UM3308H

Overview

The UM3308H is an 8-bit bidirectional voltage-level translator manufactured by Union Semiconductor International Limited. It features auto direction sensing to facilitate seamless data transfer between different voltage domains without requiring a direction control pin. The device provides ±15kV ESD protection on all ports, ensuring robust operation in high-noise environments. It supports flexible power supply configurations for both VCCA and VCCB rails, accommodating various logic families.

Feature Summary

• Auto direction sensing eliminates the need for external direction control pins
• Provides ±15kV electrostatic discharge (ESD) protection on all ports
• Supports bidirectional data translation between independent voltage domains

Applications

• Interfacing low-voltage microcontrollers with higher-voltage peripherals
• System boards requiring multiple voltage domains
• Portable equipment needing robust ESD protection

Procurement Notes

Verify the specific suffix codes against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure the ordering part number matches the exact electrical characteristics required for your design. Cross-reference with Union Semiconductor documentation to validate RoHS compliance status and lead-free material declarations before procurement.

Selection Notes

Select this component when designing systems that require automatic detection of data flow direction without additional GPIO usage. It is suitable for applications involving mixed-voltage interfaces where standard level shifters lack sufficient ESD tolerance. Consider the operating voltage range of both A and B sides to ensure compatibility with the target logic levels.

Part Context

This component belongs to the family of bidirectional voltage translators from Union Semiconductor. It shares functional similarities with other 8-bit translators but distinguishes itself through integrated auto-direction sensing and high ESD ratings. It serves as a critical interface element in modern electronic designs bridging disparate voltage standards.