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MAX6342, MAX6343, MAX6344, MAX6345
6引脚、微处理器复位电路,带有电源失效比较器


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概述
完整的数据资料 (PDF, 556kB)
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The MAX6342-MAX6345 family of microprocessor (µP) supervisory circuits monitors power supplies in digital systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components.

The MAX6342-MAX6345 provide factory-trimmed VCC reset threshold voltages from 2.33V to 4.63V and operate with supply voltages between +1V and +5.5V. A +1.25V threshold detector allows for a power-fail warning, for low-battery detection, or for monitoring another power supply. The MAX6342 contains an active-low MR input and an active-low push-pull reset. The MAX6343 and MAX6344 are identical to the MAX6342 except they provide an active-low, open-drain reset and an active-high, push-pull reset, respectively. The MAX6345 provides a second reset output in place of the active-low MR input to give it an active-high push-pull reset and an active-low push-pull reset.

All of the devices are packaged in a miniature 6-pin SOT23.

关键特性   应用/使用
  • Small 6-Pin SOT23 Package
  • Precision Factory-Set VCC Reset Thresholds Between 2.33V and 4.63V
  • Guaranteed Active-Low RESET Valid to VCC = +1V
  • 100ms min Reset Pulse Width
  • Debounced CMOS-Compatible Manual-Reset Input
  • Voltage Monitor for Power-Fail or Low-Battery Warning

 
  • 嵌入式控制系统
  • 多电压系统
  • 网络设备
  • 便携式电池供电设备
  • 便携式计算机
  • 电信设备

    Key Specifications:   Supervisors (1 Monitored Voltage)
    Part Number Reset Threshold Range (V) Active-Low Reset Output Active-High Reset Output Min. Reset Timeout Range Watchdog Feature Supervisor Features Reset Thresh. Acc. (% @+25°C) Max. ICC (µA) Price**
    MAX6342  1.2 to 1.8
    1.8 to 2.5
    2.5 to 3.3
    3.3 to 5.5
    Push-Pull  -  85ms to 300ms No Watchdog Adjustable Reset Input
    Manual Reset
    Power Fail Comparator
    1.5 40 $1.23 @ 1k
    MAX6343  Open Drain  -  $1.23 @ 1k
    MAX6344   -  Push-Pull $1.23 @ 1k
    MAX6345  Push-Pull Push-Pull $1.23 @ 1k
    See All Supervisors (1 Monitored Voltage) (270)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    图表
    MAX6342、MAX6343、MAX6344、MAX6345:典型工作电路
    典型工作电路

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    参考文献: 19-1568; Rev. 2; 2006-06-07
    本页最后一次更新: 2007-08-23


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