MAX703:低成本微处理器监控电路,具有备用电池控制器

电池备份电路,提供手动复位和电源失效比较器

The MAX703/MAX704 microprocessor (µP) supervisory circuits reduce the complexity and number of components required for power-supply monitoring and battery control functions in µP systems. These devices significantly improve system reliability and accuracy compared to that obtained with separate ICs or discrete components. The MAX703/MAX704 are available in 8-pin DIP and SO packages and provide four functions: An active-low reset during power-up, power-down, and brownout conditions. Battery-backup switching for CMOS RAM, CMOS µPs, or other low-power logic circuitry. A 1.25V threshold detector for power-fail warning, low-battery detection, or for monitoring a power supply other than +5V. An active-low manual reset input. The MAX703 and MAX704 differ only in their supply-voltage monitor levels. The MAX703 generates a reset when the supply drops below 4.65V, while the MAX704 generates a reset below 4.40V.

关键特性
  • Battery-Backup Power Switching
  • Precision Supply-Voltage Monitor
    • 4.65V (MAX703)
    • 4.40V (MAX704)
  • 200ms Reset Pulse Width
  • Debounced TTL/CMOS-Compatible Manual Reset Input
  • 200µA Quiescent Current
  • 50nA Quiescent Current in Battery-Backup Mode
  • Voltage Monitor for Power-Fail or Low-Battery Warning
  • 8-Pin DIP and SO Packages
  • Guaranteed RESET-bar Assertion to VCC = 1V
MAX703、MAX704:典型工作电路
MAX703、MAX704:典型工作电路
应用
  • 计算机
  • 控制器
  • 精确的µP电源监控
  • 智能仪表
数据手册DataSheet
语言下载文件备注
英文MAX703-MAX704.pdfRev 3; 05/2014
关键参数
Part NumberReset Thresh.
(V)
Reset OutICC
(µA)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
maxSee Notes
MAX7033.3 to 5.5
  • Active Low
  • Push-Pull
350
  • -55 to +125
  • -40 to +85
  • 0 to +70
  • CDIP(N)/8
  • PDIP(N)/8
  • SOIC(N)/8
$3.24 @1k
MAX704
  • 2.5 to 3.3
  • 3.3 to 5.5
  • CDIP(N)/8
  • PDIP(N)/8
  • SOIC(N)/8
$4.00 @1k
质量和环境数据
订购型号
型号状况推荐替代产品封装温度RoHS/无铅
MAX703C/D停止供货参考数据资料
MAX703CPA停止供货MAX703CPA+PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:否
MAX703CPA+生产中PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:无铅
MAX703CSA停止供货MAX703CSA+SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX703CSA+生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX703CSA+G068生产中MAX703CSA+N.SO;0°C至+70°C参考数据资料
MAX703CSA+T生产中SOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:无铅
MAX703CSA-T停止供货MAX703CSA+TSOIC(N),;8引脚;30.9mm²0°C至+70°CRoHS/无铅:否
MAX703EPA停止供货MAX703EPA+PDIP(N),;8引脚;79.7mm²-40°C至+85°CRoHS/无铅:否
MAX703EPA+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?
MAX703ESA停止供货MAX703ESA+SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX703ESA+生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX703ESA+T生产中SOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:无铅
MAX703ESA-T停止供货MAX703ESA+TSOIC(N),;8引脚;30.9mm²-40°C至+85°CRoHS/无铅:否
MAX703MJA生产中CDIP(N),;8引脚;82.6mm²-55°C至+125°CRoHS/无铅:否
MAX703-MAX704.pdf MAX704
MAX703.pdf MAX703
MAX703-MAX704.pdf MAX704