MAX3223EAP-T

Overview

The MAX3223EAP-T is a low-power RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +3V to +5.5V supply and features the AutoShutdown function, reducing supply current to 1µA in shutdown mode. The device includes two drivers and two receivers for full-duplex communication with a data rate of 120kb/s. It provides ±15kV ESD protection on all pins. The component is housed in a 20-pin SSOP package and is designed for applications requiring low power consumption and robust signal integrity.

Feature Summary

• AutoShutdown technology reduces active supply current to 1µA when no valid signal is present
• Integrated charge pump eliminates the need for external capacitors in some configurations or minimizes count
• High electrostatic discharge protection rated at ±15kV on all interfaces
• True +3V to +5.5V single-supply operation compatible with standard logic levels

Applications

• Portable battery-powered equipment such as laptops and palmtop computers
• Modems and portable instruments requiring low standby current
• Industrial control systems with RS-232 communication links
• Medical equipment needing reliable serial data transmission

Procurement Notes

Verify the exact suffix 'T' indicates tape and reel packaging versus tube variants. Confirm RoHS compliance status through official manufacturer documentation. Check for lead-free specifications if required by assembly standards. Ensure the SSOP-20 footprint matches the target PCB design constraints.

Selection Notes

Select this component when low quiescent current is critical for battery life. Compare against MAX3221E for single-driver needs or MAX3243E for four drivers. Verify that the 120kb/s speed meets system requirements. Consider the 20-SSOP package size relative to available board space.

Part Context

This part belongs to the MAX322x family of RS-232 transceivers known for low power and high reliability. It shares functional similarities with the MAX3221E and MAX3243E but differs in driver/receiver counts. The MAX3223 specifically offers two drivers and two receivers, balancing performance and pin count for compact designs.

Replacement Considerations

MAX3223EAP+ serves as the non-tape-and-reel equivalent. MAX3223EEUP+T offers a TQFN package alternative. Cross-reference with MAX3221E for single-channel applications or MAX3243E for higher channel density.