The MAX704CPA+ is a low cost microprocessor (μP) supervisory circuit with battery backup power switching in 8 pin DIP package. This supervisory circuit reduces the complexity and number of components required for power supply monitoring and battery control functions in μP systems. The device significantly improves system reliability and accuracy compared to that obtained with separate ICs or discrete components. The MAX704 provides active-low reset during power-up, power-down and brownout conditions. It also provides battery backup switching for CMOS RAM, CMOS μPs or other low power logic circuitry. A 1.25V threshold detector is provided for power fail warning, low battery detection or for monitoring a power supply other than +5V. The MAX704 is typically used in computers, controllers, intelligent instruments and critical μP power monitoring applications.
Supply voltage range from 0V to 5.5V
Operating temperature range from 0°C to 70°C
Power-fail comparator
Precision supply voltage monitor of 4.4V and reset pulse width of 200ms
