DS1815-20+T&R

Supervisors Overview

The DS1815-20+T&R is a supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated, designed for monitoring single-channel power supply voltages. It operates within a threshold voltage range of 2.55V with a ±20% tolerance and supports a maximum supply voltage of 5.5V. The device features a manual reset capability and includes an integrated watchdog timer. It provides active low push-pull output signals and ensures a reset delay time of at least 100ms. The component functions reliably across a wide industrial temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Integrates a watchdog timer for system fault detection
• Provides manual reset functionality for controlled recovery
• Features active low push-pull output configuration

Supervisors Applications

• Single-channel power supply supervision in embedded systems
• Microprocessor reset circuitry requiring watchdog protection
• Industrial control units operating in extreme temperatures

Supervisors Procurement Notes

Verify the specific package type and lead time requirements before ordering, as availability may be restricted. Confirm that the 2.55V threshold aligns precisely with the target supply rail. Ensure the active low output logic matches the receiving microcontroller or FPGA input specifications. Check for any RoHS compliance documentation if required by the manufacturing facility.

Supervisors Selection Notes

Select this component when a simple, cost-effective solution for voltage monitoring and watchdog timing is needed. It is suitable for applications requiring a fixed threshold without programmable adjustment. Consider the TO-92-3 through-hole package if board space allows and surface mount options are not mandatory. Verify that the 100ms minimum reset delay meets the system startup timing constraints.

Supervisors Part Context

This part belongs to the EconoReset series from Maxim Integrated, focusing on basic power management functions. It complements more complex supervisory ICs by offering essential reset and watchdog features in a compact form factor. The series is known for providing reliable voltage monitoring solutions for standard digital logic families.

Supervisors Replacement Considerations

DS1815R-20+T&R is a verified substitute part number within the same product family.