In the 64-VFQFN Exposed Pad package, you can find it. Easily transportable packaging in Tape & Reel (TR)-shape. The temperature should be regulated to -40°C~85°C for reliable operation. You should be able to use it as long as you use a 1.8V 2.5V 3.3VV power source. KSZ8864 numbers are members of this family.
KSZ8864RMNU-TR Features
KSZ8864RMNU-TR Applications
There are a lot of Microchip Technology KSZ8864RMNU-TR Controllers Interface ICs applications.