To find out what the 16 pins do, please refer to the datasheets. There is no problem with using dual supply voltage, but it should not exceed 18V. When using dual power supplies, you should attach at least 10V.
SJM184BEA01 Features
SJM184BEA01 Applications
There are a lot of Vishay Siliconix SJM184BEA01 Analog Switches & Multiplexers ICs applications.
Digital Cross-Connects
CSU
Existing multiplexer applications (both fault-protected and nonfault-protected)