Maxim Integrated MAX6326XR25-T Voltage Supervisor

The MAX6326XR25-T is a microprocessor (µP) supervisory circuit designed by Maxim Integrated to monitor power supplies in µP and digital systems. It provides excellent circuit reliability and low cost by eliminating external components and adjustments when used in systems that require voltage monitoring. This precision voltage supervisor is tailored specifically to maintain system integrity through monitoring the power supply voltage levels and ensuring they remain within operational thresholds.

One of the key features of the MAX6326XR25-T is its factory-set reset threshold voltage, which for this particular model is set at 2.5V. This makes it suitable for monitoring 2.5V power supplies. The device holds a µP in reset until the system's power supply has stabilized after power-up. It also monitors the power supply voltage and keeps the µP in reset if the supply voltage drops below the preset threshold, ensuring a proper restart and preventing system errors due to insufficient power.

The MAX6326XR25-T comes in a compact, 3-pin SC70 package, making it ideal for space-constrained applications. It has a low supply current of only 1.2µA, which is beneficial for portable and battery-operated equipment. The device operates over a wide temperature range of -40°C to +125°C, ensuring reliable performance in diverse operating environments.

Additional features include a 140ms min power-on reset delay, which provides a sufficient delay to ensure the system's power supply is stable before allowing the µP to start operating. The device also includes a debounced manual reset input, which allows for a manual reset of the µP, providing an extra layer of control and security.

Designed for use in computers, controllers, intelligent instruments, critical µP power monitoring, and portable/battery-powered equipment, the MAX6326XR25-T is a versatile and reliable solution for systems that cannot tolerate even a momentary loss of power. Its robust feature set and compact form factor make it an excellent choice for designers looking to enhance system reliability without incurring significant space or power penalties.