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MSP430 Ta vs TJ temperature

Other Parts Discussed in Thread: MSP430F5253

Hi,

I'm looking a MSP430F5253 datasheet.
http://www.ti.com/lit/ds/symlink/msp430f5253.pdf

On page 41, the follwings is described as TA and TJ
・TA Operating free-air temperature : -40~85℃
・TJ Operating junction temperature : -40~85℃

I wonder why TA and TJ is the same temperature. I think the maximam temperature of TJ is usually higher than TA. (TJ = xx +TA. so TJ max  > TA max).
Is this correct?

Best Regards,
Taka

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