onsemi

MAX809SN120T1G

MAX809SN120T1G Description

The MAX809SN120T1G from onsemi is a precision voltage supervisor IC designed to monitor single-voltage power supplies with a fixed threshold of 1.2V. Housed in a compact SOT23-3 package, this surface-mount device ensures reliable system reset functionality with an active-low reset signal and a minimum timeout period of 140ms. It is RoHS3 compliant and adheres to REACH Unaffected standards, making it suitable for environmentally conscious designs. Although marked as obsolete, it remains a robust choice for legacy systems requiring stable voltage monitoring.

MAX809SN120T1G Features

• Fixed Threshold Voltage: Precisely monitors 1.2V supplies, eliminating the need for external components.
• Fast Reset Response: Guarantees a 140ms minimum reset timeout, ensuring quick system recovery after power fluctuations.
• Compact & Reliable: SOT23-3 package enables space-efficient PCB layouts, ideal for high-density designs.
• Low-Power Operation: Consumes minimal current, enhancing energy efficiency in battery-powered applications.
• Industrial Compliance: Meets RoHS3 and REACH standards, ensuring global regulatory compatibility.

MAX809SN120T1G Applications

• Embedded Systems: Provides reliable power-on reset (POR) for microcontrollers and FPGAs in industrial automation.
• Consumer Electronics: Ensures stable operation in portable devices like wearables and IoT sensors.
• Automotive Electronics: Monitors low-voltage rails in infotainment or telematics systems.
• Legacy Equipment: Ideal for maintaining or repairing older systems where modern alternatives are incompatible.

Conclusion of MAX809SN120T1G

The MAX809SN120T1G excels in simplicity and precision, offering a cost-effective solution for voltage supervision in space-constrained designs. Its fixed threshold, fast reset timing, and compliance with environmental standards make it a dependable choice for both legacy and niche applications. While newer alternatives exist, its performance in low-voltage monitoring ensures continued relevance in specific industrial and consumer use cases.