位置:HD74LS221 > HD74LS221详情

HD74LS221中文资料

厂家型号

HD74LS221

文件大小

104.9Kbytes

页面数量

9

功能描述

Dual Monostable Multivibrators

I.C.

数据手册

下载地址一下载地址二到原厂下载

生产厂商

RENESAS

HD74LS221数据手册规格书PDF详情

This multivibrator features a negative-transition-triggered input and a positive-transition-triggered input either of which can be used as an inhibit input. Pulse triggering occurs at a particular voltage level and is not directly related to the transition time of the input pulse. 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 of typically 1.2 V. A high immunity to VCC noise of typically 1.5 V is also provided by internal latching circuitry. Once fired, the outputs are independent of further transitions of the A and B inputs and are a function of the timing components, or the output pulses can be terminated by the overriding clear. Input pulses may be of any duration relative to the output pulse. Output rise and fall times are TTL compatible and independent of pulse length.

Typical triggering and clearing sequence are illustrated as a part of the switching characteristics waveforms. Pulse width stability is achieved through internal compensation and is virtually independent of VCC and temperature.

HD74LS221产品属性

  • 类型

    描述

  • 型号

    HD74LS221

  • 制造商

    Panasonic Industrial Company

  • 功能描述

    I.C.

更新时间:2025-10-7 16:01:00
供应商 型号 品牌 批号 封装 库存 备注 价格
RENESAS
2014+
300
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23+
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2019
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23+
DIP16
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RENESAS
23+
DIP16
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20+
DIP16
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24+
DIP16
5000
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24+
DIP16
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25+
DIP16
8800
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