TI’s SN74LS221 is a Dual monostable multivibrators with Schmitt-trigger inputs. Find parameters, ordering and quality information.

TI 的 SN74LS221 是一款 具有施密特触发输入的双路单稳多频振荡器。 查找参数、订购和质量信息.

Schmitt-trigger input circuitry (TTL hysteresis) for B input allows jitter-free triggering from inputs with transition at rates as slow as 1 V/s, providing the circuit with excellent noise immunity, typically of 1.2 V. A high immunity to VCC noise, typically of 1.5 V, also is provided by internal latching circuitry.

2017年7月3日 · 双单稳态触发器（有施密特触发器） 5422 1/7422 1 54LS211/74LS221 简要说明 逻辑符号： 22 1 为具有两个施密特触发器输入的单稳态触发器，共有 54 （74 ）22 1 和 54 （74 ）LS221 两种线路结构形式，其主要电 特性的典型值如下： 型号 输出脉冲范围 PD 5422 1/7422 1 …

74ls221具有两个施密特触发器输入的单稳态触发器，由于正触发输入端（B）采用了施密特触发器，因此有较高的抗扰度，典型值为1.2V。 又由于内部有锁存电路，故对电源Vcc也有较高的抗扰度，典型值为1.5V。

The DM74LS221 is a dual monostable multivibrator with Schmitt-trigger input. Each device has three inputs permitting the choice of either leading-edge or trailing-edge triggering.

Schmitt-trigger input circuitry (TTL hysteresis) for B input allows jitter-free triggering from inputs with transition rates as slow as 1 V/s, providing the circuit with excellent noise immunity, typically of 1.2 V. A high immunity to V CC noise, typically of …

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Pin (A) is an active-LOW trigger transition input and pin (B) is an active-HIGH transition Schmitt-trigger input that allows jitter free triggering for inputs with transition rates as slow as 1 volt/second. This provides the input with excellent noise immunity.

部件名: 74LS221. 下载. 文件大小: 120Kbytes. 页: 8 Pages. 功能描述: LOW POWER SCHOTTKY. 制造商: ON Semiconductor.