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SN74LVT244BPWR SN74LVT244BPW SN74LVT244BPWT TSSOP20 LX244B
SN74LVT244BPWR SN74LVT244BPWT LX244B 进口芯片可拍
SN74LVT244BPWR SN74LVT244BPWT LX244B 进口芯片直拍
SN74LVT244BPWR SN74LVT244BPWT LX244B 进口芯片价优