MAX3222EEAP+T

Overview

The MAX3222EEAP+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 at normal operation, with specific configurations supporting up to 1Mbps. It incorporates an internal dual charge pump requiring only four 0.1μF capacitors. ESD protection is rated at ±15kV (Human Body Model) and ±8kV (IEC Contact Discharge). Supply current is typically 1mA, dropping to 1μA in shutdown mode.

Feature Summary

• Integrated dual charge pump enables true RS-232 performance from a single low-voltage supply without external inductors.
• Enhanced electrostatic discharge protection safeguards all transmitter outputs and receiver inputs against high-voltage static events.
• Dedicated shutdown control pin reduces power consumption significantly while maintaining the ability to monitor external devices.
• Compatible with industry-standard MAX232 pinouts, facilitating direct upgrades for existing designs.

Applications

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

Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the ordering suffix matches the required temperature range and package type. Ensure compliance with RoHS standards as indicated by the plus sign in the part number. Cross-reference the datasheet revision to confirm electrical characteristics align with your design requirements.

Selection Notes

Select this component when designing systems requiring low-power RS-232 interfaces with robust ESD protection. It is suitable for applications where space is limited due to the small capacitor requirements of the charge pump. Consider the shutdown feature for battery-operated devices to extend operational life. Verify that the 250kbps standard rate meets the system's baud rate needs.

Part Context

This device belongs to the MAX3222E/MAX3232E family of RS-232 transceivers designed for 3V-powered applications. It serves as a modern replacement for legacy MAX232 components, offering improved power efficiency and higher ESD tolerance. The EE suffix denotes the extended industrial temperature range, making it appropriate for demanding environments.

Replacement Considerations

The MAX3222EEAP+T is functionally compatible with the industry-standard MAX232. Designers upgrading from older RS-232 chips can often use this component directly due to pin compatibility. Ensure that the external capacitor values are adjusted to meet the specific requirements of the charge pump circuit.