Maxim Integrated MAX810TEUR+T Microprocessor Reset Circuit

The MAX810TEUR+T from Maxim Integrated is a highly reliable microprocessor (µP) supervisory circuit that provides a cost-effective solution for monitoring power supplies and microprocessor activity in digital systems. This precision device is designed to maintain system integrity by asserting a reset signal whenever the VCC supply voltage declines below a preset threshold, ensuring that the µP and associated circuitry reset cleanly during power-up, power-down, and brown-out conditions.

With its compact SOT-23 package, the MAX810TEUR+T is ideal for space-constrained applications, while offering a low supply current, making it suitable for battery-operated equipment. The device features an active-low RESET output, which remains asserted for a minimum timeout period of 140ms after VCC has risen above the reset threshold level. This ensures that the system has sufficient time to stabilize before the processor starts or resumes operation.

The reset threshold voltage for the MAX810TEUR+T variant is factory-set at 4.63V, tailored for systems that operate at 5V supply levels. This precise monitoring helps prevent system errors and data corruption during uncertain power conditions. Additionally, the device's built-in hysteresis further enhances noise immunity and ensures stable operation.

Key features of the MAX810TEUR+T include:

• Guaranteed Reset Valid to VCC = 1V
• Low Power Consumption: 17µA Supply Current
• 140ms Min Power-On Reset Pulse Width
• No External Components Needed
• Supply Voltage Range: 1V to 5.5V
• Immune to Short VCC Transients
• Precise 4.63V Factory-Set Reset Threshold
• Available in a Small SOT-23 Package

Engineers often choose the MAX810TEUR+T for its ease of use and the high level of protection it offers for microprocessors, microcontrollers, and other digital systems. Maxim Integrated's commitment to quality ensures that this reset circuit is a reliable component for maintaining system stability in a wide array of applications, including computers, controllers, intelligent instruments, and portable/battery-powered equipment.

Whether you are designing a new system or looking to enhance an existing one, the MAX810TEUR+T provides a simple and effective solution for safeguarding your digital systems against power supply uncertainties.