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SN74HC147NCD74HC147E原装芯片
SN74HC147芯片163NDIP
接拍SN74HC147N芯片逻辑
封装SN74HC147芯片163N
解码器SN74HC147N74HC147N开关
SN74HC13BNSN74HC139NSN74HC145NSN74HC146N
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