UPD74HC4040CUPD74HC4040GUPD74HC4050CUPD74HC4051C¥5.20去看看元器件之家发布了正品UPD74HC4051C UPD74HC4050C UPD74HC4040G UPD74HC4040CUPD正品HC74¥5.30去看看元器件之家发布了正品UPD74HC4051G-E2/JM UPD74HC245GSSOP5.2 UPD74HC00G-T1SOP14