BU4814F-TR

Supervisors Overview

The BU4814F-TR is a standard voltage detector manufactured by ROHM Semiconductor, designed for monitoring single-channel power supply voltages. It features an open-drain output with a low-active reset signal and operates within a detection voltage range of 0.7 V to 7 V. The typical under-voltage detection threshold is 1.4 V with a precision of ±1%. The device consumes a circuit current of 0.40 μA (ON) and 0.55 μA (OFF) at VDET=4.8V. It supports a maximum operating temperature of 125°C and is housed in a compact SOP-4 package.

Supervisors Feature Summary

• Provides precise voltage supervision with high accuracy for reliable system monitoring
• Features low power consumption suitable for battery-operated applications
• Offers flexible reset timing without requiring external delay components

Supervisors Applications

• Portable electronic devices requiring low standby current
• Microprocessor reset circuits in industrial control systems
• Battery-powered equipment needing voltage level monitoring

Supervisors Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance and package integrity upon receipt. Check for last-time-buy availability constraints before finalizing procurement plans. Ensure storage conditions meet semiconductor handling standards to prevent moisture damage or electrostatic discharge during installation.

Supervisors Selection Notes

Select this component when a fixed 1.4 V threshold is required for single-supervision tasks. Consider the SOP-4 package size for space-constrained PCB layouts. Evaluate the open-drain output compatibility with downstream logic levels. Compare static current specifications against alternative detectors if ultra-low power is critical for the specific application environment.

Supervisors Part Context

This part belongs to the BU4814 series of standard voltage detectors from ROHM Semiconductor. It is specifically engineered for simple reset generation in CMOS digital circuits. The series typically includes variants with different detection thresholds to accommodate various voltage rails in embedded systems.

Supervisors Replacement Considerations

BD5214G-1 is listed as a recommended replacement with similar specifications but uses an SSOP-5 package instead of SOP-4.