MAX6315US31D3-G125

Supervisors Overview

The MAX6315US31D3-G125 is a microprocessor supervisory circuit manufactured by Analog Devices Inc. under the Maxim Integrated brand. It monitors a single power supply input with a fixed threshold voltage of 3.08 V and an overvoltage threshold of 3.14 V. The device features an active-low, open-drain reset output and supports manual reset functionality. It operates within a supply voltage range up to 5.5 V, consuming only 5 uA of operating current. The reset delay time is specified at 200 ms, with an accuracy of 1.8%. The component is housed in a surface-mount SOT-143-4 package and is rated for operation across an extended temperature range from -40°C to +125°C.

Supervisors Feature Summary

• Provides reliable system reset when monitored supply voltage drops below or exceeds preset thresholds
• Features low-power consumption suitable for battery-operated applications
• Includes debounced manual reset input for user-initiated system restarts
• Offers open-drain output compatible with various logic families

Supervisors Applications

• Microprocessor (µP) and digital system power supply monitoring
• Battery-powered equipment requiring low standby current
• Portable electronic devices needing extended temperature operation
• Industrial control systems requiring high reliability reset circuits

Supervisors Procurement Notes

Verify the exact suffix 'G125' against official Analog Devices documentation to confirm pinout, thermal characteristics, and compliance status. Ensure the sourcing channel provides valid traceability for this specific marking code. Cross-reference the datasheet revision to confirm the 3.08 V threshold and 200 ms delay parameters match your design requirements before finalizing procurement orders.

Supervisors Selection Notes

Select this component when a fixed 3.08 V threshold is required for single-supply monitoring. Consider the open-drain output if level shifting or wired-OR configurations are needed. The wide temperature range makes it suitable for harsh environments. Compare against the MAX6314 series if bidirectional reset compatibility with specific microcontrollers like the 68HC11 is necessary instead of standard open-drain operation.

Supervisors Part Context

This part belongs to the MAX6315 series of ultra-low-power µP reset circuits. It is designed to replace discrete resistor-capacitor networks, simplifying board layout and improving reliability. The series offers various fixed threshold voltages to accommodate different standard supply rails. The SOT-143-4 package allows for compact surface-mount integration in space-constrained designs.

Supervisors Replacement Considerations

Direct substitutes include other MAX6315 variants with different threshold voltages (e.g., MAX6315USxxD3+T). For functional equivalence with different thresholds, verify the new threshold matches the system's minimum operating voltage. Ensure the replacement maintains the same SOT-143-4 footprint and electrical characteristics such as reset delay and quiescent current.