ADM709LANZ

Supervisors Overview

The ADM709LANZ is a power supply monitor integrated circuit manufactured by Analog Devices Inc. It generates a system reset signal during power-up, power-down, and brownout conditions to ensure microprocessor stability. The device features a low quiescent current of 35 mA and provides a minimum power-on reset pulse duration of 140 ms after the supply voltage rises above the threshold. It operates with VCC as low as 1 V and supports three specific supply-voltage threshold levels suitable for +5 V, +3.3 V, and +3 V monitoring applications. The component is available in 8-pin DIP and SOIC packages.

Supervisors Feature Summary

• Generates system reset signals during power-up, power-down, and brownout events
• Maintains operational functionality with supply voltages as low as 1 V
• Provides precision monitoring for standard +5 V, +3.3 V, and +3 V supply rails

Supervisors Applications

• Microprocessor systems requiring critical power supervision
• Computers and controllers needing reliable reset generation
• Automotive systems utilizing critical microprocessor power monitoring

Supervisors Procurement Notes

Verify the exact suffix designation against official Analog Devices documentation, as legacy part numbers may have evolved. Confirm package availability and RoHS compliance status directly with authorized distributors or the manufacturer. Check for end-of-life notices or obsolescence alerts prior to procurement planning. Ensure the selected variant matches the required voltage threshold specification for the target application.

Supervisors Selection Notes

Select this component when precise monitoring of +5 V, +3.3 V, or +3 V rails is required for microprocessor reset generation. Consider the 140 ms minimum reset pulse duration to ensure adequate stabilization time for the target logic family. Evaluate the 35 mA quiescent current against system power budget constraints. Verify that the 8-pin DIP or SOIC package format fits the intended PCB layout and assembly process requirements.

Supervisors Part Context

The ADM709 series serves as a dedicated power-supply monitor designed to replace older Maxim Integrated MAX709 components. It functions as a supervisory circuit ensuring system integrity by holding the microprocessor in reset until stable operating conditions are achieved. This family addresses critical power monitoring needs in industrial and automotive environments where voltage fluctuations must be strictly managed.

Supervisors Replacement Considerations

Public confirmed substitute part numbers include MAX709MCSA+ and MAX709LCSA+. Verify pin compatibility and threshold voltage alignment before substitution.