贴片CD74LS574ACDC2509BPWCDC2510PWR¥2.80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CD74LS574A,CDC2509BPW,CDC2510PWR,CDC328ADBRTLC59211INCD74AC541ECD74AC574ESN74LS540N¥50去看看品设旗舰店发布了TLC59211IN CD74AC541E CD74AC574E SN74LS540N CD74HC533E