1. A device or circuit that separates a single input signal into multiple output signals, reversing the function of a multiplexer.
Usage: technical; electronics and telecommunications

Examples

• The demultiplexer splits the combined data stream into separate channels for processing.
• In digital communications, a demultiplexer directs incoming signals to the correct output lines.
• The video demultiplexer extracts audio and video streams from a single cable.
• Engineers used a demultiplexer to distribute the satellite signal to multiple receivers.
• The demultiplexer's output depends on the control signals applied to its select pins.