Looking at SN74AC241DW, there is only a theta_ja listed and an operating temp -40 to 85C. Is there a recommended max operating junction temperature and/or a corresponding theta_jc for this part?
Thanks,
Lauren
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Looking at SN74AC241DW, there is only a theta_ja listed and an operating temp -40 to 85C. Is there a recommended max operating junction temperature and/or a corresponding theta_jc for this part?
Thanks,
Lauren
Hi Lauren,
The max operating junction temperature is 150C -- see [FAQ] What is the maximum junction temperature (TJMAX) for a device?
We have a much more accurate mathematical model for thermals now than when this part was originally developed (you may notice that all parts in a package used to have the same R_theta_ja). These are the updated numbers for this device:
Result- Theta JA-High K (standard datasheet value) |
81.4 |
46.8 |
|
49.3 |
|
20.0 |
|
48.8 |