the cd4097 is a dual 8-channel multiplexer having three binary control inputs a0, a1, a2 and an inhibit input (e). the inputs permit selection of one of eight pairs of switches. withe high all switches are in the high-impedance off-state, independent of a0 to a2.
the analog inputs/outputs (ny0 to ny7 and nz) can swing between vdd as a positive limit and vss as a negative limit. vdd to vss may not exceed 15v.