MAX3232CDWG4

Overview

The MAX3232CDWG4 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 an internal charge pump to generate the required 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 is housed in a 16-pin SOIC-Wide (DW) package with a wide body. The component is rated for an industrial temperature range of -40°C to +85°C and includes ±15 kV electrostatic discharge (ESD) protection on all RS-232 lines.

Feature Summary

• Integrated charge pump circuit enables operation from a single low-voltage power source.
• Provides robust ±15 kV ESD protection on transmit, receive, and ground pins.
• Complies with TIA/EIA-232-F interface standards for reliable serial communication.
• Offers full-duplex data transmission with independent driver and receiver channels.

Applications

• Industrial control systems requiring serial communication interfaces
• Portable battery-powered instruments and equipment
• Modem and communications equipment connections
• Computer peripheral interfacing

Procurement Notes

Verify the specific suffix 'G4' indicates lead-free and RoHS compliance status as per Texas Instruments documentation. Confirm the 'C' designation corresponds to the commercial-to-industrial temperature grade (-40°C to +85°C). Ensure the DW package variant matches the required PCB footprint dimensions for the wide SOIC-16 form factor before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel RS-232 transceiver is needed for space-constrained designs using surface-mount technology. The wide-body SOIC package facilitates easier manual soldering compared to smaller footprints. Consider the 250 kbps speed limit and 1 mA typical supply current when evaluating power budgets for portable applications requiring long cable runs or noisy environments.

Part Context

This part belongs to the MAX3232 family of multichannel RS-232 transceivers designed for low-power, single-supply applications. The MAX3232 series is widely used as a drop-in replacement for older RS-232 drivers due to its compatibility with standard timing requirements. The 'G4' suffix typically denotes environmental compliance, while 'CD' specifies the package type and temperature range within the broader product line.

Replacement Considerations

The SN75C3232 is a pin-compatible alternative offering similar functionality. Other compatible devices include the MAX3232IDW and MAX3232EIDW, which share the same package but may differ in temperature ratings or ESD protection levels. Verify electrical specifications against the original design requirements before substituting.