贴片直插HD74AC157FPTR，HD74HC238FPEL，HD74LVC04TELL

全新HD74HC238FPTR HD74HC238FPEL HD74HC237FPEL HD74HC221FPEL

新HD74HC238FPTR 100B2R0CW500X NMC27C64Q-250 R

贴插LTV-817S-TA/C-HD74HC238FPEL-HD74LS393FPTR-B