贴片直插MM74HC195J MM74HC191J MM74HC147N MM74HC181N 4

贴插MM74HC163/MM74HC191/MM74HC27N/MM74HC242/MM74HC162/4

贴片直插MM74HC191N MM74HC190N MM74HC181J MM74HC190J 4

MM74HC191N PDIP-16 计数器/分频器 全新原装