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在脉冲数字电路传递过程中,要有较好的上升沿和下降沿。而某些情况下,输入信号往往是正弦波或非短形波,这样就需要将上述波形转换成矩形波,然后再和系统中的数字电路相连。另外,在自动控制技术中常常需要对某一预定电压幅度的鉴别。这种具有波形的转换和鉴别作用的电路都可以通过施密特触发器来完成。由于TTL施密特触发器的电源电压范围较窄、输入阻抗低以及不均衡的输出特性,在接口的相容上
In the pulse digital circuit transfer process, there should be better rising and falling edges. In some cases, the input signal is often sine wave or non-short wave, so you need to convert the waveform into a rectangular wave, and then connected to the digital circuit in the system. In addition, automatic control technology often need to identify a predetermined voltage amplitude. This waveform conversion and identification of the circuit can be done by Schmitt trigger. Because TTL Schmitt trigger supply voltage range is narrow, low input impedance and unbalanced output characteristics, the compatibility of the interface