I see that the operating temperature of the AD5553 is -40 to 85C. Is that air temperature around a mounted device on a standard board or is that case temperature?
Would you have any other specifications that you would need to take note of? Could you share what is your target application? Knowing these, we can pick DACs that will better suit the application that you have. I have made a list of DACs below that can operate up to 125C and has 14 or 16 bit resolution. Please take a look for your reference.
Let me know if you have any further questions.