MAX232EIDWG4

Overview

The MAX232EIDWG4 is a dual driver and receiver RS-232 transceiver manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V, with a typical operating voltage of 5 V. The device supports full-duplex communication at data rates up to 250 kb/s. It features two drivers and two receivers, housed in a 16-pin SOIC package. The component functions reliably across an extended industrial temperature range from -40°C to +85°C. Key electrical specifications include a propagation delay of 0.5 µs, an operating supply current of 10 mA, and ESD protection rated at 15 kV.

Feature Summary

• Integrates dual line drivers and receivers for complete RS-232 signal conversion without external logic gates.
• Includes internal charge pump circuitry to generate required positive and negative supply voltages from a single 5-V source.
• Provides robust electrostatic discharge protection rated at 15 kV to safeguard against static events.

Applications

• Connecting microcontrollers or DSPs to PC serial ports via RS-232 standards.
• Industrial control systems requiring reliable half-duplex or full-duplex serial communication.
• Embedded systems interfacing with modems or other RS-232 compliant peripherals.

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free and RoHS compliance status as per Texas Instruments documentation. Confirm the package variant matches the SOIC-16 physical dimensions required for your PCB footprint. Check for End-of-Life (EOL) notifications, as availability may be restricted compared to active production parts. Ensure the ordering quantity aligns with tube packaging constraints if applicable.

Selection Notes

Select this component when a 5-V supply is available and RS-232 compatibility is mandatory. Compare against the MAX3232 series if operation from a 3-V supply is required, as pinouts may differ. Verify that the 250 kb/s data rate meets the system's throughput requirements. Consider the SOIC-16 package size relative to board space limitations compared to smaller alternatives like the MAX232AIEPE.

Part Context

This part belongs to the MAX232E family of dual RS-232 transceivers. It serves as a standard interface solution for legacy serial communication protocols. The 'E' designation typically denotes an extended temperature range variant. The 'WG4' suffix identifies the specific tape-and-reel or tube packaging and manufacturing lot details defined by Texas Instruments.

Replacement Considerations

The MAX232DRG4 is a direct functional substitute with identical electrical characteristics but differs in packaging format (tape and reel vs. tube). The MAX232EIDR offers the same performance in a tape-and-reel configuration. Verify pin compatibility before substitution.