MAX3245EEUI+

Overview

The MAX3245EEUI+ is a true RS-232 transceiver manufactured by Analog Devices Inc./Maxim Integrated, housed in a 28-pin TSSOP package. It operates on a single +3.0V to +5.5V supply and features three drivers and five receivers for full-duplex communication. The device guarantees a data rate of 1Mbps using MegaBaud technology and incorporates AutoShutdown Plus to achieve a typical supply current of 1μA during inactivity. It provides enhanced ESD protection rated at ±15kV (Air-Gap), ±8kV (Contact), and ±15kV (Human Body Model). The operating temperature range extends from -40°C to +85°C.

Feature Summary

• AutoShutdown Plus functionality automatically reduces power consumption when the interface is idle or disconnected.
• Integrated dual charge pump generates internal voltage rails without requiring external transformers.
• High electrostatic discharge tolerance protects I/O pins against severe static events.
• Dedicated R2OUTB output allows continuous monitoring of receiver activity even when other outputs are disabled.

Applications

• Notebook, subnotebook, and palmtop computers
• Cellular phones and battery-powered equipment
• Hand-held devices and peripherals
• Printers and automotive systems

Procurement Notes

Verify the specific suffix EEUI+ corresponds to the required industrial temperature range (-40°C to +85°C) and TSSOP-28 package configuration. Confirm RoHS compliance status via official documentation before procurement. Ensure the ordering part number matches the exact pinout and electrical specifications required for the target design.

Selection Notes

Select this component for applications requiring high-speed 1Mbps RS-232 communication with strict power constraints. The inclusion of five receivers and three drivers supports complex peripheral interfacing. Verify that the system can accommodate the four small capacitors required for the internal charge pump operation within the available board space.

Part Context

This device belongs to the MAX3245E family of low-power RS-232 transceivers. It shares core architectural features with the MAX3224E through MAX3227E series but offers a higher channel count. The EE suffix specifically denotes the extended industrial temperature rating compared to the EC commercial grade variants.

Replacement Considerations

MAX3245ECAI+