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SN75179B: Thermal information from new and old datasheet

Satoshi
Guru 19645 points
Part Number: SN75179B

About SN75179BD (SOIC), thermal resistance is much difference from old to new revision datasheet.

・Old revision (June 1998, datasheet is attached)

SN75179B_datasheet_old.pdf

・Revision F

Please let me know why newly revision become much improved or any difference of test condition.

Best regards,

Satoshi