全新HD74LS257FPEL HD74LS253FPLE HD74LS251FPEL HD74LS248FPEL

贴插HD74LS273RPEL-HD74LS74AFPEL-HD74LS257FPEL-B

贴插BF422/BF423-74LS257BDR2-MAX208CWG-T-74LS257FPEL-N

贴片直插HD74LS175RPEL，HD74LS257FPEL，HD74LS74AFPTL

貼片直插74LS374RPEL 74LS257FPEL 74LCX573WMX 74LS164RPEL 6

貼片直插74LV139APWR 74LS374RPEL 74LS139RPEL 74LS257FPEL 6

HD74LS257FPEL- 品佳芯城国际代理全线售出原装IC库存，拍前请先

全新原装正品品质保证

全新74LS257ASCX 74LS247FPEL 74LS245RPEL 74LS245FPEL 74LS245D

全新74LS259BNSR 74LS257FPEL 74LS257BNTI 74LS257BNSR 74LS257B