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5引脚微处理器监控电路,带有看门狗定时器及手动复位

业内首款SOT复位IC,带有看门狗和手动复位功能

产品详情

主要特征

应用/用途

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Reset Out Active Low
Push-Pull
tRESET (min) 85ms to 300ms
Watchdog Feature Input (WDI)
Watchdog Timeout 1s to 2s
Supervisor Features Manual Reset
ICC (µA) (max) 24
Package/Pins SC70/5
SOT23/5
Budgetary
Price (See Notes)
2.21
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参量

Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) 1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Reset Out Active Low
Push-Pull
tRESET (min) 85ms to 300ms
Watchdog Feature Input (WDI)
Watchdog Timeout 1s to 2s
Supervisor Features Manual Reset
ICC (µA) (max) 24
Package/Pins SC70/5
SOT23/5
Budgetary
Price (See Notes)
2.21

主要特征

  • Precision Monitoring of +2.5V, +3V, +3.3V, and +5V Power Supplies
  • Operating Current:
    • 6µA (MAX823L/M) (SC70)
    • 2µA (MAX825T/S/R/Z/Y) (SC70)
  • Fully Specified Over Temperature
  • 140ms min Power-On Reset
  • Guaranteed active-low RESET Valid to VCC = 1V
  • Power-Supply Transient Immunity
  • Watchdog Timer with 1.6s Timeout (MAX823/MAX824)
  • Manual Reset Input (MAX823/MAX825)
  • No External Components

应用/用途

  • 汽车电子
  • 计算机与控制器
  • 精确的µP监控
  • 嵌入式控制器
  • 智能仪表
  • 便携式电池供电设备

描述

The MAX823/MAX824/MAX825 microprocessor (µP) supervisory circuits combine reset output, watchdog, and manual reset input functions in 5-pin SOT23 and SC70 packages. They significantly improve system reliability and accuracy compared to separate ICs or discrete components. The MAX823/MAX824/MAX825 are specifically designed to ignore fast transients on VCC.

Seven preprogrammed reset threshold voltages are available (see Reset Threshold Table in the full data sheet). All three devices have an active-low reset output, which is guaranteed to be in the correct state for VCC down to 1V. The MAX823 also offers a watchdog input and manual reset input. The MAX824 offers a watchdog input and a complementary active-high reset. The MAX825 offers a manual reset input and a complementary active-high reset. The Selector Guide explains the functions offered in this series of parts.

简化框图

MAX823、MAX823L、MAX823M、MAX823R、MAX823S、MAX823T、MAX823Y、MAX823Z、MAX824、MAX824L、MAX824M、MAX824R、MAX824S、MAX824T、MAX824Y、MAX824Z、MAX825、MAX825L、MAX825M、MAX825R、MAX825S、MAX825T、MAX825Y、MAX825Z:典型工作电路 MAX823、MAX823L、MAX823M、MAX823R、MAX823S、MAX823T、MAX823Y、MAX823Z、MAX824、MAX824L、MAX824M、MAX824R、MAX824S、MAX824T、MAX824Y、MAX824Z、MAX825、MAX825L、MAX825M、MAX825R、MAX825S、MAX825T、MAX825Y、MAX825Z:典型工作电路 Zoom icon

技术文档

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