型号 / 厂家，封装，批号，备注，订购

54F20DM / NS,DIP,05+,原装010-66001623 订购 PDF文档

54F193DMQB / TOSHIBA,SSOP(DB)-28,05+, 订购 PDF文档

54F20DMQB / NATIONAL SEMICONDUCTOR,,,原装现货 订购 PDF文档

54F20FMQBC(54F20W) / MOT,CDIP28,04+,全新原装，深圳香港现货 订购 PDF文档

54F193LMQB / NATIONAL SEMICONDUCTOR,,,原装现货 订购 PDF文档

54F194/B EA / PHI,DIP,05+,原装现货010-66001621/3 订购 PDF文档

54f20j / ti,,dc94,全新原装，深圳/香港现货 订购 PDF文档

54F194BEA / SPHI,CDIP20,00+,全新原装，深圳香港现货 订购 PDF文档

54F194BEA59628685001EA / ,,,原装现货 订购 PDF文档

54F20M/B2AJC / Motorola,LCC20,05+,原装现货010-66001621/3 订购 PDF文档