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新SN74LS640J BAS21Q-7-F SN74LS465N SN74LS420N R
SN74LS640J SNJ54LS640J 54LS640 74LS640.进口双列直插脚DIP陶瓷
贴插MC74LS374J SN74LS640N ICM7224IPL M48Z18B-10 B
卖P4010P TE28F640J3C-120 LOH43MN821K03L SN74LS193N原装
CD4093BF3A SN54HC245J SN54LS640J SN74LS374N原装