MAX3089ECSD+T

Overview

The MAX3089ECSD+T is a high-speed RS-485/RS-422 transceiver featuring ±15kV ESD protection and fail-safe circuitry. It operates on a single +5V supply with a typical quiescent current of 375µA. The device supports selectable data rates up to 10Mbps via the SRL pin, configurable duplex modes (half/full) via the H/F pin, and independent phase inversion for driver and receiver outputs using TXP and RXP pins. It accommodates up to 256 units on the bus and is housed in a 14-pin SOIC package.

Feature Summary

• Configurable slew-rate limiting allows selection between 115kbps, 500kbps, and 10Mbps transmission speeds.
• Pin-selectable operation enables switching between half-duplex and full-duplex communication modes.
• Independent transmitter and receiver phase control corrects for twisted-pair wiring reversals.
• Enhanced ESD protection safeguards I/O pins against ±15kV human body model discharges.

Applications

• RS-422 and RS-485 serial communications
• Industrial-control local area networks
• Level translators in noisy environments

Procurement Notes

Verify the specific suffix 'CSD' indicates the commercial temperature range (0°C to +70°C) and the 'T' denotes tape-and-reel packaging. Confirm RoHS compliance status through official manufacturer documentation before finalizing procurement specifications.

Selection Notes

Select this component when flexible configuration of data rate, duplex mode, and signal polarity is required within a single package. Ensure the application environment remains within the commercial temperature limits and that the system utilizes a standard +5V power supply.

Part Context

This part belongs to the MAX3080E–MAX3089E family of high-speed transceivers. While sharing core interface capabilities with siblings like the MAX3086E, it uniquely offers programmable operational parameters including selectable data rates and duplex modes without requiring external hardware changes.

Replacement Considerations

Direct pin-compatible replacements include other members of the MAX3080E–MAX3089E series such as the MAX3086E or MAX3088E, provided their fixed data rates and duplex configurations align with the design requirements.

FAQ

How is the data rate configured on the MAX3089E?

The data rate is set by the state of the SRL pin: leave unconnected for 115kbps, connect to VCC for 500kbps, or connect to GND for 10Mbps.

Can the MAX3089E operate in both half-duplex and full-duplex modes?

Yes, the H/F pin selects the mode; connecting it to GND enables full-duplex, while driving it high enables half-duplex.

What is the function of the TXP and RXP pins?

These pins allow independent inversion of the transmitter and receiver output phases to correct for reversed twisted-pair connections.