LTC1726ES8-5#PBF

Supervisors Overview

The LTC1726ES8-5#PBF is a triple supply monitor and microprocessor supervisory circuit manufactured by Analog Devices Inc. It features three independent voltage monitoring inputs with fixed thresholds of 3.3 V, 5 V, and an adjustable threshold. The device provides an active low, open-drain reset output with an adjustable reset delay time to ensure system stability during power transitions. It integrates a watchdog timer for fault detection and operates within a supply voltage range up to 7 V. The component functions reliably across an industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Triple input voltage monitoring with two fixed thresholds and one adjustable threshold
• Adjustable reset delay time to manage power-up sequencing requirements
• Integrated watchdog timer for detecting processor malfunctions
• Active low open-drain reset output compatible with various logic families

Supervisors Applications

• Systems requiring supervision of multiple distinct power rails
• Microprocessor and microcontroller reset generation circuits
• Industrial control systems needing watchdog functionality
• Embedded systems with strict power-up timing constraints

Supervisors Procurement Notes

Verify the specific suffix ES8-5#PBF against official Analog Devices documentation to confirm pinout and threshold specifications. Confirm RoHS compliance status through current datasheets. Check for end-of-life notifications or discontinuation notices prior to procurement planning. Ensure compatibility with existing PCB footprints and thermal management requirements.

Supervisors Selection Notes

Select this component when a single IC must monitor three separate voltage lines simultaneously. The fixed 3.3 V and 5 V thresholds simplify design for standard logic supplies. Choose the adjustable channel for non-standard voltages. Verify that the open-drain output interface matches the target microprocessor reset input requirements. Consider the adjustable delay feature if precise power-on sequencing is necessary.

Supervisors Part Context

This part belongs to the LTC1726 series of supervisory circuits designed for complex multi-voltage environments. It consolidates monitoring and reset generation into a compact SOIC-8 package. The series supports various threshold combinations to accommodate different system architectures without requiring external resistor networks for fixed rails.

Supervisors Replacement Considerations

Consult Analog Devices application notes for direct pin-compatible alternatives within the same family. Verify electrical parameter equivalence for threshold accuracy and operating current before substitution.