MAX3223EIDB

Overview

The MAX3223EIDB is a dual-channel RS-232 line driver and receiver manufactured by Texas Instruments. It operates from a single 3-V to 5.5-V supply and features ±15-kV electrostatic discharge (ESD) protection on both the transmitter inputs and receiver outputs, compliant with IEC 61000-4-2 standards. The device supports data rates up to 500 kbps and includes a shutdown mode for low power consumption. It is housed in a 20-pin SSOP package and is rated for operation over an extended temperature range of -40°C to +85°C.

Feature Summary

• Integrated ±15-kV ESD protection on all RS-232 signal pins
• Single-supply operation compatible with 3-V and 5-V systems
• Shutdown capability reduces standby current significantly

Applications

• Industrial control systems requiring robust serial communication
• Portable battery-powered equipment needing low-power interface solutions
• Data acquisition systems with exposed connector environments

Procurement Notes

Verify the specific suffix against the manufacturer's latest documentation to confirm pinout compatibility and electrical specifications. Ensure the procurement source provides valid traceability for RoHS compliance. Cross-reference the component marking with official datasheet images to prevent counterfeit substitution during assembly planning.

Selection Notes

Select this component when high ESD immunity is critical for serial interfaces in harsh environments. Compare the 500 kbps speed against higher-speed alternatives if bandwidth requirements exceed this limit. Verify that the 20-SSOP footprint matches the target PCB layout constraints and thermal management requirements for the specific application enclosure.

Part Context

This part belongs to the MAX3223 family of multichannel RS-232 transceivers designed for reliable communication in noisy industrial settings. It serves as a bridge between microprocessor logic levels and RS-232 voltage standards. The device integrates charge pumps to generate the necessary positive and negative voltages from a single supply, eliminating the need for external dual-voltage sources.

Replacement Considerations

MAX3223EIDBR is a tape-and-reel variant of the same functional device. TRS3223EIDB offers equivalent performance with updated branding. Check pin-to-pin compatibility before substituting with other RS-232 transceivers.