15年前出现的555型模拟时基电路延用至今,除了速率和功耗作了适当的改正外其它基本没有变化,但是新近出现了一种线器件却打破了这种状况,新型的555时基电路用硅栅CMOS制造,发生的方波频率高达5MHZ,其速率相当于双极型的十倍,其它类型CMOS的两倍,它能按需要提供一定范围的延时或脉冲,而且均可在单稳态或稳态下工作,5V时 The Model 555 analog time base circuit that emerged 15 years ago has so far been largely unchanged except for the appropriate correction of the rate and power consumption, but a recent appearance of a wireline device has broken the condition. The new 555 The base circuit is fabricated in silicon gate CMOS with a square wave frequency of up to 5 MHz, a rate equivalent to ten times the bipolar and twice the size of other CMOS types, providing a range of delays or pulses as needed Working in monostable or steady state, 5V