UM4411

Overview

The UM4411 is a specialized integrated circuit designed for electrostatic discharge (ESD) and electromagnetic interference (EMI) protection in high-speed digital interfaces. It features four independent protection lines, making it suitable for applications requiring robust signal integrity maintenance. The device operates within standard industrial temperature ranges and is housed in compact surface-mount packages to facilitate efficient PCB layout.

Feature Summary

• Provides dedicated ESD and EMI suppression for multiple data lines
• Maintains signal integrity in high-speed interface environments
• Integrates protection components into a single compact package

Applications

• Color LCD interface protection
• High-speed data line shielding
• Portable electronic device input/output ports

Procurement Notes

Verify the specific package variant and tape-and-reel specifications against the official datasheet before ordering. Confirm that the component meets the required RoHS compliance standards for your manufacturing process. Ensure compatibility with existing PCB footprints by checking pin definitions and thermal requirements.

Selection Notes

Select this component when multi-line ESD protection is required for sensitive digital interfaces. Evaluate the capacitance values relative to the operating frequency of the target application. Consider the physical footprint constraints and the need for integrated EMI filtering capabilities in the design.

Part Context

Union Semiconductor International Limited focuses on bridging analog and digital worlds through detection, measurement, and amplification solutions. The UM4411 belongs to their portfolio of protection devices aimed at safeguarding electronic circuits from environmental electrical stresses while preserving data transmission quality.

Replacement Considerations

Consult official distributor databases for cross-reference part numbers. Verify functional equivalence regarding line count and protection thresholds before substitution.