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主要特征
应用/用途
Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) | 1.2 to 1.8 1.8 to 2.5 2.5 to 3.3 3.3 to 5.5 |
Reset Thresh. Accur. (%) (@ +25°C) | 2.5 |
Reset Out | Active High Active Low Push-Pull |
tRESET (min) | 85ms to 300ms |
Watchdog Feature | No Watchdog |
Supervisor Features | Manual Reset |
ICC (µA) (max) | 12 |
Package/Pins | SOT23/5 |
Budgetary Price (See Notes) | 1.73 |
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简化框图
Technical Docs
数据资料 | 低电压、SOT23封装、微处理器监控电路,带有手动复位及看门狗定时器 | Oct 07, 2019 |
支持和培训
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参量
Parametric specs for Supervisors (1 Monitored Voltage)
Reset Thresh. (V) | 1.2 to 1.8 1.8 to 2.5 2.5 to 3.3 3.3 to 5.5 |
Reset Thresh. Accur. (%) (@ +25°C) | 2.5 |
Reset Out | Active High Active Low Push-Pull |
tRESET (min) | 85ms to 300ms |
Watchdog Feature | No Watchdog |
Supervisor Features | Manual Reset |
ICC (µA) (max) | 12 |
Package/Pins | SOT23/5 |
Budgetary Price (See Notes) | 1.73 |
主要特征
- Monitors +1.8V, +2.5V, +3.0V, +3.3V, +5.0V Supplies
- 140ms (min) Reset Timeout Delay
- 1.6s Watchdog Timeout Period (MAX6821/MAX6822/MAX6823/MAX6824)
- Manual Reset Input (MAX6821/MAX6822/MAX6823/MAX6825)
- Three Reset Output Options
- Push-Pull Active-Low RESET
- Push-Pull RESET
- Open-Drain Active-Low RESET
- Guaranteed Reset Valid to VCC = +1.0V
- Immune to Short Negative VCC Transients
- No External Components
- Small 5-Pin SOT23 Packages
应用/用途
- 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
- 机顶盒
描述
The MAX6821—MAX6825 are low-voltage microprocessor (µP) supervisory circuits that combine voltage monitoring, watchdog timer, and manual reset input functions in a 5-pin SOT23 package. Microprocessor supervisory circuits significantly improve system reliability and accuracy compared to separate ICs or discrete components. These devices assert a reset signal whenever the monitored voltage drops below its preset threshold, keeping it asserted for a minimum timeout period after VCC rises above the threshold. In addition, a watchdog timer monitors against code execution errors. A debounced manual reset is also available. The MAX6821—MAX6825 monitor voltages from +1.8V to +5.0V. These outputs are guaranteed to be in the correct state for VCC down to +1.0V.
Nine preprogrammed reset threshold voltages are available (see the Threshold Suffix Guide). The MAX6821, MAX6822, and MAX6823 all have a manual reset input and a watchdog timer. The MAX6821 has push-pull RESET, the MAX6822 has open-drain active-low RESET, and the MAX6823 has push-pull active-low RESET. The MAX6824 has a watchdog timer and both push-pull active-low RESET and push-pull RESET. The MAX6825 has a manual reset input and both push-pull active-low RESET and push-pull RESET. The Selector Guide explains the functions offered in this series of parts.
Nine preprogrammed reset threshold voltages are available (see the Threshold Suffix Guide). The MAX6821, MAX6822, and MAX6823 all have a manual reset input and a watchdog timer. The MAX6821 has push-pull RESET, the MAX6822 has open-drain active-low RESET, and the MAX6823 has push-pull active-low RESET. The MAX6824 has a watchdog timer and both push-pull active-low RESET and push-pull RESET. The MAX6825 has a manual reset input and both push-pull active-low RESET and push-pull RESET. The Selector Guide explains the functions offered in this series of parts.
Technical Docs
数据资料 | 低电压、SOT23封装、微处理器监控电路,带有手动复位及看门狗定时器 | Oct 07, 2019 |
支持和培训
采样:
选择上方“样片”按钮将重定向至第三方ADI样片网站。登录后,所选部件将转移到您在此网站上的购物车。如果您之前从未使用过此网站,请创建一个新帐户。有关此样片网站的任何问题,请联系SampleSupport@analog.com。