BU4914G-TR

Supervisors Overview

The BU4914G-TR is a CMOS voltage detector IC from ROHM Semiconductor, designed for monitoring single power supply lines. It operates within a supply voltage range of 0.7 V to 7 V and features a typical under-voltage detection threshold of 1.4 V with ±1% precision. The device provides a low-active CMOS output without manual reset or watchdog timer functions. It consumes 0.40 μA in the ON state and 0.55 μA in the OFF state at VDET=4.8 V. Operating temperatures span from -40°C to +125°C, housed in an SSOP-5 package.

Supervisors Feature Summary

• CMOS output structure providing low power consumption suitable for battery-operated systems
• High accuracy voltage detection with ±1% tolerance on the threshold voltage
• Wide operating supply voltage range supporting various low-voltage logic families

Supervisors Applications

• Portable electronic devices requiring low standby current
• Microprocessor system reset circuits
• Battery-powered equipment monitoring

Supervisors Procurement Notes

Verify component authenticity through authorized distributors as this part is Not Recommended for New Designs (NRND). Confirm package integrity upon receipt, as SSOP-5 components are sensitive to moisture. Check RoHS compliance documentation against current regulatory requirements before integration into final assemblies.

Supervisors Selection Notes

Select this component when a fixed 1.4 V threshold is required for system supervision. Compare static current specifications against alternative detectors if ultra-low power is critical. Ensure the CMOS output drive capability meets the input requirements of the downstream logic circuitry without additional buffering.

Supervisors Part Context

This part belongs to the BU4910 series of standard voltage detectors. It shares the SSOP-5 footprint with other variants like BU4910G and BU4913G but differs in detection thresholds. The series is characterized by low current consumption and high precision, targeting portable applications where space and power efficiency are constrained.

Supervisors Replacement Considerations

The BD5250G-1 is listed as a recommended replacement with the same SSOP-5 package. Note that the BD5250G-1 has a different detection voltage (5.0 V) and open-drain output, requiring schematic adjustments.