CD4512 CMOS 8-channel data selector/multiplexer

The CD4512 CMOS 8-channel data selector/multiplexer is a general-purpose logic device designed to route one of eight independent input signals to a single output under digital control. Implemented in CMOS technology, it offers low quiescent current and high input impedance, making it suitable for battery-powered and low-power systems. The chip provides straightforward address-based selection of inputs, simplifying signal routing in systems that require multiplexing of multiple data lines.

Common uses include digital signal routing, input/output expansion, data acquisition front ends, test and measurement switching, and multiplexed sensor interfaces. The device can be used wherever a compact, reliable method is needed to select among several logic-level sources and deliver the chosen signal to downstream logic, conversion, or processing stages.

Designed for easy integration on breadboards or printed circuit boards, the CD4512 works well in prototyping and production environments. Its CMOS implementation minimizes loading on source signals and reduces standby power consumption. When used in larger systems, the multiplexer helps reduce wiring complexity and component count by consolidating multiple signal paths into a single controlled output.

System designers should consult the manufacturer’s datasheet for detailed electrical characteristics, recommended operating conditions, timing parameters, and recommended PCB layout practices before final implementation.