nd gates 十三输入与非门74hc137 3-to-8 decoders w/latches 3-8线译码器74hc138 3-8 line decoder 3线至8线译码器74hc139 2-4 line decoder 2线至4线译码器74hc14 triggered hex inverter 六触发反向器74hc147 10-4 line priority encoder 10-4编码器74hc148 8-3 line priority encoder 8-3编码器74hc149 8-8 line priority encoder 8-8编码器74hc151 8-channel digital mux 8通道多路器74hc153 dual 4-input mux 双四输入多路器74hc154 4-16 line decoder 4线至16线译码器74hc155 2-4 line decoder 2线至4线译码器74hc157 quad 2-input mux 四个双端多路器74hc161 binary counter 二进制计数器7
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