555/556的主要电参数和外引线功能
http://www.go-gddq.com/upload/2010-02/100220080312014.gifhttp://www.go-gddq.com/upload/2010-02/100220080312015.gifhttp://www.go-gddq.com/upload/2010-02/100220080312011.gifhttp://www.go-gddq.com/upload/2010-02/100220080312016.gifhttp://www.go-gddq.com/upload/2010-02/100220080312012.gifhttp://www.go-gddq.com/upload/2010-02/100220080312013.gif
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