MAX704CSA+

The MAX704CSA+ is a low cost microprocessor (μP) supervisory circuit with battery backup power switching in 8 pin NSOIC 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
• Active-low, push-pull reset output
• Debounced TTL/CMOS compatible manual reset input
• Quiescent current of 200μA
• Quiescent current of 50nA in battery backup mode
• Reset (complementary) assertion to VCC = 1V

Notas

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party