MAX3222EEWN+T

Overview

The MAX3222EEWN+T is a low-power, true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +3.0V to +5.5V supply and features two drivers and two receivers for full-duplex communication. The device guarantees data rates up to 250kbps under standard conditions, with propagation delays of 0.15µs typical. It incorporates an internal dual charge pump requiring only four 0.1µF capacitors. Enhanced ESD protection provides ±15kV Human Body Model tolerance. The part includes a shutdown mode reducing supply current to less than 1µA while keeping receivers active. It is housed in an 18-pin Wide SO package and supports an operating temperature range from -40°C to +85°C.

Feature Summary

• Integrated dual charge pump enables operation from a single +3.0V to +5.5V supply using minimal external capacitance.
• Enhanced electrostatic discharge protection ensures robustness against ±15kV Human Body Model discharges on all I/O pins.
• Low-power shutdown mode reduces supply current to below 1µA while maintaining receiver activity for external monitoring.
• Pin, package, and functionally compatible with industry-standard MAX242 devices.

Applications

• Battery-powered portable equipment
• Cell phone and smartphone data cables
• Notebook, subnotebook, and palmtop computers

Procurement Notes

Verify the specific ordering suffix 'T' against official manufacturer documentation to confirm tape-and-reel packaging status. Confirm that the Wide SO (SO-Wide-18) package dimensions match your PCB footprint requirements. Ensure the industrial temperature grade (-40°C to +85°C) aligns with your system's environmental specifications before finalizing procurement.

Selection Notes

Select this component when designing systems requiring compatibility with legacy MAX242/MAX232 interfaces but needing lower power consumption. It is suitable for applications where battery life is critical due to the ultra-low shutdown current. Choose this variant over non-E versions if high ESD immunity is required for exposed connectors or data cables.

Part Context

This device belongs to the MAX3222E family of True RS-232 Transceivers. It shares functional similarities with the MAX3232E and MAX3241E but is distinct in its driver/receiver count and pinout configuration. The EE suffix indicates the extended industrial temperature range, while the WN+ denotes the specific 18-pin Wide SOIC package and lead-free/RoHS compliance.

Replacement Considerations

The MAX3222ECWN+ serves as a commercial-grade replacement with a 0°C to +70°C range. For direct pin-compatible upgrades requiring higher speed, consider the MAX3237E which supports MegaBaud rates. Verify that any substitute maintains the same 18-pin Wide SO package and voltage supply requirements.