2pcs HCF4051 4051 IC 16 pin – 8 Channel analog Multiplexer/ Demultiplexer

The HEF4051B is an 8-channel analog multiplexer/demultiplexer with three address inputs (S1 to S3), an active LOW enable input (E), eight independent inputs/outputs (Y0 to Y7) and a common input/output (Z).

The device contains eight bidirectional analog switches, each with one side connected to an independent input/output (Y0 to Y7) and the other side connected to a common input/output (Z). With E LOW, one of the eight switches is selected (low-impedance ON-state) by S1 to S3.

With E HIGH, all switches are in the high impedance OFF-state, independent of S1 to S3. If break before make is needed, then it is necessary to use the enable input.