MAX3222IDWG4

Overview

The MAX3222IDWG4 is a multichannel RS-232 line driver and receiver manufactured by Texas Instruments. It operates within a supply voltage range of 3 V to 5.5 V, supporting both 3.3 V and 5 V logic systems. The device features two drivers and two receivers, enabling full-duplex communication at data rates up to 500 kb/s. It is housed in a 20-pin SOIC package with surface-mount installation. Key electrical specifications include a maximum operating current of 1 mA and an ESD protection rating of 15 kV. The component functions reliably across an extended temperature range from -40°C to +85°C.

Feature Summary

• Integrated shutdown mode for power conservation
• High electrostatic discharge protection on all pins
• Single capacitor design for charge pump circuitry
• Compliance with EIA/TIA-232-F standards

Applications

• Industrial control systems requiring serial communication
• Portable battery-powered instrumentation
• Modem and communications equipment interfaces
• Point-of-sale terminals and barcode scanners

Procurement Notes

Verify the exact suffix IDWG4 to confirm the SOIC-20 package and industrial temperature grade. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates before procurement. Ensure the source provides valid traceability for this specific part number to avoid counterfeit components.

Selection Notes

Select this component when dual-channel RS-232 communication is required with low power consumption constraints. It serves as a suitable replacement for legacy single-supply transceivers. Verify that the application environment stays within the specified -40°C to +85°C operational limits. Ensure PCB layout accommodates the required external capacitors for the internal charge pumps.

Part Context

This part belongs to the MAX3222E family of multichannel RS-232 transceivers. It shares functional similarities with other Texas Instruments RS-232 interface ICs but is distinct due to its specific pinout and dual-driver configuration. The IDWG4 designation indicates the industrial temperature range and wide-body SOIC packaging format.

Replacement Considerations

The TRS3222IDWG4 is a verified equivalent part number offering identical functionality and pin compatibility. Both devices share the same electrical characteristics and package dimensions, allowing for direct substitution in existing designs without schematic modifications.