R3114K421A-TR

Supervisors Overview

The R3114K421A-TR is a supervisory circuit manufactured by Nisshinbo Micro Devices, belonging to the R3114K series. It functions as a voltage detector with an open-drain output and features a reset delay time of 40 us. The device operates within a supply voltage range of 0.5 V to 6 V and maintains an accuracy of 0.8%. It includes a battery backup switch function but lacks manual reset and watchdog timer capabilities. The component is housed in a DFN-PLP-1010-4 package and supports surface mount installation.

Supervisors Feature Summary

• Provides precise voltage monitoring with high detection accuracy
• Integrates a dedicated battery backup switch for power continuity management
• Features an open-drain output interface for flexible logic compatibility

Supervisors Applications

• Monitoring critical voltage rails in portable electronic devices
• Ensuring system stability in battery-powered equipment
• Providing supervision for microcontroller power supplies

Supervisors Procurement Notes

Verify the specific threshold voltage designation corresponding to the '421' suffix against the official datasheet before ordering. Confirm that the DFN-PLP-1010-4 package dimensions align with the target PCB footprint. Ensure the open-drain output configuration meets the downstream circuit requirements without additional pull-up components if not already present.

Supervisors Selection Notes

Select this component when a low operating voltage start-up capability down to 0.5 V is required alongside standard voltage supervision. The 40 us reset delay is suitable for applications where rapid response is needed without excessive noise immunity filtering. Consider the 0.8% accuracy tolerance for precision-critical designs compared to lower-accuracy alternatives.

Supervisors Part Context

This part belongs to the R3114K series of voltage detectors from Nisshinbo Micro Devices. The series is characterized by low power consumption and compact packaging options suitable for space-constrained designs. The K-series variants typically utilize the DFN-PLP-1010-4 package, distinguishing them from other series members that may use different form factors.

Supervisors FAQ

Does the R3114K421A-TR include a manual reset input?

No, the device does not feature a manual reset function.

What is the maximum supply voltage for this component?

The maximum operating supply voltage is 6 V.