MAX3088EESA+T

Overview

The MAX3088EESA+T is a half-duplex RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +5V supply (4.75V to 5.25V) and supports data rates up to 10Mbps with unrestricted driver slew rates. The device features ±15kV ESD protection on all I/O pins, fail-safe receiver circuitry that guarantees a logic-high output when inputs are open or shorted, and low quiescent current of 600µA. It is housed in an 8-pin SOIC package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• Fail-safe receiver circuitry ensures a logic-high output state when differential inputs are open or shorted.
• Enhanced electrostatic discharge protection rated at ±15kV for all RS-485 input/output pins.
• Unrestricted driver slew rate capability enables high-speed data transmission up to 10Mbps.
• Low-power shutdown mode significantly reduces supply current consumption during idle periods.

Applications

• RS-422 and RS-485 communication networks
• Industrial control local area networks
• EMI-sensitive applications requiring error-free data transmission

Procurement Notes

Verify the specific ordering suffix against official manufacturer documentation to confirm package type and temperature rating. Confirm RoHS compliance status through authorized distributors. Ensure the component matches the exact part number to avoid functional discrepancies related to duplex mode or slew-rate limitations.

Selection Notes

Select this component for designs requiring high-speed half-duplex communication without slew-rate limiting. Verify compatibility with standard 5V logic levels and ensure the application benefits from the integrated fail-safe feature. Consider thermal dissipation limits if operating near maximum ambient temperatures.

Part Context

This device belongs to the MAX3080E–MAX3089E family of high-speed transceivers. It shares pinout compatibility with industry-standard parts like the 75180 but includes enhanced ESD protection and fail-safe features. The 'E' suffix indicates an extended industrial temperature range, while 'ES' denotes the SOIC package.

Replacement Considerations

Pin-compatible alternatives include the MAX3086E and MAX3087E, though these are full-duplex devices. Direct replacements must match the half-duplex configuration and 10Mbps slew-rate specifications found in the MAX3088E datasheet.

FAQ

What is the fail-safe threshold voltage for the receiver?

The receiver guarantees a logic-high output when the differential input voltage (A-B) is greater than or equal to -50mV, and a logic-low output when it is less than or equal to -200mV.

How does the MAX3088E handle open or shorted receiver inputs?

The built-in fail-safe circuitry forces the receiver output to a logic-high state if the inputs are left open or shorted, ensuring a known state even when no transmitter is active.

Is the driver slew rate limited in this device?

No, the MAX3088E has unrestricted driver slew rates, allowing for maximum data transmission speeds up to 10Mbps.