MAX3222CDWG4

Overview

The MAX3222CDWG4 is a Texas Instruments RS-232 interface integrated circuit designed for multichannel communication. It features two drivers and two receivers, supporting full-duplex data transmission at speeds up to 500 kb/s. The device operates within a supply voltage range of 3 V to 5.5 V, with typical operation at 3.3 V or 5 V. It includes an integrated shutdown mode to reduce power consumption, drawing only 1 mA in active mode. The component provides 15 kV electrostatic discharge (ESD) protection on all lines. It is housed in a 20-pin SOIC-Wide package and functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates dual drivers and receivers for independent bidirectional serial communication channels.
• Incorporates internal charge pump circuitry to generate required RS-232 voltage levels without external transformers.
• Features dedicated shutdown pin to minimize current consumption during idle periods.
• Provides robust 15 kV ESD protection on input and output pins to safeguard against static discharge events.

Applications

• Industrial control systems requiring reliable serial communication interfaces.
• Medical equipment needing isolated and protected data links.
• Portable battery-powered devices utilizing low-power RS-232 connectivity.
• Computer peripherals and modems interfacing with host processors.

Procurement Notes

Verify the specific suffix 'CDWG4' to confirm the commercial temperature grade (-40°C to +85°C) and tube packaging format. Ensure compatibility with existing PCB footprints for the 20-pin SOIC-Wide package. Confirm RoHS compliance status through official manufacturer documentation before integration into regulated assemblies.

Selection Notes

Select this component when dual-channel RS-232 communication is required with low standby power consumption. Compare against the MAX3232 series if shutdown functionality is not needed, as the MAX3222 offers superior power management. Verify that the 500 kb/s data rate meets system timing requirements and that the SOIC-Wide package fits the available board space constraints.

Part Context

This part belongs to the MAX3222E family of multichannel RS-232 line drivers and receivers. It shares architectural similarities with the MAX3232 but adds a shutdown feature for enhanced power efficiency. The 'C' designation indicates the commercial temperature range variant, distinguishing it from industrial or extended temperature options within the same product line.

Replacement Considerations

Direct functional substitutes include the MAX3222IDW for industrial temperature ranges or the TRS3222EIDWG4 for pin-compatible alternatives. Verify package dimensions and electrical specifications carefully when cross-referencing with other manufacturers' RS-232 transceivers.