CD74HCT40103MCD74ACT253MSN74LS221DTS5V330D￥30去看看品设旗舰店发布了MC3487D SN74LS221D CD74HCT40103M TS5V330D CD74ACT253MPCM2704DBRSN74LS221N74VHC153MX107￥2.50去看看芯片二极管三极管电容电阻集成电路发布了SN74LS221N PCM2704DBR BA16B-107G PCM2704DBR 74VHC153MX 9贴片质量保证SN74LS221DRDM74LS221M￥0.60去看看阳乐嘉电子发布了进口逻辑IC DM74LS221M SN74LS221DR 贴片SOP-16 质量保证CD74HC4049MTCD74HCT109MSN74LS221DRCD74HC4049M￥20去看看品设旗舰店发布了CD74HCT109M SN74LS221DR TSM102ID CD74HC4049M CD74HC4049MT贴片SN74LS183NSN74LS221MSN74LS244N￥2.20去看看芯片二极管三极管电容电阻集成电路发布了贴片直插SN74LS183N，SN74LS221M，SN74LS244N，SN74LS244H，4贴片SN74LS240NSN74LS221DSN74LS169N￥2.50去看看芯片二极管三极管电容电阻集成电路发布了贴片直插SN74LS240N，SN74LS221D，SN74LS169N，SN74LS175M，4
