MAX3209EEUU+T

Overview

The MAX3209EEUU+T is a dual RS-232 serial port transceiver designed for motherboards and desktop PCs. It integrates two complete serial ports with six transmitters and ten receivers in a single 38-pin TSSOP package. The device operates from a +10.8V to +13.2V supply (VDD) and a +3V to +5.5V logic supply (VSTBY), eliminating the need for an external negative power supply through its integrated charge pump. It supports data rates up to 460kbps and features low-power standby mode with 50µA current consumption, allowing automatic system wake-up via active receivers R5 and R10.

Feature Summary

• Integrates dual serial ports with six transmitters and ten receivers in a compact 38-pin TSSOP package
• Provides enhanced ESD protection meeting IEC 1000-4-2 standards with ±15kV air-gap and ±8kV contact discharge immunity
• Features low-power standby mode that maintains receiver activity for system wake-up while minimizing power consumption
• Guarantees mouse driveability and true RS-232 operation without requiring a negative voltage supply

Applications

• Desktop PCs
• Motherboards
• Instruments and equipment requiring IEC 1000-4-2 compliance
• Telecommunications systems
• Network servers

Procurement Notes

Verify the component authenticity by checking the manufacturer marking against the official datasheet specifications. Confirm the ordering suffix matches the extended temperature range (-40°C to +85°C) and lead-free status (+). Ensure the package type corresponds to the 38-pin TSSOP configuration required for your design.

Selection Notes

Select this component when designing systems requiring dual RS-232 interfaces with high ESD immunity and low standby power. It is suitable for applications needing direct interfacing with 3V or 5V logic families. Consider the specific VDD and VSTBY supply requirements and ensure adequate layout practices for ESD protection are implemented.

Part Context

The MAX3209E belongs to Maxim Integrated's family of RS-232 transceivers designed for PC and industrial applications. This specific part number represents the extended temperature variant packaged in a 38-pin TSSOP. It complements other interface solutions by offering integrated charge pumps and robust protection features within a small footprint.

Replacement Considerations

Check for pin-compatible alternatives such as the MAX3208 series if fewer channels are sufficient. Verify that any substitute maintains the same ESD protection levels and standby functionality. Ensure the replacement supports the required data rate and logic voltage compatibility.