The Data and Clock lines are both open collector. 数据和时钟线都是集电极开路(OC)的。
In TTL NAND circuit, a phase inverter with its output circuit changed to an open collector. 在TTL与非门电路中,输出级改用集电极开路(OC)的一种反相器。
On the Pull-up Resistor of TTL Open - Collector Gates TTL集成电路OC门的上拉电阻的研究
Sometimes when Suze is not at home, I open my wardrobe and just stare at all my pairs of shoes, like some mad collector. 有时候,家里没有其他人时,我会把衣橱门打开,自已欣赏放着衣橱里的我的那些宝贝鞋子,像是个着了迷的收藏家。