MAX709MEPA+

Supervisors Overview

The MAX709MEPA+ is a power-supply monitor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range up to 5.5 V and features a fixed threshold voltage of 4.4 V with an accuracy of 2.5%. The device provides an active-low, push-pull reset output with a typical reset delay time of 280 ms. It consumes a maximum operating supply current of 65 uA and supports a power dissipation of 727 mW. The component is designed for through-hole installation in an 8-PDIP package and functions reliably across an extended temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Provides automatic system reset upon detection of undervoltage conditions relative to the fixed threshold.
• Generates a reset signal following power-up to ensure proper microprocessor initialization.
• Includes power-fail detection capability to monitor supply integrity during operation.

Supervisors Applications

• Monitoring 5V power supplies in microprocessor-based digital systems
• Ensuring reliable startup sequences in embedded controller applications
• Providing supervision for battery-powered devices requiring stable voltage thresholds

Supervisors Procurement Notes

Verify component authenticity through authorized distribution channels due to limited availability status. Confirm RoHS compliance documentation matches specific manufacturing lot requirements. Check datasheet revisions for any pinout or electrical characteristic updates prior to final design integration. Ensure thermal management strategies align with the specified power dissipation limits under worst-case operating conditions.

Supervisors Selection Notes

Select this component when a fixed 4.4V threshold is required for 5V system monitoring without manual reset inputs. Consider the 280ms reset delay for timing-sensitive logic interfaces. Evaluate the 65uA quiescent current against low-power design constraints. The through-hole PDIP-8 package suits prototyping or high-reliability mechanical mounting needs compared to surface-mount alternatives.

Supervisors Part Context

This part belongs to the MAX709M series of simple reset/voltage supervisor circuits. It complements other Maxim Integrated supervisory components like the MAX708 and MAX701, offering a specialized 4.4V threshold option distinct from the 3.08V variants found in similar packages. The series focuses on cost-effective, single-channel power monitoring solutions for standard logic families.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official cross-reference guides for potential functional equivalents such as the ADM709 series, verifying threshold voltages and package compatibility before substitution.