BU4314FVE-TR

Overview

The BU4314FVE-TR is a CMOS low-voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features a fixed threshold voltage of 1.4 V with an overvoltage detection threshold of 1.414 V and high accuracy of 1%. The device operates within a supply voltage range up to 7 V and consumes a typical operating current of 550 nA. It provides an adjustable reset delay time and utilizes a VSOF-5 surface-mount package. The component supports an extended industrial temperature range from -40°C to +125°C and includes no manual reset, watchdog timer, or battery backup switch functions.

Feature Summary

• CMOS output type ensures compatibility with standard digital logic interfaces.
• Adjustable reset delay time allows customization of response timing via external components.
• High detection accuracy of 1% ensures reliable voltage monitoring performance.

Applications

• Microprocessor system power supply monitoring
• Battery-operated device voltage supervision
• Embedded system reset signal generation

Procurement Notes

Verify component authenticity through authorized distribution channels due to end-of-life status. Confirm RoHS compliance documentation matches the specific manufacturing batch. Validate that the VSOF-5 package dimensions align with PCB footprint requirements. Ensure storage conditions prevent moisture damage prior to reflow soldering processes.

Selection Notes

Select this component when a precise 1.4 V threshold is required for low-voltage systems. Consider the adjustable delay feature if timing control is necessary for system stability. Evaluate the low standby current consumption for battery-sensitive designs. Verify that the CMOS output drive capability meets the load requirements of the connected circuitry.

Part Context

This part belongs to the BU42(43)xxFVE series of voltage detectors. It shares common family characteristics such as the VSOF-5 package and CMOS output structure. The series offers various threshold voltages to suit different application needs while maintaining consistent operational parameters like supply voltage limits and temperature ranges.

Replacement Considerations

BD5214G-1TR is a recommended replacement with the same pinout configuration. Note that the substitute uses an SSOP5 package instead of VSOF5, requiring mechanical adaptation. The replacement maintains similar detection voltage and adjustable delay functionality.