DS1815-20

Supervisors Overview

The DS1815-20 is a fixed-threshold power supply supervisor manufactured by Analog Devices Inc./Maxim Integrated. It provides a reset signal for single-channel applications with a threshold voltage of 2.55V and a push-pull/totem pole output configuration. The device ensures system reliability by generating a low-active reset pulse upon power-up or when the supply voltage drops below the specified threshold. It operates within a temperature range of -40°C to +85°C and supports a minimum reset timeout of 100ms.

Supervisors Feature Summary

• Generates a reset signal when supply voltage falls below the fixed 2.55V threshold
• Features a push-pull output stage for direct logic interface
• Provides a guaranteed minimum reset timeout duration of 100ms

Supervisors Applications

• Microprocessor system supervision
• Battery-powered equipment monitoring
• Portable instrumentation power management

Supervisors Procurement Notes

Verify component authenticity through authorized distributors due to discontinuation status. Confirm package type matches design requirements, as variants exist in TO-92-3 and SOT-23-3 formats. Check RoHS compliance documentation for specific manufacturing lots. Ensure thermal handling meets operational limits during installation.

Supervisors Selection Notes

Select this component for applications requiring a fixed 2.55V supervision threshold. Verify that the push-pull output capability aligns with downstream logic levels. Consider the physical package constraints if space is limited, noting available through-hole and surface-mount options.

Supervisors Part Context

This part belongs to the EconoReset family of supervisory circuits designed for cost-sensitive applications. It simplifies power management by integrating threshold detection and timing functions into a compact form factor, reducing external component count compared to discrete solutions.

Supervisors Replacement Considerations

DS1815R-20/T&R; serves as a surface-mount alternative within the same functional family.