The DG409 is a dual 4-channel differential analog multiplexer
designed to connect one of four differential inputs to a
common dual output as determined by its 2-bit binary
address (A0, A1).
The DG409DY-E3 is a dual 4-channel differential analog multiplexer in a 16 Pin SOIC package.. It feautures a Fast Transition Time of 160 ns and a 44 V Supply Max Rating. One of its main benefits is that it has a reduced power consumption.