MAX3222ECWN+ RS-232 Interface IC by MAXIM – Efficient Serial Communication for Embedded Designs

The RS-232 Interface IC MAX3222ECWN+ by MAXIM is a dual driver/receiver that enables reliable RS-232 serial communication in embedded systems, industrial controllers, and portable devices. Designed for low-power operation with integrated charge pumps, this IC simplifies RS-232 signal conversion between TTL/CMOS logic levels and standard RS-232 levels.

In this blog, we’ll explore the technical specs, features, and applications of the MAX3222ECWN+ RS-232 Interface IC by MAXIM, and why it remains a go-to component for modern serial communication needs.

Technical Specifications of MAX3222ECWN+

• Manufacturer: MAXIM Integrated

• Part Number: MAX3222ECWN+

• Type: RS-232 Transceiver (Driver/Receiver)

• Voltage Range: 3.0V to 5.5V

• Data Rate: Up to 250 kbps

• Number of Drivers/Receivers: 2 TX / 2 RX

• ESD Protection: ±15kV Human Body Model (HBM)

• Charge Pump: Yes, onboard (no external capacitors required)

• Shutdown Mode: Yes, with low-power operation

• Package: 16-SOIC (Narrow)

• Temperature Range: -40°C to +85°C

• RoHS Compliant: Yes

The MAX3222ECWN+ RS-232 Interface IC by MAXIM delivers seamless serial interfacing with reduced power consumption and enhanced protection, ideal for space-constrained and battery-powered applications.

Key Features of MAX3222ECWN+ Interface IC

• No External Capacitors Needed – Built-in charge pump simplifies design

• Low Power Consumption – Ideal for portable and embedded devices

• Full RS-232 Compliance – Meets EIA/TIA-232 and V.28 specifications

• ±15kV ESD Protection – Enhances reliability in harsh environments

• Up to 250 kbps Data Rate – Supports high-speed asynchronous data transfer

These features make RS-232 Interface IC by MAXIM components highly dependable for robust and efficient serial communication.

Applications of MAX3222ECWN+ RS-232 IC

The MAX3222ECWN+ is widely used in:

• Microcontroller-Based Systems (UART Interface)

• Point-of-Sale Terminals

• Networking Devices and Routers

• Industrial Control Systems

• Medical Equipment Interfaces

• Handheld and Portable Devices

Whether you’re designing a serial interface for an industrial PLC or a compact handheld device, RS-232 Interface IC by MAXIM ensures reliable data transmission with minimum design effort.

Wiring and Connection Overview

Typical Setup:

MCU TX/RX - MAX3222ECWN+ - RS-232 Cable ? PC/Peripheral  
(VCC: 3.3V or 5V; GND; SHDN pin optional for power management)

With its integrated charge pump and internal logic-level translation, this IC can be dropped into designs without requiring external capacitors or extra drivers.

Use Case Scenario: Serial Debug Interface for IoT Gateway

Scenario: An IoT developer required RS-232 connectivity to debug a Linux-based gateway device using a laptop.
Problem: Existing solutions required large external capacitors and consumed excessive power.
Solution: The MAX3222ECWN+ RS-232 Interface IC by MAXIM offered a compact, capacitor-less solution with low power draw.
Result: Cleaner board layout, lower BOM cost, and seamless RS-232 communication.

Download Datasheet for MAX3222ECWN+

Need pin diagrams, electrical specs, or timing charts?

Download MAX3222ECWN+ Datasheet from Xon Electronics

Why Buy from Xon Electronics?

Xon Electronics is your reliable source for RS-232 Interface IC by MAXIM, offering:

• 100% Genuine MAXIM Components
• Global Delivery – USA, India, Australia, Europe & more
• Ready-to-Ship Inventory with Volume Discounts
• Expert Technical Support
• Secure Checkout and Fast Shipping

Order the MAX3222ECWN+ RS-232 Interface IC by MAXIM today at www.xonelec.com.

Conclusion

The MAX3222ECWN+ RS-232 Interface IC by MAXIM offers engineers a compact, efficient, and cost-effective solution for RS-232 communication in embedded systems. With its internal charge pump, low power requirements, and robust protection features, it is a top choice for reliable serial communication. Available now from Xon Electronics with global shipping to the USA, India, Australia, Europe, and other countries.

FAQs – MAX3222ECWN+ Interface IC

Q1. What is the power supply range for this IC?
It operates between 3.0V and 5.5V.

Q2. Do I need external capacitors?
No, it has an internal charge pump—no external capacitors required.

Q3. What type of ESD protection does it include?
±15kV Human Body Model ESD protection.

Q4. What’s the data rate capability?
It supports up to 250 kbps.

Q5. Can I order it internationally?
Yes, from www.xonelec.com – shipping to USA, India, Australia, Europe, and more.