LT1028

Hello.

I have been using your company's LT1028MJ8 IC for 20 years now.
After 20 years of using it, I am going to replace it with a new one, but it is not available in Korea.
The one available in our country is LT1028CN8 IC, which is not compatible with the PCB I use because it has some different characteristics.
So I want to know where I can get LT1028MJ8, or do you have a replacement?