BU4334FVE-TR

Overview

The BU4334FVE-TR is a CMOS low-voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features a fixed threshold voltage of 3.4 V with an accuracy of ±1%. The device operates within a supply voltage range up to 7 V and consumes a typical quiescent current of 550 nA. It provides a CMOS output type and includes an adjustable reset delay timer. The component is housed in a VSOF-5 surface-mount package and supports an operating temperature range from -40°C to +125°C.

Feature Summary

• CMOS output interface for direct logic integration
• Adjustable reset delay timer functionality
• Low power consumption with nanoampere standby current
• High precision voltage detection with 1% accuracy

Applications

• Microprocessor system reset circuits
• Battery-powered device monitoring
• Portable electronic equipment supervision
• Embedded system voltage tracking

Procurement Notes

This component is officially listed as obsolete and no longer in production. Verification of availability should focus on surplus or secondary market sources rather than direct manufacturer distribution. Ensure that any sourced units are authentic and match the original specifications, as replacement parts like the BD5234G-1 may offer similar pinouts but differ in package type and electrical characteristics.

Selection Notes

Select this part when a fixed 3.4 V threshold with adjustable delay is required in a VSOF-5 package. Consider the BD5234G-1 for a pin-compatible alternative if the SSOP-5 package is acceptable. Verify that the CMOS output drive capability meets the load requirements, as it differs from open-drain options found in other series members.

Part Context

The BU4334FVE-TR belongs to the BU42(43)xxFVE series of voltage detectors. This family focuses on low-voltage monitoring with adjustable timing features. The specific suffix indicates the tape-and-reel packaging format. It is distinct from the BU48xx series which utilizes open-drain outputs.

Replacement Considerations

The BD5234G-1 is documented as a recommended substitute with the same pinout. Note that the BD5234G-1 uses an SSOP-5 package instead of VSOF-5 and features an open-drain output rather than CMOS.