MAX3222CDBR

Overview

The MAX3222CDBR is a dual-channel RS-232 transceiver manufactured by Texas Instruments, designed for serial communication interfaces. It integrates two drivers and two receivers within a single package, supporting full-duplex data transmission at rates up to 250 kbps. The device operates from a single power supply ranging from 3 V to 5.5 V, utilizing internal charge pumps to generate the necessary voltages for RS-232 signaling without external inductors. It is housed in a 20-pin SSOP surface-mount package and functions reliably across an industrial temperature range of 0°C to +70°C.

Feature Summary

• Integrates dual drivers and dual receivers for complete RS-232 communication functionality
• Operates on a single 3V to 5.5V power supply with integrated charge pump circuitry
• Provides robust electrostatic discharge protection rated at ±15kV on all RS-232 lines

Applications

• Industrial control systems requiring reliable serial data exchange
• Portable equipment and battery-powered devices due to low power consumption
• Modems and fax machines utilizing standard RS-232 protocols

Procurement Notes

Verify the specific suffix 'CDBR' corresponds to the commercial temperature grade and tape-and-reel packaging format required for your assembly line. Confirm that the 20-SSOP footprint matches your PCB design guidelines. Ensure compliance with RoHS directives if applicable to your manufacturing standards before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel RS-232 interface is needed with minimal external capacitor requirements. It is suitable for applications operating between 3V and 5.5V where space constraints favor a compact SSOP package over larger DIP options. Consider alternative pin counts if more than two channels are required for your system architecture.

Part Context

This part belongs to the MAX32xx family of multichannel RS-232 line drivers and receivers. These components are widely used in embedded systems to bridge microcontrollers or DSPs with standard serial ports. The MAX3222 specifically offers a balanced solution for dual-channel needs, distinguishing itself from single-channel or quad-channel variants in the same series.

Replacement Considerations

The MAX3222EIDBR is listed as a manufacturer-recommended alternative. Verify compatibility regarding temperature range and package dimensions before substitution.