The MAX6809REUR+T is a compact, highly reliable microprocessor (µP) supervisory circuit designed and manufactured by Maxim Integrated. This device is engineered to monitor power supplies in digital systems and provide a warning when power falls below a designated threshold, ensuring the proper function and protection of the µP and associated circuitry.

Featuring a low supply current of only 1.5µA, the MAX6809 is an ideal choice for power-sensitive applications. The device operates over a wide voltage range, from 1.2V to 5.5V, making it versatile for various systems. Its precision factory-set reset thresholds cater to the specific needs of different applications and are available in a multitude of standard voltages.

One of the key features of the MAX6809REUR+T is its ability to assert a reset signal whenever the V_CC supply voltage declines below the preset threshold. The reset output remains asserted for a minimum of 140ms after V_CC rises above the reset threshold, providing ample time for the system to stabilize. This reset timeout ensures that the µP and other critical components have reset adequately before resuming operation.

This device is available in a small, 3-pin SOT23 package, making it suitable for space-constrained applications. The MAX6809REUR+T is also characterized for operation over the extended industrial temperature range of -40°C to +85°C, ensuring reliable performance in harsh environments.

Maxim Integrated's commitment to high-quality and reliability is reflected in the MAX6809REUR+T, making it a popular choice for designers who require a robust reset circuit to enhance system reliability. Common applications include portable/battery-powered equipment, computers, controllers, intelligent instruments, and critical µP and µC power monitoring.

Key Features:

• Low Power Consumption: 1.5µA Supply Current
• Wide Operating Voltage Range: 1.2V to 5.5V
• Precision Factory-Set Reset Thresholds
• Minimum 140ms Reset Timeout Period
• Small 3-Pin SOT23 Packaging
• Operating Temperature Range: -40°C to +85°C