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

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.

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
MAX814、MAX815、MAX816:典型应用电路
MAX814、MAX815、MAX816:典型应用电路
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
数据手册DataSheet
语言下载文件备注
英文MAX814-MAX816.pdfRev 1; 09/2006
关键参数
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee 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(N)/8
  • SOIC(N)/8
$5.45 @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(N)/8
  • SOIC(N)/8
$6.37 @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(N)/8
  • SOIC(N)/8
$5.82 @1k
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX814KCPA停止供货MAX814KCPA+PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:否
MAX814KCPA+生产中PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:无铅
MAX814KCSA停止供货MAX814KCSA+SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX814KCSA+生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX814KCSA+T生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX814KCSA-T停止供货MAX814KCSA+TN.SO;8引脚0°C至+70°C参考数据资料
MAX814KEPA停止供货MAX814KEPA+PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:否
MAX814KEPA+生产中PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:无铅
MAX814KESA停止供货MAX814KESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX814KESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX814KESA+T生产中N.SO;8引脚-40°C至+85°C参考数据资料
MAX814KESA-T停止供货MAX814KESA+TN.SO;8引脚-40°C至+85°C参考数据资料
MAX814LCPA停止供货MAX814LCPA+PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:否
MAX814LCPA+生产中PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:无铅
MAX814LCSA停止供货MAX814LCSA+SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX814LCSA+生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX814LCSA+T生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX814LCSA-T停止供货MAX814LCSA+TSOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX814LEPA停止供货MAX814LEPA+PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:否
MAX814LEPA+生产中PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:无铅
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX814LESA停止供货MAX814LESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX814LESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX814LESA+T生产中N.SO;8引脚-40°C至+85°C参考数据资料
MAX814LESA-T停止供货MAX814LESA+TSOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX814NCPA停止供货MAX814NCPA+PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:否
MAX814NCPA+生产中PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:无铅
MAX814NCSA停止供货MAX814NCSA+SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX814NCSA+生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX814NCSA+T生产中N.SO;8引脚0°C至+70°C参考数据资料
MAX814NCSA-T停止供货N.SO;8引脚0°C至+70°C参考数据资料
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX814NEPA生产中PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:否
MAX814NEPA+生产中PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:无铅
MAX814NESA停止供货MAX814NESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX814NESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX814NESA+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX814NESA-T停止供货MAX814NESA+TN.SO;8引脚-40°C至+85°C参考数据资料
MAX814TCPA停止供货MAX814TCPA+PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:否
MAX814TCPA+生产中PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:无铅
MAX814TCSA停止供货MAX814TCSA+SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX814TCSA+生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
型号状况推荐替代产品封装:类型 引脚 占位面积封装图 编码/变更 *温度RoHS/无铅?
MAX814TCSA+T生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX814TCSA-T停止供货MAX814TCSA+TN.SO;8引脚0°C至+70°C参考数据资料
MAX814TEPA停止供货MAX814TEPA+PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:否
MAX814TEPA+生产中PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:无铅
MAX814TESA停止供货MAX814TESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX814TESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX814TESA+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX814TESA-T停止供货MAX814TESA+TSOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX814-MAX816.pdf MAX816
MAX814-MAX816.pdf MAX814