MAX3222CDWR

Overview

The MAX3222CDWR is a dual-channel RS-232 transceiver manufactured by Texas Instruments, designed for data communication on personal computers and modems. It operates from a single 3-V to 5.5-V supply and includes two drivers and two receivers. The device features ±15-kV ESD protection on RS-232 inputs and outputs per IEC 61000-4-2. It utilizes small external charge pumps requiring only four 0.1-uF capacitors. The component supports full-duplex operation with a data rate of 120 kbps and functions within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrated charge pump circuitry minimizes external component count by requiring only four small capacitors.
• Provides robust electrostatic discharge protection meeting IEC 61000-4-2 standards for both input and output pins.
• Enables reliable full-duplex communication over standard RS-232 lines using a single power supply voltage.

Applications

• Personal computer serial port interfaces
• Modem connections
• Portable instrumentation equipment

Procurement Notes

Verify the specific suffix 'CDWR' corresponds to the commercial temperature grade (-40°C to +85°C) and tape-and-reel packaging format. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring dual independent RS-232 channels with low standby current capabilities. Ensure the application environment remains within the specified commercial temperature limits and that the available board space accommodates the required four external capacitors for the internal charge pump operation.

Part Context

This part belongs to the MAX3222 family of multichannel RS-232 line drivers and receivers. It shares functional similarities with the MAX3232 but offers distinct pinout and performance characteristics tailored for specific interface requirements within the broader Texas Instruments interface IC portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify compatibility with alternative devices such as the SN75C3222DWR based on specific electrical parameter matching and pin configuration requirements.