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关于SN74LVT16245BDGG的表面印字问题



请问SN74LVT16245BDGG表面印字第一行是批次追踪码(Lot Trace Code)吗? 有一批SN74LVT16245BDGG芯片印字第一行为“38AOQ4K   G4”请问代表什么意思?能否解释一下批次追踪码每一位的具体含义?谢谢。