It is a part of the 24-SOIC (0.295, 7.50mm Width) package. This packaging has a Tube-shape, making it convenient to carry around. A reliable operation requires a temperature that is regulated to -40°C~85°C. It should work as long as you use a 4.4V~5.25VV power source. This number is part of the AT43301 family. 24mA supplies are available at the moment.
AT43301-SU Features
AT43301-SU Applications
There are a lot of Microchip Technology AT43301-SU Controllers Interface ICs applications.