MAX3222ECAP

Overview

The MAX3222ECAP+T is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-pin SSOP package. 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 with worst-case loads of 3kΩ parallel to 1000pF. It incorporates an internal dual charge pump requiring only four 0.1μF capacitors. Enhanced ESD protection provides ±15kV Human Body Model tolerance. A shutdown mode reduces supply current to less than 1μA while keeping receivers active.

Feature Summary

• Internal dual charge pump generates required voltage levels from a single low-voltage supply using minimal external components.
• Enhanced electrostatic discharge protection safeguards transmitter outputs and receiver inputs against high-voltage static events.
• Low-power shutdown mode significantly reduces consumption while maintaining receiver monitoring capability for external devices.

Applications

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

Procurement Notes

Verify the specific suffix 'CAP' confirms the 20-pin SSOP package and commercial temperature range (0°C to +70°C). Confirm the '+' suffix indicates lead-free and RoHS compliance status as defined by the manufacturer's current standards. Ensure the ordering code matches the exact pinout and functional requirements for the target design.

Selection Notes

Select this component when space-constrained designs require compatibility with industry-standard MAX242/MAX232 pinouts but need lower voltage operation. It is suitable for applications needing persistent receiver monitoring during system sleep states. Verify that the 250kbps standard rate meets the interface speed requirements before considering higher-speed variants.

Part Context

This part belongs to the MAX3222E family of +3.0V-powered RS-232 transceivers. It shares functional compatibility with legacy MAX232 devices but offers improved power efficiency and ESD robustness. The ECAP variant specifically denotes the SSOP packaging option within the broader MAX3222 product line.

Replacement Considerations

MAX3222EEAP+ serves as the industrial temperature range (-40°C to +85°C) equivalent with identical pinout and functionality. Direct replacements must maintain the 20-pin SSOP form factor and full-duplex 2Tx/2Rx configuration.