型号 / 厂家，封装，批号，备注，订购

SN74LS251NSR / TI,SOP,08/09+,010-66001623/66001621 订购 PDF文档

SN74LS251P / MIT,,08/09+,特价 订购 PDF文档

SN74LS253 / NS,,08/09+,全新原装深圳库存 订购 PDF文档

SN74LS253D / TEXAS INSTRUMENTS,,08/09+,全新原装深圳库存 订购 PDF文档

SN74LS253DE4 / Texas Instruments,Datasheet,06/07+,DUAL 4-LINE TO 1-LIN 订购 PDF文档

SN74LS253DR / TI,,08/09+,特价 订购 PDF文档

SN74LS253J / ,,08/09+,现货特价 订购 PDF文档

SN74LS253N (PB FREE) / TI,16PIN,08/09+,原装库存 订购 PDF文档

SN74LS253N(PBFREE) / TI,16PIN,08/09+,全新原装 订购 PDF文档

SN74LS253NE4 / Texas Instruments,Datasheet,06/07+,DUAL 4-LINE TO 1-LIN 订购 PDF文档