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±1%精度、低功耗、+3V与+5V微处理器监控电路

1%精度的微处理器监控IC

产品详情

主要特征

应用/用途

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 1
Reset Out Active Low
Push-Pull
tRESET (min) 85ms to 300ms
Watchdog Feature Input (WDI)
Input/Output (WDI/WDO)
Watchdog Timeout 1s to 2s
Supervisor Features Adjustable Reset Input
Manual Reset
Power Fail Comparator/Low Battery Detect
ICC (µA) (max) 75
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
6.82
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简化框图

技术文档

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参量

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 2.5 to 3.3
3.3 to 5.5
Reset Thresh. Accur. (%) (@ +25°C) 1
Reset Out Active Low
Push-Pull
tRESET (min) 85ms to 300ms
Watchdog Feature Input (WDI)
Input/Output (WDI/WDO)
Watchdog Timeout 1s to 2s
Supervisor Features Adjustable Reset Input
Manual Reset
Power Fail Comparator/Low Battery Detect
ICC (µA) (max) 75
Package/Pins PDIP/8
SOIC (N)/8
Budgetary
Price (See Notes)
6.82

主要特征

  • ±1% Worst-Case Reset Threshold Accuracy
  • 4.8V, 4.7V, 4.55V, 3.03V, or Adjustable Reset Thresholds
  • ±1% Low-Line Threshold Accuracy (MAX814) 60mV Above Reset Threshold
  • 200ms Reset Time Delay
  • Active-Low RESET Output
  • Active-High RESET Output (MAX814/MAX816)
  • 75µA Max Supply Current
  • Guaranteed active-low RESET Valid to VCC = 1V
  • Manual Reset Input
  • ±2% Power-Fail Comparator
  • Independent Watchdog with 1.56sec Timeout (MAX815)
  • Power-Supply Glitch Immunity
  • 8-Pin SO and DIP Packages

应用/用途

  • 控制器
  • 精确的µP监控
  • 智能仪表
  • 医疗装置
  • 便携式电池供电设备
  • 机顶盒

描述

The MAX814/MAX815/MAX816 are high-accuracy microprocessor (µP) supervisory circuits that provide power-on reset, watchdog, and power-fail functions. They eliminate manual trimming and improve reliability in critical applications needing high-accuracy reset thresholds. The active-low RESET output is guaranteed to be in the correct state for VCC down to 1V. The reset comparator is designed to ignore fast transients on VCC. Reset thresholds are available for operation with a variety of 3V and 5V supply voltages.

A 75µA maximum supply current makes the MAX814/MAX815/MAX816 ideal for use in portable equipment. All three devices are available in 8-pin DIP and SO packages. See the Selector Table below for a review of features.

简化框图

MAX814、MAX815、MAX816:典型应用电路 MAX814、MAX815、MAX816:典型应用电路 Zoom icon

技术文档

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心