MAX3232CDW

Overview

The MAX3232CDW is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It integrates two drivers, two receivers, and dual charge pumps to enable operation from a single 3V to 5.5V power supply using four external 0.1µF capacitors. The device supports data signaling rates up to 250kbps with a maximum output slew rate of 30V/µs. It provides ±15kV ESD protection on all RS-232 lines, including ground. The component operates within a temperature range of -40°C to +85°C and is housed in a 16-pin SOIC package.

Feature Summary

• Integrates dual charge pumps for single-supply operation without requiring external inductors or transformers.
• Provides robust ±15kV electrostatic discharge protection across all RS-232 signal pins and ground.
• Ensures compatibility with standard TTL and CMOS logic levels while meeting TIA/EIA-232-F interface requirements.

Applications

• Connecting asynchronous communication controllers to serial port connectors in industrial equipment.
• Implementing RS-232 interfaces in portable battery-powered instruments and handheld devices.
• Facilitating data exchange between microprocessors and peripheral devices such as modems or printers.

Procurement Notes

Verify the specific suffix 'DW' corresponds to the SOIC-16 package and industrial temperature grade (-40°C to +85°C) when sourcing. Confirm that the component meets RoHS directives if required for the target assembly process. Ensure the supplier provides valid traceability documentation for the Texas Instruments manufacturing lot to guarantee authenticity and quality control standards.

Selection Notes

Select this variant over commercial grade parts when the application environment requires extended temperature stability beyond 70°C. The SOIC-16 package offers a balance between pin count and board space for general-purpose serial communication needs. Consider the MAX3232IDR or MAX3232IDW if alternative surface-mount footprints are preferred for the same electrical specifications.

Part Context

The MAX3232 series represents a family of low-power RS-232 transceivers designed for mobile and battery-operated systems. The CDW suffix specifically denotes the industrial temperature range and SOIC packaging format within the broader MAX3232 product line. This component serves as a direct replacement for older discrete RS-232 interface solutions, simplifying circuit design by integrating voltage conversion internally.

Replacement Considerations

The SN65C3232 and SN75C3232 are confirmed high-speed terminal-compatible replacements offering 1Mbps data rates. For identical performance in standard applications, the MAX3232IDWR and MAX3232CDR serve as functional equivalents with different packaging options.