The HEF4952B is a small signal switch providing a dual 5-channel analog multiplexer/demultiplexer with common select logic. Each multiplexer has four independent inputs/outputs (pins nY0 to nY3) and a common input/output (pin nZ). Via one channel, channel nY2 and nY3 can be connected to VSS. VSS and VDD are the supply voltage pins for the digital control inputs (pins A0 to A2).