MAX3223MDBREP

Overview

The MAX3223MDBREP 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 for full-duplex communication with a data rate of 250 kbps. It utilizes a 20-pin SSOP package (0.209 inch width) and supports surface-mount installation. Key electrical specifications include an output current of 35 mA, a propagation delay of 150 ns, and an operating power current of 1 mA. The component functions reliably across an extended temperature range from -55°C to +125°C and includes ±15 kV electrostatic discharge protection on all ports.

Feature Summary

• Integrated ±15-kV electrostatic discharge protection on transceiver inputs and outputs
• Extended industrial and automotive temperature range capability up to +125°C
• Single-supply operation compatible with 3-V and 5-V logic families
• AutoShutdown feature reduces power consumption during idle periods

Applications

• Industrial control systems requiring robust serial communication in high-noise environments
• Automotive embedded systems operating under extended thermal conditions
• Portable battery-powered devices utilizing low standby current modes
• Medical equipment interfaces demanding high reliability and ESD resilience

Procurement Notes

Verify the specific suffix MDBREP against the official Texas Instruments datasheet to confirm the exact package dimensions and tape-and-reel specifications. Ensure that the procurement channel provides traceability documentation consistent with the manufacturer's quality standards. Cross-reference the RoHS compliance status and material declarations with the latest product change notices issued by Texas Instruments prior to finalizing orders.

Selection Notes

Select this component when application requirements demand operation beyond standard commercial temperature limits, specifically up to +125°C. The 250 kbps data rate suits moderate-speed serial links where power efficiency is critical due to the 1 mA typical supply current. Compare pinout compatibility with existing PCB layouts, as the 20-SSOP package differs from smaller alternatives like the TSSOP variant. Confirm that the external capacitor values align with the chosen supply voltage to maintain signal integrity at the specified baud rate.

Part Context

This part belongs to the MAX3223 family of multichannel RS-232 transceivers designed for reliable serial communication. The 'E' designation typically indicates an extended temperature grade, while the 'M' prefix often denotes military or enhanced reliability specifications in certain TI lineages. The 'DBR' suffix identifies the specific 20-SSOP reel packaging format. This component serves as a bridge between microcontroller UARTs and RS-232 connectors, providing necessary voltage level translation and signal conditioning.

Replacement Considerations

MAX3223IDBRG4: Offers similar functionality but operates within a -40°C to +85°C range rather than the extended -55°C to +125°C range of the MDBREP variant.