DS1238S-10+

Supervisors Overview

The DS1238S-10+ is a MicroManager supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a voltage range of 4.5 V to 5.5 V and utilizes a 16-SOIC package for surface mount installation. The device monitors a single input with an undervoltage threshold of 4.25 V and an overvoltage threshold of 4.5 V. It features active high and active low outputs, a manual reset function, and a watchdog timer. The reset delay time is specified at 150 ms, while the power supply current consumption is 4 mA. The component supports battery backup switching and power failure detection, functioning reliably across an operating temperature range from -40°C to +85°C.

Supervisors Feature Summary

• Holds microprocessor in check during power transients
• Converts CMOS SRAM into nonvolatile memory via battery backup
• Unconditionally write-protects memory when power supply is out of tolerance
• Debounces pushbutton reset for manual control

Supervisors Applications

• Microprocessor orderly shutdown systems
• CMOS SRAM nonvolatile memory conversion
• High current applications with external power switch control

Supervisors Procurement Notes

Verify the specific suffix designation against official documentation to confirm pinout compatibility and electrical characteristics. Confirm the manufacturing source as Analog Devices or Maxim Integrated to ensure authenticity. Check for RoHS compliance status if required by assembly specifications. Validate the package type matches the intended PCB footprint. Review the datasheet for any revisions that may impact parameter tolerances.

Supervisors Selection Notes

Select this component for applications requiring comprehensive power management supervision including brown-out protection and watchdog functionality. Ensure the operating voltage range aligns with the system's power supply rails. Consider the 16-SOIC package constraints for board space limitations. Verify that the manual reset and NMI inputs meet the system's interface requirements. Evaluate the thermal performance within the specified industrial temperature range.

Supervisors Part Context

This part belongs to the DS1236/DS1238 series of MicroManager circuits designed for robust power monitoring. It serves as a critical component in embedded systems to prevent data corruption during power anomalies. The device integrates multiple supervisory functions into a single chip, reducing component count compared to discrete solutions. It is compatible with standard CMOS logic families and offers pin-for-pin compatibility with related legacy parts like the MAX691.

Supervisors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.