MAX3223EIDWR

Overview

The MAX3223EIDWR is a dual-channel RS-232 transceiver manufactured by Texas Instruments, designed for serial communication in portable and battery-powered applications. It operates from a single 3-V to 5.5-V supply and integrates charge pumps to generate the required ±5-V signals from the single supply voltage. The device features two drivers and two receivers, supporting data rates up to 500 kbit/s. It includes shutdown mode to minimize power consumption during idle periods. The component provides ±15-kV electrostatic discharge (ESD) protection on all RS-232 bus pins, ensuring robustness against electrical stress. It is housed in a 20-pin SSOP package.

Feature Summary

• Integrated charge pump eliminates the need for external positive and negative voltage supplies
• High ESD protection rating of ±15 kV on RS-232 bus pins ensures reliable operation in harsh environments
• Shutdown feature significantly reduces current consumption for battery-powered systems
• Compliant with TIA/EIA-232-F and ITU V.28 standards for full duplex communication

Applications

• Portable computers and handheld devices requiring low-power serial communication
• Industrial control systems needing robust RS-232 interfaces with ESD protection
• Battery-operated equipment where power efficiency is critical

Procurement Notes

Verify the specific suffix 'IDWR' corresponds to the tape-and-reel packaging variant when sourcing. Confirm that the operating temperature range meets the application requirements, as industrial grades typically span -40°C to +85°C. Ensure compatibility with the target PCB footprint for the 20-pin SSOP package. Cross-reference the manufacturer's latest datasheet for any pinout or electrical specification updates before finalizing procurement.

Selection Notes

Select this component when a dual-channel RS-232 interface is required with integrated charge pumps to simplify design. It is suitable for applications demanding high ESD immunity without external protection components. Consider the 500 kbit/s data rate limit when designing for higher-speed serial links. Evaluate the shutdown functionality if power management is a priority for the end product.

Part Context

This part belongs to the MAX3223E family of multichannel RS-232 line drivers and receivers. The 'E' suffix indicates enhanced ESD protection compared to earlier versions. The 'IDW' denotes the industrial temperature range and SSOP package, while 'R' specifies reel packaging. It serves as a direct replacement for older MAX3223 variants in designs requiring improved reliability and lower power consumption.

Replacement Considerations

MAX3223EIDBR is a compatible alternative in SSOP-20 packaging. MAX3223EIPWR offers the same functionality in a TSSOP-20 package. ICL3225EIAZ is a similar RS-232 transceiver from Renesas. Verify pin-to-pin compatibility and electrical specifications before substituting.