CD4067B CMOS analog multiplexers/ demultiplexers are digitally controlled analog switches having low ON Impedance, low OFF leakage current, and internal address decoding. In addition, the ON resistance is relatively constant over the full input-signal range. The CD4067BMS is a 16 channel multiplexer with four binary control inputs, A, B, C, D and an inhibit input, arranged so that any combination of the inputs selects one switch.