Maxim Integrated's MAX806TESA+T Microprocessor Supervisory Circuit

The MAX806TESA+T from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit designed to monitor power supplies and microprocessor activity in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used with +5V-powered circuits. This supervisory circuit ensures that your microprocessor will start-up in the same condition every time the power is applied.

Featuring a precision voltage monitor, the MAX806TESA+T keeps a close eye on the system's power supply. It holds the microprocessor in a reset state during power-up, power-down, and brownout conditions. The reset output remains operational with VCC as low as 1V, and the device's reset threshold voltage is factory-trimmed to a high precision of ±1.5%, ensuring reliable operation.

This supervisory circuit also includes a watchdog timer that can be set by an external capacitor, which provides a versatile timing range to suit various system requirements. The watchdog timer keeps the microprocessor running smoothly by resetting it if it fails to strobe within a preset timeout period.

With its small 8-pin SO package, the MAX806TESA+T is an ideal choice for space-constrained applications. It operates over a wide temperature range of -40°C to +85°C, making it suitable for use in a variety of environments, from industrial to commercial applications. Furthermore, the device's low power consumption enhances battery life for portable applications.

Key features of the MAX806TESA+T include:

• Reset threshold suitable for +5V-powered circuits
• ±1.5% reset threshold accuracy over temperature
• 200ms min power-on reset pulse width
• Watchdog timer with 1.6s timeout (min)
• Manual reset capability
• Low supply current of 23µA
• Operational down to 1V VCC

For applications requiring reliable system monitoring and a robust power-on reset functionality, Maxim Integrated's MAX806TESA+T provides an efficient and cost-effective solution. Its precision and features make it a go-to component for designers looking to enhance system stability and performance.