贴片直插HD74LS14FPTR，TC74HCT138AP，TC74HC374AFW，4

议价质HD74LS126AP HD74HC174P 74HC374AP HD74LS374P1

贴片直插HD74LS138P，HD74LS253P，HD74LS374P，HD74LS74AP

议价原原74F374PC HD74LS139P HD74HCT244P TC74HC273AP

议价原MC74F32N CD74AC245E HD74LS374AP SN74BCT244N