BD49E40G-TR

Overview

The BD49E40G-TR is a CMOS output voltage detector IC from the BD49 series, designed for processor supervision. It features a fixed detection threshold of 4.0V with ±1% precision accuracy. The device operates within a supply voltage range of 0.95V to 10V and includes a reset delay timer. It utilizes an active-low CMOS output and offers hysteresis defined as Vs x 0.05. Packaged in a 5-pin SSOP, it supports industrial temperatures from -40°C to +105°C.

Feature Summary

• High-precision voltage detection with ±1% accuracy tolerance
• CMOS output interface with active-low reset signal
• Integrated reset delay timer for stable power-up sequencing
• Wide operating supply voltage range up to 10V

Applications

• Processor supervisor circuits
• Battery voltage monitoring systems
• Power management unit oversight

Procurement Notes

Verify component authenticity through authorized ROHM distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance documentation upon receipt. Check for NRND status implications regarding long-term availability and lifecycle support before finalizing procurement plans.

Selection Notes

Select this component when a fixed 4.0V threshold with high accuracy is required. Ensure the application does not need manual reset functionality or watchdog timers. Verify that the CMOS output drive capability meets load requirements and that the SSOP-5 package fits the PCB layout constraints.

Part Context

Part of the BD49xxx series of low-current voltage detectors. This specific model provides a 4.0V detection point. The series is characterized by CMOS outputs and high accuracy, suitable for general-purpose power monitoring where precise threshold detection is critical for system stability.

Replacement Considerations

BD5240G-1TR is listed as a same-package replacement. Note differences in output type (Open drain vs CMOS) and reset delay characteristics. Verify electrical compatibility before substitution.