BU1850MUV-E2

Overview

The BU1850MUV-E2 is an I/O expander integrated circuit manufactured by ROHM Semiconductor. It provides eight general-purpose input/output channels accessible via an I2C interface operating at speeds up to 400 kHz. The device is housed in a VQFN016V3030-16 surface-mount package designed for compact electronic applications. This component functions as a digital logic interface, expanding system connectivity without requiring additional microcontroller pins.

Feature Summary

• Provides eight configurable general-purpose I/O channels
• Utilizes standard I2C communication protocol
• Supports high-speed data transfer rates up to 400 kHz
• Designed for space-constrained surface-mount implementations

Applications

• Embedded systems requiring GPIO expansion
• Consumer electronics with limited pin availability
• Industrial control interfaces
• Smart home automation devices

Procurement Notes

Verify the current lifecycle status before procurement, as official documentation indicates this specific part number may be discontinued or subject to supply restrictions. Confirm compatibility with existing I2C bus architectures and voltage levels. Ensure the VQFN016V3030-16 footprint matches the target PCB design. Consult authorized distributors for availability of equivalent replacement components if active stock is unavailable.

Selection Notes

Select this component when an application requires multiple digital inputs or outputs controlled via a two-wire serial interface. The 400 kHz speed supports most standard peripheral communication needs. Consider the physical dimensions of the VQFN016V3030-16 package during layout planning. Verify that the host controller supports the required I2C addressing scheme for eight-channel expansion.

Part Context

This IC belongs to ROHM's line of interface solutions, specifically categorized under I/O expanders. It serves as a bridge between main processors and external peripherals, reducing board complexity. The product falls within the broader PMIC and interface IC portfolio, focusing on digital signal management rather than power conversion or analog processing.

Replacement Considerations

Official notices indicate potential discontinuation. Evaluate alternative ROHM I/O expanders with compatible pinouts and I2C specifications. Cross-reference functional requirements with newer generation parts to ensure long-term supply stability and feature parity.