BU4316F-TR

Overview

The BU4316F-TR is a single-channel voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It operates within a supply voltage range of 0.7 V to 7 V and features an adjustable reset delay timer. The device provides a low-active push-pull/totem pole output with a typical under-voltage detection threshold of 1.6 V and ±1% accuracy. It functions in temperatures from -40°C to +125°C and is housed in a 4-SOP (SC-82) surface-mount package.

Feature Summary

• Adjustable reset delay time via external resistor
• Low-active CMOS push-pull output driver
• High precision voltage detection with hysteresis

Applications

• Microprocessor system reset circuits
• Battery-powered device supervision
• Portable equipment power management

Procurement Notes

Verify component status as obsolete or not recommended for new designs. Confirm package type matches design requirements. Check RoHS compliance documentation. Ensure availability through authorized channels only. Validate replacement options if sourcing is restricted.

Selection Notes

Select based on required detection voltage and operating temperature range. Consider output drive capability for load requirements. Verify compatibility with system reset timing needs. Evaluate package constraints for PCB layout. Assess supply chain stability due to end-of-life status.

Part Context

Part of the BU43xx series voltage detectors offering adjustable delay times. Designed for reliable supervision in consumer and industrial electronics. Provides stable reset signals during power-up and brown-out conditions. Compatible with standard CMOS logic families.

Replacement Considerations

BD5216G-1 is listed as a same-pinout replacement option. Verify electrical parameter compatibility before substitution. Check package differences between SOP4 and SSOP5. Confirm supply status and lead time for alternative sources.