DS1233MS-3+TR

Supervisors Overview

The DS1233MS-3+TR is a voltage supervisory circuit from the Maxim Integrated EconoReset family, designed for monitoring single power supply rails. It operates within a supply voltage range of 1.2 V to 5.5 V and features a threshold voltage of 3.0 V. The device provides an active low, open-drain output with a reset delay time of 500 ms. It includes power-fail detection capabilities but lacks a manual reset input, watchdog timer, or battery backup switch. The component is housed in an SOIC-8 surface-mount package and supports operation across a temperature range of -40°C to +85°C.

Supervisors Feature Summary

• Provides continuous supervision of a single voltage rail with dedicated power-fail detection logic
• Features an active low open-drain output suitable for interfacing with various digital logic families
• Includes a fixed reset delay timer to ensure stable power-up sequencing before asserting the reset signal

Supervisors Applications

• Microprocessor and microcontroller system power monitoring
• Embedded controller board voltage supervision
• Industrial control unit power integrity verification

Supervisors Procurement Notes

Verify the specific suffix TR indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status as datasheets may vary by production batch. Check for obsolescence notices given the product's age. Ensure the manufacturer designation matches Analog Devices Inc. following the Maxim acquisition. Validate pinout compatibility if replacing legacy components.

Supervisors Selection Notes

Select this component when a fixed 3.0 V threshold is required for systems operating between 1.2 V and 5.5 V. Choose the SOIC-8 package for surface-mount assembly requirements. Consider the 500 ms reset delay for applications needing extended stabilization time. Verify that the open-drain output configuration aligns with the downstream logic interface needs.

Supervisors Part Context

This part belongs to the DS1233 series of voltage supervisors, which are widely used for basic power management tasks. The MS variant denotes the SOIC-8 package format, distinguishing it from TO-92 or SOT-223 options. The series is characterized by low quiescent current and high accuracy thresholds, making it suitable for general-purpose embedded designs.

Supervisors Replacement Considerations

Direct substitutes include other DS1233 variants with matching 3.0 V thresholds and SOIC-8 packages. Cross-reference with DS1233MS-3+ for identical specifications. Verify pinout compatibility with existing PCB layouts before substitution.