DS1233MS-3

Supervisors Overview

The DS1233MS-3 is a voltage supervisory circuit from the DS1233 series, designed for microprocessor reset applications. It features a fixed threshold voltage of 4.375 V and operates within a supply voltage range of 1.2 V to 5.5 V. The device provides an active low, open-drain output with a typical reset delay time of 500 ms. It includes power-fail detection capabilities but lacks manual reset, watchdog timer, or battery backup switch functions. The component is available in an SOIC-8 surface-mount package and supports through-hole installation variants within the broader family. Operating temperatures range from -40°C to +85°C, with a quiescent current of 50 µA.

Supervisors Feature Summary

• Provides precise voltage supervision with a fixed 4.375 V threshold for reliable system monitoring
• Features an active low, open-drain output suitable for direct interfacing with logic circuits
• Integrates power-fail detection to signal out-of-tolerance conditions before reset occurs
• Operates with low quiescent current to minimize power consumption in standby modes

Supervisors Applications

• Microprocessor reset generation in embedded control systems
• Voltage supervision for single-channel power rails
• System protection in industrial and commercial electronic devices

Supervisors Procurement Notes

Verify the specific suffix designation, as the MS variant indicates a surface-mount SOIC-8 package distinct from TO-92 through-hole versions. Confirm RoHS compliance status and lead times with authorized distributors, as availability may vary by region. Ensure the selected part matches the required 4.375 V threshold and open-drain output configuration for your design.

Supervisors Selection Notes

Select this component when a fixed 4.375 V threshold is required for voltage supervision. The SOIC-8 package suits surface-mount assembly processes. Consider the 500 ms reset delay and open-drain output characteristics for compatibility with downstream logic. Verify that the absence of manual reset and watchdog features aligns with the system's safety requirements.

Supervisors Part Context

The DS1233MS-3 belongs to the Maxim Integrated DS1233 EconoReset family, which offers cost-effective voltage supervision solutions. This series typically includes variants with different thresholds and packages, such as TO-92 and SOIC formats. The MS suffix specifically denotes the surface-mount plastic small-outline integrated circuit package, distinguishing it from through-hole options like the DS1233A.

Supervisors Replacement Considerations

Direct substitutes include other DS1233 series variants with matching 4.375 V thresholds and open-drain outputs, such as the DS1233MS-5 if the threshold difference is acceptable. Cross-reference with similar voltage supervisors from other manufacturers ensuring compatible package dimensions and electrical specifications.