The electrical component comes in 8-SOIC (0.154, 3.90mm Width) packaging, which makes it convenient to ship overseas. The advanced packaging method Tape & Reel (TR) provides high reliability. In Surface Mount, you'll find this switch device. 1:1 is the number of circuits in the multiplexer and demultiplexer. Around -40°C~85°C TA is the extended operating temperature. On the other hand, analog switches can be constructed using SPST - NC switching circuits. It consists of 1 circuits. If you are looking for variants of the digital switch, trying search with ISL84517.
ISL84517IB-T Features
Switch Circuit: SPST - NC
ISL84517IB-T Applications
There are a lot of Renesas Electronics America Inc. ISL84517IB-T Analog Switches & Multiplexers ICs applications.