The HEF4053B is a triple single-pole double-throw (SPDT) analog switch, suitable for use as an analog or digital multiplexer/demultiplexer. Each switch has a digital select input (Sn), two independent inputs/outputs (nY0 and nY1) and a common input/output (nZ). All three switches share an enable input (E). A HIGH on E causes all switches into the high-impedance OFF‑state, independent of Sn. VDD and VSS are the supply voltage connections for the digital control inputs (Sn and E).

Reduced signal attenuation results in low switching losses
Reduced total harmonic distortion for high quality audio switching
Enable multiplexing of analog sensor signals - reduce number of ADC
Integrated level shifting of control signals interface to lower voltage controllers
Low ON resistance and ON resistance flatness
Low switch leakage
Wide supply voltage
Low input threshold input options