The disclosure relates to a lead including a connector for connection to a generator, a demultiplexing circuit receiving at its input on the first conductors of the electrical control signals from the control bus and whose output is connected to a plurality of second conductors contained in the lead and connected to the lead electrodes. The lead further includes a gate and connection circuit component having a body forming a support for an integrated circuit for demultiplexing and defining a set of connection cavities with the second conductor distributed at the periphery of the body around a general axis of the body, and a plurality of connecting elements embedded in the body material, and emerging at an element region and supporting the circuit at respective cavities. The gate and connection circuit component is advantageously made of ceramic-metal.