This high-reliability packaging method uses advanced packaging methods Strip. The datasheets for the 9 pins explain the functions. It is generally not recommended to supply a voltage higher than 5.5V to the switch device in normal circumstances. There should be 1.8V voltage fed to the electrical part below 1.8V. A SPST analog IC is integrated into the board.
MAX4722EBL+ Features
MAX4722EBL+ Applications
There are a lot of Maxim Integrated MAX4722EBL+ Analog Switches & Multiplexers ICs applications.