MAX3311EEUB+

Overview

The MAX3311EEUB+T is a low-power, single RS-232-compatible transceiver manufactured by Analog Devices Inc. (Maxim Integrated). It operates from a +5V supply and supports data rates up to 460kbps with ±3.7V output voltage swings. The device integrates a single inverting charge pump requiring only three 0.1µF capacitors. It features ±15kV ESD protection on I/O pins per the Human Body Model and includes a 1µA shutdown mode that disables the transmitter while keeping the receiver active.

Feature Summary

• Integrated ±15kV ESD protection on all RS-232 compatible input and output pins for robust handling during assembly and operation.
• Single charge-pump architecture generates negative voltage from a single +5V supply using minimal external components.
• Ultra-low power consumption achieved through a 1µA shutdown mode that turns off the charge pump and disables the transmitter.

Applications

• Portable digital cameras
• Personal Digital Assistants (PDAs)
• Global Positioning Systems (GPS)
• Point of Sale (POS) terminals
• Telecommunications equipment

Procurement Notes

Verify the ordering suffix EEUB corresponds to the -40°C to +85°C extended temperature range and the 10-pin µMAX package. Confirm the '+' suffix indicates lead-free compliance and RoHS adherence as specified in the manufacturer's documentation. Ensure the component source matches the official Analog Devices or Maxim Integrated distribution channels to guarantee authenticity.

Selection Notes

Select this component when designing systems requiring RS-232 communication at data rates up to 460kbps with strict power constraints. The MAX3311E is suitable for applications needing continuous receiver monitoring during system sleep states due to its active receiver in shutdown mode. Consider the MAX3313E variant if an INVALID signal output is required to detect cable presence.

Part Context

This part belongs to the MAX3311E/MAX3313E family of low-power RS-232 transceivers. It shares architectural similarities with the MAX3316–MAX3319 series but is optimized specifically for +5V operation. The EEUB suffix denotes the industrial temperature grade (-40°C to +85°C), distinguishing it from the ECUB commercial grade (0°C to +70°C).

Replacement Considerations

Public confirmed substitutes include the MAX3311ECUB for commercial temperature applications and the MAX3313EEUB for designs requiring an INVALID output pin. Verify pin compatibility and capacitor requirements when transitioning between these variants.