20-TSSOP (0.173, 4.40mm Width) contains it. With its Tube-shaped packaging, it's easy to carry. Temperature regulation to -40°C~85°C ensures reliable operation. Using a 2.3V~3.6VV power source should be fine. There is currently a 100μA supply available.
PCA9665PW,112 Features
PCA9665PW,112 Applications
There are a lot of Rochester Electronics, LLC PCA9665PW,112 Controllers Interface ICs applications.