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新SN74LV245APWR LP3999ITL-3.3 PI74LCX16374V R
丝印PI74LCX16827A PI74LCX16652A PI74LCX16374V PI74LCX16374A
贴插PI74LCX16374V PI74LCX16374A PI74LCX16373V PI74LCX16245V