施密特電路的時序特征及門級設計
THE SEQUENTIAL CHARACTERISTIC OF SCHMITT CIRCUIT AND ITS DESIGN AT GATE LEVEL
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摘要: 該文根據施密特電路對輸入信號具有兩種檢測閾值的工作特點,提出了施密特電路與用作存貯元件的觸發(fā)器之間具有相同的時序特征。利用時序電路的設計方法,本文系統(tǒng)地研究了基于集成門電路的各種施密特電路,并發(fā)現了一些新的設計方案。PSPICE模擬證明所設計的電路具有理想的施密特電路特性。
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關鍵詞:
- 施密特電路; 時序特征; 電路設計
Abstract: Based on the working characteristic of Schmitt circuits which have two detection thresholds to input signals, this paper proposes that Schmitt circuits have the same sequen-tial characteristic as flip-flops which are used as memory units. With the design procedure of sequential circuits, varieties of Schmitt circuits based on integrated gate circuits are systemati-cally investigated, and some new designs are found. PSPICE simulations prove that the circuits designed in this paper have ideal characteristic of Schmitt circuits. -
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