MAX814

±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


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说明

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.
MAX814、MAX815、MAX816:典型应用电路 MAX814、MAX815、MAX816:典型应用电路 放大+

关键特性

  • ±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

  • 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

请查看具体的参数规格 Supervisors (1 Monitored Voltage) (250)


Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
(min)(@ +25°C)(max)(See Notes)
MAX814 
2.5 to 3.3
3.3 to 5.5
Active High
Active Low
Push-Pull
85ms to 300msNo Watchdog-
Adjustable Reset Input
Manual Reset
Power Fail Comparator/Low Battery Detect
175
PDIP/8
SOIC (N)/8
$5.72 @1k
MAX815 
2.5 to 3.3
3.3 to 5.5
Active Low
Push-Pull
Input (WDI)
Input/Output (WDI/WDO)
1s to 2s
PDIP/8
SOIC (N)/8
$6.82 @1k
MAX816 
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active High
Active Low
Push-Pull
No Watchdog-
PDIP/8
SOIC (N)/8
$6.11 @1k

Pricing Notes:
价格仅供参考,用于同类产品的比较。所提供报价为美元,需要依汇率折合成人民币。该价格将因当地关税、税率和汇率而异。有关特定订购量和指定版本的报价和供货问题,请参考:价格与供货网站或与指定代理商联系。
申请可靠性报告: MAX814 
型号   生产流程   工艺   样本量   不合格   FIT @ 25°C   FIT @ 55°C   Material Composition  

备注: 通过技术手段对故障率进行汇总,并映射到相关的材料部件号。 故障率与被测件的数量密切相关。

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