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PCM1704U



你们好,我要采购PCM1704U ,但此型号已于去年3月停止生产了,我只能从其它地方进行采购,但又不知道如何来鉴别真假?是否可以提供一些帮助

另外从芯片表面的印字上是否能判断其生产批次号呢?具体印字代表什么?也请帮忙提供技术支持,谢谢了!非常紧急