The MAX3221ECAE is a high-performance, single-transmitter, single-receiver RS-232 interface device from Maxim Integrated, designed to meet the stringent requirements of battery-powered applications. It operates from a single +3.0V to +5.5V power supply, making it ideal for portable devices where power efficiency is critical.

Key Features

• Low Power Consumption: The device features a low-power shutdown mode which reduces power consumption to 1µA (typ), extending the battery life of portable devices.
• Integrated Charge Pump: With an onboard charge pump circuit, the MAX3221ECAE generates the necessary RS-232 voltage levels (+/-10V) from a single power supply, eliminating the need for multiple power sources.
• High Data Rate: Capable of supporting data rates up to 250kbps, the device is suitable for high-speed serial communication.
• Electrostatic Discharge (ESD) Protection: The MAX3221ECAE offers a robust ESD protection for the RS-232 I/O pins, ±15kV Human Body Model (HBM), ensuring reliability and durability in harsh environments.
• Small Footprint: Housed in a 16-pin SSOP (Shrink Small Outline Package), the device requires minimal board space, which is crucial for space-constrained applications.

Applications

The MAX3221ECAE is versatile and can be used in a variety of applications, including:

• Portable Computing Devices
• Battery-Powered Equipment
• Notebooks, Laptops, and PDAs
• Data Cable Applications

Technical Specifications

Parameter Value Supply Voltage Range +3.0V to +5.5V Data Rate 250kbps Number of Receivers 1 Number of Transmitters 1 ESD Protection ±15kV HBM Package Type 16-pin SSOP

Overall, the MAX3221ECAE from Maxim Integrated is a reliable and efficient solution for RS-232 communication in portable applications where space and power consumption are at a premium.