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.
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.