MAX3232CDWRG4

Overview

The MAX3232CDWRG4 is a dual-channel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3 V to 5.5 V power supply, utilizing internal charge pumps to generate the necessary voltages for RS-232 signaling without external inductors. The device features two drivers and two receivers, supporting full-duplex communication at data rates up to 250 kbps. It includes ±15 kV electrostatic discharge (ESD) protection on all RS-232 lines. The component is housed in a 16-pin SOIC package and is designed for applications requiring reliable serial communication interfaces.

Feature Summary

• Integrated charge pump circuitry eliminates the need for external inductors or transformers.
• Provides robust ±15 kV ESD protection on transmit and receive lines.
• Supports operation with a single low-voltage power supply ranging from 3 V to 5.5 V.
• Ensures compatibility with standard RS-232 voltage levels for serial communication.

Applications

• Connecting microcontrollers or DSPs to PC serial ports.
• Industrial control systems requiring isolated serial communication links.
• Portable battery-powered devices needing low-power RS-232 connectivity.

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free compliance and RoHS adherence as per Texas Instruments standards. Confirm the SOIC-16 package dimensions match your PCB footprint requirements. Ensure the operating temperature range of -40°C to +85°C aligns with your environmental specifications. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.

Selection Notes

Select this component when a dual-channel RS-232 transceiver is required for space-constrained designs. It is suitable for systems powered by 3.3 V or 5 V rails. Consider the 250 kbps data rate limit; higher speeds may require alternative models like the MAX3243. Verify that the SOIC-16 package is compatible with your assembly process and thermal management strategy.

Part Context

This part belongs to the MAX3232 family of multichannel RS-232 transceivers. The 'C' designation typically denotes commercial temperature range performance, while 'DWR' specifies the SOIC-16 tape-and-reel packaging. The 'G4' suffix confirms green/RoHS-compliant manufacturing. It serves as a direct replacement for older RS-232 interface solutions in legacy system upgrades.

Replacement Considerations

The TRS3232IDWRG4 is a verified equivalent offering identical functionality and pinout. Other compatible alternatives include the SN75C3232 and MAX3232IDWR. Ensure substitute parts maintain the same 3 V to 5.5 V operating voltage and SOIC-16 package form factor.