MAX4747 data sheet 里的一段话,不是特别明白;其实归根到底还是对rail to rail 理解不深,高手解释一下。
The MAX4747–MAX4750 are TTL compatible when powered from a single +3V supply. When powered from other supply voltages, the logic inputs should be driven rail-to-rail. For example, with a +11V supply, IN_ should
be driven low to 0V and high to 11V. With a +3.3V supply, IN_ should be driven low to 0V and high to 3.3V. Driving IN_ rail-to-rail minimizes power consumption. |