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TRS3221: About part number

Part Number: TRS3221

Hello,

Please tell me the difference between TRS3221CPWR and TRS3221IPWR.

"6.3 Recommended Operating Conditions" has the following description.
Ta: Operating free-air temperature was as follows.

TRS 3221 C 0 to 70 ° C
TRS 3221 I - 40 to 85 ° C

On the other hand, in "PACKAGING INFORMATION"
Op Temp (° C), both model numbers are the same.
TRS 3221 CPWR - 40 to 85 ° C
TRS 3221 IPWR - 40 to 85 ° C

Thank you.