MAX7705:微处理器电源监测器与复位

电源监控与复位电路

In applications with microprocessors (µPs) that have a RESET input, the MAX7705 is functionally and socket compatible with the TL7705, but requires no external components. It provides power-supply glitch immunity and a guaranteed power-up reset delay, while typically consuming 1/27th the power from a +5V supply. The MAX7705 monitors the power supply in µP and digital systems. The RESET output is valid for VCC down to 1V. The device offers excellent circuit reliability and low cost by eliminating external components and adjustments. A system reset is provided during power-up, power-down, and brownout conditions. When VCC is below the reset threshold, RESET is low and holds the µP in reset. RESET will go high 280ms after VCC rises above the reset threshold. The MAX7705 is available in 8-pin DIP and SO packages.

关键特性
  • No External Components
  • Low Cost
  • Precise Reset Threshold
  • 280ms Power-On Reset Delay
  • 8-Pin DIP and SO Packages
MAX7705:典型工作电路
MAX7705:典型工作电路
应用
  • 元件数最少的低成本处理器系统
数据手册DataSheet
语言下载文件备注
英文MAX7705.pdfRev 0; 06/1993
关键参数
Part NumberReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureICC
(µA)
Package/PinsBudgetary
Price
minmaxSee Notes
MAX77053.3 to 5.5
  • Active Low
  • Push-Pull
85ms to 300msNo Watchdog150PDIP(N)/8$1.65 @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
MAX7705CPA停止供货MAX7705CPA+PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:否
MAX7705CPA+生产中PDIP(N),;8引脚;79.7mm²0°C至+70°CRoHS/无铅:无铅
MAX7705CWA停止供货W.SO;0°C至+70°C参考数据资料
MAX7705EPA停止供货MAX7705EPA+PDIP;参考数据资料
MAX7705EPA+生产中PDIP;-40°C至+85°C参考数据资料
MAX7705EWA停止供货W.SO;-40°C至+85°C参考数据资料
MAX7705.pdf MAX7705
MAX7705.pdf MAX7705