MCP1321T-29CE/OT

Supervisors Overview

The MCP1321T-29CE/OT is a single-channel voltage supervisor IC manufactured by Microchip Technology. It monitors one input voltage with a fixed threshold of 2.9V and operates within a supply range up to 5.5V. The device provides active low push-pull output and includes a watchdog timer with an interval of 1600ms and a reset delay of 1.4ms. It features manual reset capability and is housed in a SOT-23-5 package, suitable for surface mount applications across a temperature range of -40°C to +125°C.

Supervisors Feature Summary

• Integrates a watchdog timer with configurable interval and reset delay functions
• Provides manual reset input for system control flexibility
• Delivers active low push-pull output signal for direct interface compatibility

Supervisors Applications

• Microcontroller and processor voltage supervision
• Embedded systems requiring reliable power monitoring
• Industrial automation control circuits

Supervisors Procurement Notes

Verify the specific suffix CE against the manufacturer's current datasheet to confirm the exact watchdog interval and reset delay parameters, as these values can vary significantly across different suffixes within the same family. Ensure the SOT-23-5 package footprint matches your PCB design requirements before finalizing procurement decisions.

Supervisors Selection Notes

Select this component when a fixed 2.9V threshold is required alongside integrated watchdog functionality. The active low push-pull output simplifies logic interfacing compared to open-drain alternatives. Consider the manual reset feature if external system intervention is needed during operation.

Supervisors Part Context

This part belongs to the MCP1321 supervisory circuit family from Microchip Technology. These devices are designed for simple reset and power-on reset applications. The MCP1321 series offers various threshold voltages and output configurations to suit diverse embedded system requirements while maintaining small form factor packaging.

Supervisors Replacement Considerations

Check for MCP1321T-29DE/OT or MCP1321T-29LE/OTVAO if different watchdog intervals or automotive qualification are needed. Verify that alternative parts maintain the same 2.9V threshold and SOT-23-5 package to ensure pin-to-pin compatibility without redesigning the host board.