MAX3243EIPWRG4

Overview

The MAX3243EIPWRG4 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V supply and features three drivers and five receivers, supporting full-duplex communication with data rates up to 250 kb/s. The device includes an integrated shutdown mode that reduces power consumption to approximately 1 µA. It provides ±15-kV IEC electrostatic discharge (ESD) protection on all RS-232 lines, ensuring robust performance in harsh environments. The component is housed in a 28-pin TSSOP package and is rated for operation over an extended temperature range of -40°C to +85°C.

Feature Summary

• Integrated ESD protection compliant with IEC 61000-4-2 standards for enhanced signal integrity
• Low-power shutdown capability significantly reducing standby current consumption
• Single-supply operation compatible with standard 3.3-V and 5-V logic systems

Applications

• Industrial control systems requiring reliable serial communication
• Portable instrumentation and battery-powered devices
• Communication equipment interfacing with PC or peripheral devices

Procurement Notes

Verify the complete part number including the suffix G4, which indicates lead-free status and RoHS compliance, against the specific project requirements. Confirm the package type is TSSOP-28 and the temperature grade is industrial (-40°C to +85°C). Ensure the ordering information matches the exact manufacturer designation to avoid compatibility issues with existing designs.

Selection Notes

Select this component when high ESD immunity is critical for RS-232 interfaces in noisy environments. It is suitable for applications needing multiple transmit and receive channels within a compact surface-mount footprint. Consider the 250 kb/s speed limit and single-supply voltage range during system design to ensure adequate performance margins.

Part Context

This device belongs to the MAX3243 family of multichannel RS-232 transceivers. It serves as a functional equivalent to older industry standards while offering improved ESD protection and lower power consumption. The G4 suffix denotes environmental compliance, distinguishing it from non-RoHS versions within the same product line.

Replacement Considerations

Direct substitutes include the TRS3243EIPWRG4, which shares identical pinout and electrical characteristics. Other variants like MAX3243IDW offer similar functionality but may differ in packaging or commercial temperature ratings.