BD4938G-TR

Overview

The BD4938G-TR is a standard CMOS voltage detector IC manufactured by ROHM Semiconductor. It features a fixed detection threshold of 3.8V with an accuracy of ±1%. The device operates within a supply voltage range of 0.95V to 10V and provides a CMOS output type. It includes a reset delay timer of 100µs and lacks manual reset or watchdog functions. The component is housed in a 5-pin SSOP package and supports surface mount installation.

Feature Summary

• Standard CMOS voltage detection architecture
• High accuracy threshold monitoring
• Compact surface-mount packaging

Applications

• Microcontroller system supervision
• Logic circuit power monitoring
• Embedded device voltage tracking

Procurement Notes

Verify current availability status as the component may be discontinued or not recommended for new designs. Confirm package compatibility and electrical specifications against original design requirements before procurement. Check for end-of-life notifications from the manufacturer.

Selection Notes

Select this component when a fixed 3.8V detection threshold is required for single-input voltage monitoring. Ensure the application does not require manual reset, watchdog timer, or battery backup switching features. Verify that the SSOP-5 package fits the PCB layout constraints.

Part Context

This part belongs to the BD49 series of standard CMOS voltage detectors. It is designed for applications requiring precise voltage monitoring without complex configuration options. The series offers various threshold voltages to suit different logic families and power rails.

Replacement Considerations

BD5238G-1 is listed as a similar level replacement with the same package and comparable specifications.