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TCA9548A-Q1: Temperature of device can stand

Part Number: TCA9548A-Q1
Other Parts Discussed in Thread: TCA9548A

Hi team,

     I find that there is update that  TCA9548A-Q1 added grade 1 to the automotive feature, and deleted Temperature grade 3: -40°C to +85°C, Ta. The grade 1 could stand with -40-125s℃,but our device 's max junction temperature is still 90℃ written in datasheet. The real temperature is almost 105℃ in customer design. 

    So here are the questions:

    1. why device max junction temperature is 90℃(recommended 85℃) with the AEC-Q100 grade 1;

    2. do we have roadmap on I2C switch which can stand with -40-125℃ ? In ti.com, there is only one I2C switch device which can reach AEC-Q100.

YOURS

NAN