MAX3209ECUU+

Overview

The MAX3209ECUU+ is a dual RS-232 transceiver designed for motherboards and desktop PCs, integrating two serial ports and an inverting charge pump within a single 38-pin TSSOP package. It operates from a +10.8V to +13.2V supply (VDD) and a +3V to +5.5V logic supply (VSTBY), eliminating the need for external negative voltage rails. The device supports data rates up to 460kbps with guaranteed mouse driveability. It features enhanced ESD protection rated at ±15kV via Human Body Model and IEC 1000-4-2 Air-Gap Discharge, alongside ±4kV Electrical Fast Transient immunity per IEC 1000-4-4. A low-power standby mode draws a maximum of 100µA while keeping receivers R5 and R10 active for system wake-up capabilities.

Feature Summary

• Integrates two complete serial ports and a charge pump into a compact 38-pin TSSOP package
• Provides enhanced ESD protection compliant with IEC 1000-4-2 standards without additional components
• Supports low-power standby operation with automatic system wake-up functionality
• Ensures compatibility with PC-to-PC communication software through guaranteed mouse driveability

Applications

• Desktop PCs
• Motherboards
• Instruments
• Equipment Requiring IEC 1000-4-2 Compliance
• Telecommunications
• Network Servers

Procurement Notes

Verify that the component matches the specific EC suffix indicating the commercial temperature range of 0°C to +70°C. Confirm the presence of the '+' designation to ensure compliance with RoHS directives. Cross-reference the manufacturer part number against official Analog Devices or Maxim Integrated documentation to validate authenticity and revision status before integration.

Selection Notes

Select this component when designing systems requiring dual RS-232 interfaces with minimal board space and power consumption. It is suitable for applications needing robust ESD protection meeting European Community standards. Ensure the design accommodates a +12V supply rail for VDD and a separate +3V or +5V logic supply for VSTBY to utilize the full feature set effectively.

Part Context

The MAX3209E belongs to a family of dual RS-232 transceivers optimized for computing platforms. Variants include the EE suffix for extended industrial temperature ranges (-40°C to +85°C) and alternative packaging options such as the 6x6 QFN. This specific EC part represents the commercial grade version housed in a standard thin-shrink small outline package.

Replacement Considerations

Public confirmed substitute part numbers: MAX3209EEUU, MAX3209EEGL.