MAX3222IPWRE4

Overview

The MAX3222IPWRE4 is a dual-channel RS-232 transceiver manufactured by Texas Instruments, designed for full-duplex communication. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 500 kb/s. The device integrates two drivers and two receivers in a single package. It features low power consumption with an operating supply current of 1 mA and includes a shutdown mode for extended battery life. The component provides 15 kV electrostatic discharge (ESD) protection on all pins. It is rated for operation over an industrial temperature range from -40°C to +85°C. The unit is housed in a TSSOP-20 surface-mount package.

Feature Summary

• Integrated dual-channel RS-232 line driver and receiver functionality
• High ESD protection rating of 15 kV on all signal pins
• Low power operation with dedicated shutdown control mode
• Single capacitor charge pump design for voltage generation

Applications

• Industrial equipment serial communication interfaces
• Portable instrumentation and data acquisition systems
• Modem and communications equipment connections
• Point-of-sale terminals and barcode scanners

Procurement Notes

Verify the specific suffix RE4 indicates tape and reel packaging configuration when sourcing. Confirm the IP designation aligns with industrial temperature specifications (-40°C to +85°C). Ensure compatibility with existing PCB footprint requirements for the TSSOP-20 package. Cross-reference the manufacturer part number against official Texas Instruments documentation to validate authenticity and revision status before procurement.

Selection Notes

Select this component when dual independent RS-232 channels are required in a compact surface-mount form factor. The 500 kb/s data rate suits standard asynchronous serial applications. Consider the 3 V to 5.5 V operating range for systems powered by single batteries or regulated supplies. The integrated charge pump reduces external component count compared to older discrete solutions. Verify that the 1 mA active current meets system power budget constraints during continuous transmission.

Part Context

This part belongs to the MAX3222 family of multichannel RS-232 transceivers. The IPWRE4 suffix denotes the industrial temperature grade, plastic TSSOP package, and reel packaging format. It serves as a direct interface between microprocessors and RS-232 ports. The device simplifies board layout by integrating drivers, receivers, and charge pumps. It replaces legacy discrete transistor-based RS-232 interface circuits.

Replacement Considerations

MAX3222ECPWR: Equivalent electrical performance in TSSOP-20 package with commercial temperature range. MAX3222IDW: Similar functionality in SOIC-20 package with industrial temperature range. MAX3222CPEP: Commercial grade variant in TSSOP-20 package. Verify pinout compatibility and temperature ratings when substituting.