MAX222MWN/PR

Overview

The MAX222MWN/PR is a dual RS-232 line driver and receiver manufactured by Analog Devices Inc./Maxim Integrated. Designed for +5V power supplies, this interface IC integrates charge pumps to generate the necessary voltages for EIA/TIA-232E communication without external components. It features two drivers and two receivers with tristate outputs. The device operates within a supply voltage range of 4.5V to 5.5V and supports data rates up to 120kbps. It is housed in an 8-pin MSOP package and functions across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump eliminates the need for external capacitors
• Tristate outputs allow bus sharing in multi-drop configurations
• Single +5V power supply operation simplifies system design

Applications

• Portable battery-powered equipment requiring RS-232 connectivity
• Industrial control systems with limited space constraints
• Modem interfaces in compact embedded devices

Procurement Notes

Verify the specific suffix PR against official Analog Devices documentation to confirm tape-and-reel packaging and quantity specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with authorized distributor catalogs to confirm current production status and availability channels.

Selection Notes

Select this component when designing systems that require dual-channel RS-232 communication powered solely by a single +5V rail. It is suitable for applications where board space is limited due to the elimination of external charge pump capacitors. Compare performance metrics such as data rate and operating temperature against alternative Maxim Integrated RS-232 transceivers if higher speeds or extended temperature ranges are required.

Part Context

The MAX222 belongs to the broader MAX220–MAX249 family of +5V-powered multichannel RS-232 drivers and receivers. This series is widely recognized for enabling serial communications in environments where traditional ±12V supplies are unavailable. The MAX222 specifically provides a dual-driver solution within a compact footprint, serving as a foundational interface component for legacy serial protocols in modern low-voltage systems.

Replacement Considerations

The MAX222EVSI+T is a documented equivalent offering similar dual-channel functionality. Verify pin compatibility and electrical characteristics before substitution.