MAX3222ECPWG4

Overview

The MAX3222ECPWG4 is a dual-channel RS-232 transceiver manufactured by Texas Instruments, designed for full-duplex data 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 TSSOP-20 surface-mount package. Key electrical specifications include a maximum operating temperature of +85°C and a minimum of -40°C. It features low power consumption with an operating supply current of 1 mA and includes a shutdown mode for energy efficiency. The component provides 15 kV ESD protection on all pins.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external capacitors in some configurations, simplifying board layout.
• Provides robust electrostatic discharge (ESD) protection rated at 15 kV across all signal pins.
• Includes a dedicated shutdown pin to minimize power consumption during idle periods.
• Ensures reliable signal integrity through guaranteed ±3-V output voltages for RS-232 compliance.

Applications

• Portable equipment requiring RS-232 connectivity with limited power budgets
• Industrial control systems utilizing serial communication interfaces
• Modems and handheld terminals needing full-duplex data transmission

Procurement Notes

Verify the suffix 'G4' indicates lead-free status and RoHS compliance per Texas Instruments documentation. Confirm the TSSOP-20 package variant matches design requirements. Cross-reference the manufacturer part number with official TI databases to ensure authenticity. Check for any specific environmental or handling instructions provided in the latest datasheet revision.

Selection Notes

Select this component when dual-channel RS-232 communication is required within a 3-V to 5.5-V supply range. It is suitable for applications demanding low standby current due to its shutdown feature. Ensure the TSSOP-20 package fits the PCB footprint constraints. Compare against single-channel alternatives if only one port is needed to optimize cost and space.

Part Context

This part belongs to the MAX3222 family of multichannel RS-232 line drivers and receivers. It is functionally similar to the MAX3222ECPW but includes the 'G4' suffix denoting green/RoHS-compliant manufacturing. It serves as a direct replacement for older generations of dual RS-232 transceivers in legacy designs upgrading for environmental compliance.

Replacement Considerations

The MAX3222ECPW is the non-green equivalent. Verify that the G4 suffix does not alter electrical characteristics beyond compliance. Other compatible parts in the series include MAX3222EIDR for SOIC packages.