http://html.alldatasheet.jp/html-pdf/399447/NXP/74HC157/114/2/74HC157.html
ʂ̃TCgɃWv悤ƂĂ܂BXΏL̃NNbNĂ
UPLIFTōLȂő̌܂傤IKȉ{Ct܂I