmit a control signal from the interface coupler to the interface decoder; and wherein the interface decoder comprises a line receiver configured to translate a three-state (PIM+, PIM-) differential signal pair from the first pair of conductors into binary control signals to configure a transmit controller and a receive controller to at least one of: designate transmitting and receiving transducers of the ultrasound transducer array, configure a length, or a duration, or a frequency, of a waveform emitted by the ultrasound transducer array; wherein a second pair of conductors of the four conductors comprises a high voltage signal for supplying a DC voltage to high power driver circuits to power the ultrasound transducers when in transmit mode, and a ground signal for providing a common ground for circuitry of the ultrasound scanner assembly. a flexible elongate member; an ultrasound scanner assembly disposed at a distal portion of the flexible elongate member, the ultrasound scanner assembly including an ultrasound transducer array, a logic device, and a voltage divider; an interface coupler disposed at a proximal portion of the flexible elongate member; and a cable disposed within and extending along a length of the flexible elongate member between the ultrasound scanner assembly and the interface coupler, the cable including four conductors (502, 504, 506, 508) electrically coupling the ultrasound scanner assembly and the interface coupler; wherein the voltage divider is arranged to supply an operating voltage (Vdd) to the logic device, and wherein a first pair of conductors of the four conductors is electrically coupled to the voltage divider, and the first pair of conductors is arranged to supply an input voltage to the voltage divider; an interface decoder electrically coupled to the first pair of conductors, and wherein the first pair of conductors is arranged to transmit a control signal from the interface coupler to the interface decoder; and wherein the interface decoder comprises a line receiver configured to translate a three-state (PIM+, PIM-) differential signal pair from the first pair of conductors into binary control signals to configure a transmit controller and a receive controller to at least one of: designate transmitting and receiving transducers of the ultrasound transducer array, configure a length, or a duration, or a frequency, of a waveform emitted by the ultrasound transducer array; wherein a second pair of conductors of the four conductors comprises a high voltage signal for supplying a DC voltage to high power driver circuits to power the ultrasound transducers when in transmit mode, and a ground signal for providing a common ground for circuitry of the ultrasound scanner assembly.