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MAX704：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 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

关键参数

质量和环境数据

• MAX704.pdf

订购型号