MAX232ECDWRE4

Overview

The MAX232ECDWRE4 is a dual EIA-232 driver and receiver manufactured by Texas Instruments. It operates from a single 4.5V to 5.5V power supply and includes on-chip charge pumps for RS-232 voltage level translation. The device features two drivers and two receivers, supporting full-duplex communication with a data rate of up to 120Kbps. It is housed in a 16-pin SOIC package (DW) with an extended industrial temperature range of -40°C to 85°C. The RE4 suffix indicates a tape-and-reel packaging format compliant with specific environmental standards.

Feature Summary

• Integrates dual drivers and dual receivers for complete EIA-232 signal conditioning
• Utilizes internal charge pump circuitry to generate required RS-232 voltage levels from a single 5V supply
• Designed for robust operation within extended industrial temperature ranges
• Provides Schmitt trigger inputs on receivers to filter noise and ensure clean signal transitions

Applications

• Industrial control systems requiring serial communication interfaces
• Modem interfacing in embedded devices
• Point-of-sale terminals and barcode scanners
• Computer peripheral connections using RS-232 protocols

Procurement Notes

Verify the exact ordering part number against manufacturer documentation to confirm the RE4 suffix denotes tape-and-reel packaging. Confirm RoHS compliance status and lead times directly with authorized distributors or Texas Instruments. Ensure the extended temperature grade matches system requirements before procurement.

Selection Notes

Select this component when a dual-channel RS-232 transceiver is needed with extended temperature capability. Compare pin compatibility with legacy MAX232 designs if replacing existing circuits. Verify that the 120Kbps speed meets application needs and that the 16-pin SOIC footprint fits the PCB layout constraints.

Part Context

This part belongs to the MAX232 family of dual drivers/receivers originally developed by Maxim Integrated and now produced by Texas Instruments. It serves as a standard interface solution for converting TTL/CMOS logic levels to RS-232 voltages. The ECDW variant specifically denotes the extended temperature range and SOIC package type within this lineage.

Replacement Considerations

Direct pin-compatible alternatives include the MAX232IDWRE4 (commercial temperature grade) and the ADM232L from Analog Devices. Verify electrical specifications such as drive current and operating voltage range before substitution. Ensure thermal performance meets system requirements if moving between commercial and extended grades.