MAX232ECDWRG4

Overview

The MAX232ECDWRG4 is a dual RS-232 driver and receiver manufactured by Texas Instruments, designed for EIA/TIA-232-F and V.28/V.24 standards. It operates on a single 5-V supply with an internal charge pump to generate required voltages. The device features a data rate of 120 kb/s, full-duplex communication, and two drivers plus two receivers. It functions within a temperature range of -40°C to +85°C and is housed in a 16-pin SOIC package.

Feature Summary

• Integrated charge pump eliminates external capacitor requirements for voltage generation
• Provides IEC 61000-4-2 electrostatic discharge protection up to 15 kV (contact) and 30 kV (air)
• Compatible with standard TTL or CMOS logic input levels

Applications

• Industrial control systems requiring robust serial communication
• Portable battery-powered devices due to low power consumption
• Modem interfaces and point-of-sale terminals

Procurement Notes

Verify the specific suffix 'E' indicates industrial temperature range and 'CDW' denotes the SOIC-16 tape-and-reel packaging. Confirm RoHS compliance status as the 'G4' suffix typically signifies lead-free and rohs compliant materials per Texas Instruments specifications. Ensure the component matches the exact pinout and electrical characteristics defined in the official datasheet before integration.

Selection Notes

Select this component when designing systems that require reliable RS-232 communication in environments with potential electrostatic interference. The integrated ESD protection reduces the need for additional protective circuitry. Consider the 120 kb/s speed limit against higher-speed alternatives if data throughput requirements exceed this threshold.

Part Context

This part belongs to the MAX232E family, which enhances the original MAX232 with improved ESD protection capabilities. The 'E' suffix distinguishes it from commercial grade variants by offering extended temperature operation. It serves as a direct upgrade for legacy designs needing better noise immunity without changing the external component count significantly.

Replacement Considerations

MAX232EIDWRG4: Pin-compatible alternative with similar electrical characteristics but potentially different packaging width or minor parameter variations. Verify thermal performance and exact voltage tolerances before substitution.