CD4555 CMOS Dual Binary to 1-of-4 Decoder/Demultiplexer

The CD4555 CMOS Dual Binary to 1-of-4 Decoder/Demultiplexer is a dual-channel logic IC that converts two-bit binary inputs into one-of-four active outputs per channel. Each section operates independently to route a single active output based on the binary input, or to demultiplex a serial data line into one of four parallel outputs. The device is built with CMOS technology to deliver low static power consumption, high noise immunity, and wide input voltage tolerance typical of CMOS logic families.This decoder/demultiplexer is suitable for a broad range of digital applications including address decoding, data routing, memory selection, and signal distribution in control and measurement systems. It integrates enable inputs to control each channel independently, allowing the part to be used in gated decoding or multiplexing schemes. The logic inputs are compatible with standard CMOS logic levels and the outputs present a defined logic state when inactive, simplifying interface to other digital circuitry.Designers will find the CD4555 useful when compact, dual-channel decoding or demultiplexing is required. The device is appropriate for prototyping, industrial control, embedded systems, and educational projects that require reliable, low-power decoding functions in a small package.