UM8401

Overview

The UM8401 is an integrated low-pass filter array featuring built-in transient voltage suppression (TVS) diodes, manufactured by Union Semiconductor. Designed for color LCD interfaces, this component provides eight-channel electrostatic discharge (ESD) and electromagnetic interference (EMI)/radio frequency interference (RFI) protection. It utilizes silicon avalanche technology to suppress unwanted signals in portable electronic devices while maintaining signal integrity across the interface lines.

Feature Summary

• Integrates low-pass filtering with TVS diode protection in a single array
• Provides dedicated ESD and EMI/RFI suppression for display interfaces
• Utilizes silicon avalanche technology for robust signal protection

Applications

• Color LCD interface protection
• Portable electronic device signal lines
• Display data line filtering

Procurement Notes

Verify the manufacturer designation as Union Semiconductor International Limited when sourcing. Confirm that the part number corresponds specifically to the eight-line ESD/EMI protection array. Ensure documentation references the silicon avalanche construction and low-pass filter integration. Cross-reference official datasheets to validate the component's intended use for color LCD interfaces and portable electronics before procurement.

Selection Notes

Select the UM8401 when designing circuits requiring simultaneous filtering and protection for multiple display interface lines. This component is suitable for applications where space constraints necessitate integrating both EMI suppression and ESD protection into a single package. It addresses the need for signal integrity maintenance in portable devices exposed to environmental noise and static discharge events.

Part Context

Union Semiconductor International Limited specializes in high-performance linear and mixed-signal integrated circuits. The company designs products that bridge analog and digital domains, focusing on detection, measurement, amplification, and power supply conversion. The UM8401 represents their solution for protecting sensitive interface connections in consumer electronics against electrical disturbances.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with existing circuit designs if considering alternative components from other manufacturers offering similar eight-channel ESD/EMI protection arrays.