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SN74HC273: 273 mark meaning of every word

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Prodigy 10 points
Part Number: SN74HC273

deal sir:    SN74HC273 ,mark  , top , fistr line  38CHE9KG4  seconde line: HC273 . bottom first line  M43,seconde line  A2C.   I want to know all meaning wih everv word , please help me, thank you . 

你好！ 

SN74HC273的丝印，顶部第一行 38CHE9KG4  第二行 HC273 . 反面第一行 M43,第二行是  A2C. 我想知道每个字符的含义，谢谢！.

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    TI__Guru**** 185470 points

    您好，

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