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Maxim产品 - MAX708R介绍

MAX708R - 监视+3V电压、低成本、微处理器监控电路

MAX708R是Maxim美信半导体公司的一款监控电路、电压监测、排序产品，MAX708R是监视+3V电压、低成本、微处理器监控电路，本站介绍了MAX708R的封装应用图解、特点和优点、功能等，并给出了与MAX708R相关的Maxim元器件型号供参考。

MAX708R - 监视+3V电压、低成本、微处理器监控电路 - 监控电路、电压监测、排序 - Maxim美信半导体高性能芯片品质 - 美信半导体

产品概述

The MAX706P/R/S/T, MAX706AP/AR/AS/AT, and MAX708R/S/T microprocessor (µP) supervisory circuits reduce the complexity and number of components required to monitor +3V power-supply levels in +3V to +5V µP systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components.

The MAX706P/R/S/T and MAX706AP/AR/AS/AT supervisory circuits provide the following four functions:

    1) A reset output during power-up, power-down, and brownout conditions.
    2) An independent watchdog output that goes low if the watchdog input has not been toggled within 1.6s.
    3) A 1.25V threshold detector for power-fail warning, low-battery detection, or for monitoring a power supply other than the main supply.
    4) An active-low, manual-reset input.
The only difference between the MAX706R/AR, MAX706S/AS, and MAX706T/AT is the reset-threshold voltage levels, which are 2.63V, 2.93V, and 3.08V, respectively. All have active-low reset output signals. The MAX706P/AP are identical to the MAX706R/AR, except the reset output signal is active-high. The watchdog timer function for the MAX706AP/AR/AS/AT disables when the WDI input is left open or connected to a high-impedance state of a low-leakage tri-state output.

The MAX708R/S/T provide the same functions as the MAX706R/S/T and MAX706AR/AS/AT except they do not have a watchdog timer. Instead, they provide both active-low RESET and RESET outputs. As with the MAX706, devices with R, S, and T suffixes have reset thresholds of 2.63V, 2.93V, and 3.08V, respectively.

These devices are available in 8-pin SO, DIP, and µMAX® packages and are fully specified over the operating temperature range.

关键特性
  • 以下关键特性由Maxim美信半导体提供：
  • µMAX Package, Small 8-Pin SO
  • Precision Supply-Voltage Monitors
  • 2.63V (MAX706P/R, MAX706AP/AR, and MAX708R)
  • 2.93V (MAX706S, MAX706AS, and MAX708S)
  • 3.08V (MAX706T, MAX706AT, and MAX708T)
  • 200ms Reset Time Delay
  • Debounced TTL/CMOS-Compatible Manual Reset Input
  • 100µA Quiescent Current
  • WDI Disable Feature (MAX706AP/AR/AS/AT)
  • Watchdog Timer: 1.6s Timeout
  • Reset Output Signal:
  • Active-High Only (MAX706P, MAX706AP)
  • Active-Low Only (MAX706R/S/T, MAX706AR/AS/AT)
  • Active-High and Active-Low (MAX708R/S/T)
  • Voltage Monitor for Power-Fail or Low-Battery Warning
  • 8-Pin Surface-Mount Package
  • Guaranteed active-low RESET Assertion to VCC = 1V
    • 热门应用
  • 电池供电设备
  • 计算机
  • 控制器
  • 精确的µP电源监控
  • 智能仪表
  • 便携式仪表
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