In the 40-TQFN Exposed Pad package, you can find it. Easily transportable packaging in Tray-shape. The temperature should be regulated to 0°C~70°C for reliable operation. You should be able to use it as long as you use a 3.14V~3.47VV power source. ICS1894-44 numbers are members of this family.
1894K-44LF Features
1894K-44LF Applications
There are a lot of Renesas Electronics America Inc. 1894K-44LF Controllers Interface ICs applications.