MAX3222EEUP/V+

Overview

The MAX3222EEUP/V+ is an automotive-qualified, full-duplex RS-232 transceiver manufactured by Analog Devices/Maxim Integrated. It operates from a single +3.0V to +5.5V supply and features two drivers and two receivers. The device incorporates a proprietary low-dropout transmitter output stage and an internal dual charge pump requiring only four 0.1µF capacitors. It guarantees data rates up to 250kbps while maintaining true RS-232 output levels. Enhanced ESD protection safeguards all transmitter outputs and receiver inputs against ±15kV Human Body Model discharges and ±8kV IEC 1000-4-2 contact discharges. The component includes a shutdown mode that reduces supply current to less than 1µA.

Feature Summary

• Automotive qualification indicated by the /V suffix for reliability in vehicle environments
• Integrated dual charge pump enables operation from a single low-voltage power supply
• Enhanced electrostatic discharge protection on all RS-232 I/O pins
• Low-power shutdown mode with active receiver monitoring capability

Applications

• Battery-powered portable equipment
• Cell phone and smartphone serial interfaces
• Notebook and subnotebook computers
• xDSL modems

Procurement Notes

Verify the specific /V suffix indicates automotive grade qualification when sourcing replacements. Confirm the package type matches the required PCB footprint. Check RoHS compliance status as manufacturing processes may vary across production runs. Ensure the supplier provides valid traceability documentation for automotive-grade components.

Selection Notes

Select this component for applications requiring robust ESD protection and low standby power consumption. The integrated charge pump simplifies design by eliminating external voltage generation circuits. Verify that the 250kbps data rate meets system requirements, as higher speeds are not supported in standard mode. Consider the operating temperature range of -40°C to +85°C for environmental suitability.

Part Context

This part belongs to the MAX3222E family of True RS-232 transceivers designed for low-voltage operation. The EEUP designation specifies the extended industrial temperature range and TSSOP-20 packaging. The /V suffix denotes automotive qualification, distinguishing it from commercial variants within the same functional family.

Replacement Considerations

MAX3222EEUP+ serves as the non-automotive equivalent with identical electrical specifications but lacks automotive qualification.