输出高，低电平电流
Current - Output High, Low | Noninverting Buffer / CMOS Logic Level Shifter;a single gate noninverting 3−state buffer fabricated with silicon gate CMOS technology. The output structures also provide protection when VCC =0 V. These input and output structures help prevent device destruction caused by supply voltage − input/output voltage mismatch, battery backup, hot insertion, etc。 |