MAX6348UR40

Overview

The MAX6348UR40 is a supervisory circuit from the MAX6348 series, designed for ultra-low-power applications. It features an open-drain or open-collector active low output and monitors a single input voltage. The device operates within a supply voltage range up to 5.5 V and includes a reset delay time of 280 ms. It has a typical operating supply current of 500 nA and detects overvoltage thresholds such as 3.451 V. The component functions reliably across a temperature range of -40°C to +85°C and is housed in a compact SOT-23-3 package.

Feature Summary

• Ultra-low-power consumption suitable for battery-operated systems
• Active low open-drain or open-collector output configuration
• Compact surface-mount packaging for space-constrained designs

Applications

• Portable electronic devices requiring power monitoring
• Embedded systems needing voltage supervision
• Battery-powered equipment with low quiescent current requirements

Procurement Notes

Verify the specific suffix (+T) indicates tape-and-reel packaging if required by assembly processes. Confirm the obsolete status with the manufacturer or authorized distributors before finalizing procurement plans. Ensure compatibility with existing PCB footprints for SOT-23-3 packages during replacement sourcing.

Selection Notes

Select this component when low standby current is critical for system efficiency. The fixed threshold voltage requires matching the monitored rail level precisely. Consider the absence of manual reset and watchdog timer features when designing fault recovery logic. Verify that the open-drain output interface aligns with the downstream logic levels.

Part Context

This part belongs to the MAX6348 family of simple reset circuits. It serves as a basic voltage supervisor without complex timing or enable features. The series focuses on minimizing power usage while providing reliable reset signals for microcontrollers and memory devices in portable electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.