Product Overview: MAX793TESE+T from Maxim Integrated

The MAX793TESE+T is a highly reliable, precision microprocessor (μP) supervisory circuit designed by Maxim Integrated to monitor power supplies in digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems with a single 3.3V power supply rail.

This supervisory circuit ensures that the μP and its peripherals are reset properly during power-up, power-down, and brown-out conditions. The reset output remains asserted for a minimum of 140ms after VCC has risen above the reset threshold level. This guarantees that the system microprocessor starts up in a known state every time.

The MAX793TESE+T features a watchdog timer that safeguards against system failure due to software lockup. This timer can be disabled if not used, providing design flexibility. Additionally, the device includes a debounced manual reset input that allows for a very low VCC detection feature, making it an ideal choice for portable and battery-operated applications.

This device is available in a 16-pin narrow SO package and is specified over the extended industrial temperature range of -40°C to +85°C. The MAX793TESE+T is ideal for use in computers, controllers, intelligent instruments, critical μP and μC power monitoring, and portable/battery-powered equipment.

Key features of the MAX793TESE+T include:

• Precision monitoring of 3.3V power-supply voltages
• Fully integrated power-on reset circuit
• 140ms min power-on reset pulse width
• Watchdog timer with 1.6s timeout (min)
• Debounced manual reset input
• Low VCC detection and reset assertion down to 1V
• Low cost and high reliability with no external components required

Overall, the MAX793TESE+T from Maxim Integrated is a versatile and dependable solution for power supply monitoring, ensuring that digital systems operate with increased stability and reliability.