MAX3222EEAP

Overview

The MAX3222EEAP+ is a 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, with specific variants supporting up to 1Mbps. It incorporates an internal dual charge pump requiring only four small capacitors. Key electrical parameters include a typical operating supply current of 1mA and a shutdown supply current as low as 1μA. The component provides ±15kV ESD protection on transmitter outputs and receiver inputs. It is housed in a 20-pin SSOP package and supports an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrated dual charge pump enables true RS-232 performance from a single low-voltage supply without external inductors.
• Enhanced electrostatic discharge (ESD) protection safeguards all transmitter outputs and receiver inputs against high-voltage static events.
• Low-power shutdown mode significantly reduces supply current consumption while maintaining the ability to monitor external devices.
• Pin, package, and functional compatibility with industry-standard MAX232 devices simplifies design upgrades.

Applications

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

Procurement Notes

Verify the exact ordering suffix to confirm the specific package type and temperature range required for your application. Confirm RoHS compliance status and lead-free material specifications directly with the manufacturer or authorized distributors before placing orders. Ensure that the selected variant matches the necessary environmental operating conditions and packaging format for your manufacturing process.

Selection Notes

Select the MAX3222E series when upgrading from legacy MAX232 designs due to its direct pinout compatibility and lower power requirements. Choose this component for applications requiring robust ESD protection on I/O lines and operation from a single low-voltage rail. Consider the specific temperature grade and package style available within the EEAP suffix configuration to match your board layout and environmental constraints.

Part Context

The MAX3222E belongs to a family of low-power, true RS-232 transceivers designed for portable electronics. This series replaces older voltage-conversion solutions by integrating charge pumps directly onto the silicon die. The MAX3222E specifically offers two drivers and two receivers, making it suitable for standard serial port implementations where space and power efficiency are critical design factors.

Replacement Considerations

The MAX3222E is functionally compatible with the MAX232. Verify pinout alignment and capacitor requirements when substituting older components. Check for equivalent ESD ratings and data rate specifications to ensure system integrity during replacement.