MAX3080ESD+T

Overview

The MAX3080ESD+T is a high-speed RS-485/RS-422 transceiver featuring one driver and one receiver. It operates on a single +5V supply (4.75V to 5.25V) with a typical quiescent current of 375µA. The device supports full-duplex communication at data rates up to 115kbps, utilizing slew-rate limiting to minimize EMI. It incorporates fail-safe circuitry that guarantees a logic-high receiver output when inputs are open or shorted. The component is housed in a 14-pin SOIC package and functions within an operating temperature range of -40°C to +85°C.

Feature Summary

• Fail-safe circuitry ensures a logic-high receiver output during input open or short conditions.
• Slew-rate-limited drivers reduce electromagnetic interference and signal reflections.
• High input impedance allows connection of up to 256 transceivers on a single bus.

Applications

• RS-422 and RS-485 communications
• Level translators
• Transceivers for EMI-sensitive applications
• Industrial-control local area networks

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and temperature rating. Confirm RoHS compliance status through manufacturer declarations. Ensure the reel quantity matches production requirements. Validate pinout compatibility if replacing legacy components like the 75180.

Selection Notes

Select this model for full-duplex applications requiring error-free transmission up to 115kbps. The integrated slew-rate limiting makes it suitable for environments sensitive to electromagnetic interference. Verify that the system power supply remains within the specified 4.75V to 5.25V range for optimal performance.

Part Context

This component belongs to the MAX3080–MAX3089 family of high-speed transceivers designed for RS-485/RS-422 standards. The MAX3080 variant specifically provides full-duplex operation with fixed 115kbps slew-rate limiting. It serves as a robust interface solution for industrial control networks and general-purpose serial communication systems.

Replacement Considerations

The datasheet notes pin-compatible alternatives such as the 75180. When substituting, verify that the replacement part supports the required full-duplex mode and 115kbps data rate specifications.

FAQ

How does the fail-safe feature function?

The device guarantees a logic-high receiver output when the receiver inputs are open, shorted, or connected to a terminated line with all drivers disabled.

What is the maximum number of transceivers supported on the bus?

Due to the 1/8-unit-load receiver input impedance, up to 256 transceivers can be connected in parallel on one communication line.

Does this device support half-duplex communication?

No, the MAX3080 is intended specifically for full-duplex communications.