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DIP封装SN74LS191ND集成电路
MC1488PMC1489PPC74HC191P
贴片直插74LS191PC 74LS193DC 74LS194AN 74LS244BC
貼插74LS374SJ,74LS373NA,74LS191NS,74LS253DR,74LS533PC,6
MC1488P MC1489P PC74HC191P SN74LS125AN HD74HC191P 适用卡邻赞