MAX3223EIDW

Overview

The MAX3223EIDW is a dual-channel RS-232 transceiver manufactured by Texas Instruments, designed for full-duplex data communication. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 500 kbit/s. The device integrates two drivers and two receivers in a single package. Key electrical specifications include a typical standby current of 1 μA and an output drive capability of 35 mA. It features ±15-kV electrostatic discharge (ESD) protection on the bus pins, ensuring robustness against human-body model discharges. The component is housed in a 20-pin SSOP package with a width of 5.30 mm.

Feature Summary

• Integrated ±15-kV ESD protection on RS-232 bus pins for enhanced reliability
• Low standby current consumption of 1 μA typ for power efficiency
• Compatible with 5-V logic inputs while operating from a 3.3-V supply
• Requires only four external 0.1-μF capacitors for operation

Applications

• Industrial control systems requiring reliable serial communication
• Portable battery-powered equipment utilizing 3-V or 5-V supplies
• Modems and portable instruments needing RS-232 connectivity
• Communication ports in embedded systems subject to ESD events

Procurement Notes

Verify the specific suffix IDW confirms the SSOP-20 package and industrial temperature grade (-40°C to +85°C). Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure ordering quantities align with standard factory packaging configurations to avoid non-standard handling requirements during assembly.

Selection Notes

Select this component when full-duplex RS-232 communication is required with high ESD tolerance. It is suitable for designs needing low standby current and compatibility with both 3.3-V and 5-V logic levels. Compare pinout and capacitor requirements against alternative transceivers if space constraints exist. Verify that the 500 kbit/s speed meets the system's baud rate requirements.

Part Context

This part belongs to the MAX3223E family of multichannel RS-232 line drivers and receivers. The family shares core functionality but varies in package type and temperature rating. The IDW suffix specifically denotes the shrink small-outline package variant. Other variants in the series may offer different pin counts or extended temperature ranges for specialized applications.

Replacement Considerations

The MAX3223EIDBR is a pin-compatible alternative in a reel package format. The MAX3223EIPW offers the same functionality in a TSSOP-20 package. Verify electrical parameters and physical dimensions before substituting to ensure board layout compatibility.