MAX6702, MAX6702A:低电压、SOT23封装、微处理器监控电路,带有电源失效检测输入/输出、手动复位及看门狗定时器

The MAX6701—MAX6708 microprocessor (µP) supervisory circuits reduce the complexity and components required to monitor power-supply functions in µP systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components. The MAX6701—MAX6708 family provides four functions: a reset output during power-up, power-down, and brownout conditions; an independent watchdog output that goes low if the watchdog input has not been toggled within 1.6s; a 0.62V threshold detector for power-fail warning; and an active-low manual reset input. The MAX6701—MAX6708 family offers several pinout options to accommodate a variety of multivoltage microprocessor supervision applications. The MAX6701(A)/MAX6702(A)/MAX6703(A) monitor three supply voltages (one fixed threshold and two adjustable) to drive a single reset output and include a manual reset input and a watchdog timer with an independent output. The MAX6704 monitors a single-supply voltage to drive complementary reset outputs and includes an independent adjustable power-fail-in/power-fail-out comparator, a manual reset input, and a reset-based watchdog timer. The MAX6705(A)/MAX6706(A)/MAX6707(A) monitor a single-supply voltage to drive a single reset output and include an independent adjustable power-fail-in/power-fail-out comparator, a manual reset input, and a watchdog timer with an independent output. The MAX6708 is the same as the MAX6704 but without the watchdog timer function. See the Detailed Description for differences between non-A and A versions.

关键特性
  • Small 8-Pin SOT23 Package
  • Precision Monitoring of +5.0V, +3.3V, +3.0V, +2.5V Supply Voltages
  • 140ms Reset Timeout Delay
  • Power-Fail Input with Independent Output; Monitor Inputs Down to 0.62V (MAX6704—MAX6708)
  • Dual Adjustable Reset Input for Triple-Voltage Monitoring (MAX6701(A)/MAX6702(A)/MAX6703(A))
  • 1.6s Watchdog Timeout Period (MAX6701(A)—MAX6707(A))
  • Independent Watchdog Output (MAX6701(A)/MAX6702(A)/MAX6703(A)/MAX6705(A)/MAX6706(A)/MAX6707(A))
  • Manual Reset Input
  • Four Reset Output Stage Options
  • Guaranteed Reset Valid to VCC = 1V
  • Immune to Short Falling VCC Transients
  • Low Cost, Few External Components
MAX6701、MAX6701A、MAX6702、MAX6702A、MAX6703、MAX6703A:引脚配置
MAX6701、MAX6701A、MAX6702、MAX6702A、MAX6703、MAX6703A:引脚配置
应用
  • 计算机
  • 控制器
  • 精确的µP电源监控
  • 智能仪表
  • 网络
  • 电信
  • 白色家电
数据手册DataSheet
语言下载文件备注
英文MAX6701-MAX6708.pdfRev 4; 08/2014
关键参数
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesICC
(µA)
Package/PinsBudgetary
Price
minmaxSee Notes
MAX6704
  • 0 to 1.2
  • 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
85ms to 300msInput (WDI)1s to 2s
  • Adjustable Reset Input
  • Manual Reset
  • Power Fail Comparator/Low Battery Detect
25SOT/8$2.44 @1k
MAX6705
  • Active Low
  • Push-Pull
  • Input (WDI)
  • Input/Output (WDI/WDO)
1s to 2sSOT/8$1.48 @1k
MAX6706
  • Active High
  • Push-Pull
  • Input (WDI)
  • Input/Output (WDI/WDO)
1s to 2sSOT/8$1.48 @1k
MAX6707
  • Active Low
  • Open Drain
  • Input (WDI)
  • Input/Output (WDI/WDO)
1s to 2sSOT/8$1.48 @1k
MAX6708
  • Active High
  • Active Low
  • Push-Pull
No Watchdog-SOT/8$1.48 @1k

Part NumberInterfaceReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesICC
(µA)
Package/PinsBudgetary
Price
minmaxSee Notes
MAX6701
  • Factory Fixed
  • R/C Adjustable
  • 0 to 1.2
  • 1.2 to 1.8
  • 1.8 to 2.5
  • 2.5 to 3.3
  • 3.3 to 5.5
  • Active Low
  • Push-Pull
85ms to 300ms
  • Input (WDI)
  • Input/Output (WDI/WDO)
1s to 2s
  • Adjustable Reset Input
  • Manual Reset
25SOT/8$1.48 @1k
MAX6702
  • Active High
  • Push-Pull
SOT/8$2.55 @1k
MAX6703
  • Active Low
  • Open Drain
SOT/8$1.58 @1k
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订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX6702ALKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702ALKA-T停止供货MAX6702ALKA+TSOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702AMKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702AMKA-T停止供货SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702ARKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702ARKA-T停止供货MAX6702ARKA+TSOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702ASKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702ASKA-T停止供货SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702ATKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702ATKA-T停止供货SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
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?
MAX6702AYKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702AYKA-T停止供货SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702AZKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702AZKA-T停止供货MAX6702AZKA+TSOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702LKA+生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702LKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702LKA-T停止供货MAX6702LKA+TSOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702MKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702MKA-T停止供货MAX6702MKA+TSOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702RKA+T生产中SOT,;8引脚;9mm²-40°C至+125°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?
MAX6702RKA-T停止供货SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702SKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702SKA-T停止供货SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702TKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702TKA-T停止供货SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702YKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702YKA-T停止供货SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6702ZKA+T生产中SOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:无铅
MAX6702ZKA-T停止供货MAX6702ZKA+TSOT,;8引脚;9mm²-40°C至+125°CRoHS/无铅:否
MAX6701-MAX6708.pdf MAX6703
MAX6701-MAX6708.pdf MAX6707A