MAX3223EEAP/GH9

Overview

The MAX3223EEAP is a dual driver/receiver RS-232 transceiver from the Analog Devices Maxim Integrated family, designed for EIA/TIA-232 and V.28/V.24 communications interfaces. It operates on a single +3.0V to +5.5V supply with an ultra-low 1µA standby current in shutdown mode. The device supports data rates up to 250kbps and features ±15kV electrostatic discharge (ESD) protection on all lines. Packaged in a 20-pin SSOP, it integrates charge pumps to generate required voltages without external components.

Feature Summary

• Integrated automatic shutdown and wakeup functionality for significant power reduction during idle periods
• Robust ±15kV human body model ESD protection across transmitter outputs and receiver inputs
• Single-supply operation compatible with standard 3.3V and 5V logic systems
• High-speed transmission capability supporting data rates up to 250kbps

Applications

• Portable equipment requiring extended battery life through low-power standby modes
• Industrial control systems needing reliable serial communication with high ESD immunity
• Modems and fax machines utilizing standard RS-232 interface protocols
• Point-of-sale (POS) terminals and medical devices exposed to static discharge risks

Procurement Notes

Verify the suffix 'GH9' against official manufacturer documentation, as it may indicate specific tape-and-reel packaging or testing variations rather than functional differences. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability varies by region. Ensure the ordering part number matches the exact package type and temperature range required for your design.

Selection Notes

Select this component when designing for space-constrained applications requiring full-duplex RS-232 communication with minimal external capacitance. It is suitable for environments where ESD events are common, such as handheld devices or industrial panels. Compare pinout compatibility with legacy MAX232 designs if migrating existing circuits, noting the enhanced protection and lower power consumption benefits.

Part Context

This device belongs to the MAX322xE series of 3V-powered RS-232 transceivers, which share architectural similarities but differ in channel counts. While the MAX3221E offers one driver/receiver and the MAX3243E provides three drivers and five receivers, the MAX3223E specifically delivers two channels. This configuration balances complexity and performance for standard dual-port serial applications.

Replacement Considerations

Direct pin-compatible alternatives include the MAX3221E for single-channel needs or the MAX3243E for higher channel counts within the same voltage and protection specifications. Cross-reference with other Maxim RS-232 families like the MAX3232E for similar performance characteristics in different packages.