MAX3222CPW

Overview

The MAX3222CPW is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3 V to 5.5 V power supply and features two drivers and two receivers for full-duplex communication. The device supports data rates up to 250 kb/s with a typical operating supply current of 1 mA. It utilizes a 20-TSSOP surface-mount package and includes an integrated shutdown mode to minimize power consumption during low-power applications. The component is rated for operation within a temperature range of 0°C to +70°C.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external voltage conversion components
• Shutdown feature significantly reduces supply current for battery-powered systems
• Compliant with EIA/TIA-232-F and ITU-T V.28 standards for reliable signal integrity

Applications

• Industrial control systems requiring serial communication interfaces
• Portable instrumentation and handheld devices
• Modem and communications equipment
• Point-of-sale terminals and barcode scanners

Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm the commercial grade temperature rating and packaging configuration. Ensure that the ordering information matches the required TSSOP-20 footprint and pinout specifications for your PCB layout. Cross-reference the datasheet revision history to validate any recent design changes or updates before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel RS-232 interface is required for standard voltage levels. Consider the MAX3222E variant if extended industrial temperature ranges are necessary. Evaluate the MAX3232 series if only a single channel is sufficient, as it may offer cost advantages. Verify that the system's power budget accommodates the internal charge pump requirements and that the 250 kb/s speed meets application timing constraints.

Part Context

This part belongs to the MAX3222 family of RS-232 transceivers designed for low-power applications. It shares functional similarities with other members like the MAX3222IDW but differs in temperature rating and package type. The CPW designation specifically indicates the commercial temperature range and TSSOP packaging format within the broader product line.

Replacement Considerations

The MAX3222ECPWR serves as a compatible alternative offering extended temperature capabilities. The MAX3232CPE provides a single-channel option for simplified designs. Verify pin compatibility and electrical characteristics before substituting these parts in existing hardware configurations.