Other Parts Discussed in Thread: LM74700-Q1
Hello TI expert,
Here are some questions about Device temperature grade 1 in datasheet of LM74500-Q1/LM74700-Q1.
Background: The maximum ambient temperature of LM74500-Q1/LM74700-Q1 is 125℃ in our application, we can see that there is the description in page 1 of datasheet:
Device temperature grade 1:
–40°C to +125°C ambient operating
So we think it is OK in our appliction since it is a device temperature grade 1 and the maximum junction temperature is 150℃ .
But we also see the parameters condition: TJ = –40°C to +125°C in the chapter "6.5 Electrical Characteristics", we feel confused if we can use it.
Questions:
1) Does it mean that the parameters are guaranteed only in the condition of the maximum junction temperature is 125℃?
2) Can the parameters be guaranteed if we use it when the ambient temperature is 125℃?
3) If the anwser of item 2) is No, what's the deviation if we still use it when the ambient temperature is 125℃?
Thanks in advance.