Please refer to the datasheets for 14 pins functions. Despite this switch's dual supply capability, its voltage should not exceed 18V. For dual power supplies, a voltage of at least 10V should be attached.
SJM184BXA Features
SJM184BXA Applications
There are a lot of Vishay Siliconix SJM184BXA Analog Switches & Multiplexers ICs applications.