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54LS195 SN54LS195AJ SN54LS195J 进口16插脚CDIP陶封 74LS195
全新SN54LS196J SN54LS195J SN54LS194J SN54LS193W SN54LS193J
SN54LS175J SN54LS193J SN54LS195AJ SN54LS20J
全新SN54LS240J-B SN54LS195AJB SN54LS163AJ& SN54HCT4066J
全新原装SN54LS195AJ SN54LS196FK SN54LS196J SN54LS196W集成芯
贴片直插SNJ54HC195J SNC54LS378J SN8P2708AXG SNC54LS221J 5