丝印MM74HCT244WMXSOP7.2-MM74HCT240WMXSOP7.2

丝印mma0102-501%VG03BL4 MM74HCT574WMXSOP7.2

丝印MM74HCT138MXSOP3.9 MM74HC688WMXSOP7.2 MM74HC4066MXSOP3.9