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HD74LS221RPEL中文资料
HD74LS221RPEL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.
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
RENESAS/瑞萨 |
21+ |
SOP5.2 |
2000 |
||||
RENESAS(瑞萨)/IDT |
2021+ |
SOP-20_208mil |
499 |
||||
RENESAS/瑞萨 |
24+ |
SOP5.2 |
9600 |
原装现货,优势供应,支持实单! |
|||
HIT |
24+ |
DIP |
191 |
||||
CPClare |
23+ |
SOP-8P |
6500 |
全新原装假一赔十 |
|||
HIT |
88+ |
DIP |
273 |
原装正品 |
|||
HD |
23+ |
DIP-14 |
50000 |
全新原装正品现货,支持订货 |
|||
HIT |
25+ |
QFP |
3200 |
全新原装、诚信经营、公司现货销售 |
|||
HD |
DIP-14 |
22 |
一级代理,专注军工、汽车、医疗、工业、新能源、电力 |
||||
HIT |
23+ |
DIP |
62638 |
##公司主营品牌长期供应100%原装现货可含税提供技术 |
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Datasheet数据表PDF页码索引
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Renesas Technology Corp 瑞萨科技有限公司
瑞萨科技公司(Renesas Technology Corp.)是一家全球领先的半导体解决方案供应商,总部位于日本东京。公司成立于2002年,由原日立半导体和三菱电机半导体合并而成,专注于提供高性能和高效能的微控制器、模拟和混合信号IC、功率半导体以及系统集成解决方案,广泛应用于汽车、工业控制、信息通信、消费电子等多个领域。瑞萨科技的产品组合涵盖微控制器(MCUs)、模拟和混合信号IC、功率半导体以及汽车解决方案等。公司在汽车电子领域具有强大的技术实力,提供车载MCU、传感器和网络解决方案,支持智能汽车的发展。瑞萨在全球设有多个研发中心和分支机构,产品及解决方案销售至欧美、亚洲等地区,致力于为