理学 计算机硬件电路 释 fanout-of-4 inverter delay; FO4 inverter delay 四扇出反向器延迟 互补金属氧化物半导体（CMOS）数字电路的一种工艺无关的延迟度量单位，相当于一个最小尺寸的反相器驱动四个相同尺寸反相器时的延迟。针对某种具体的制造工艺，FO4约等于特征尺寸乘以0.36ns/μm。
计算机硬件 计算机集成电路 释文 fan-out of four, FO4 四扇出反向器延迟
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