MXL1535ECWI+T

Drivers, Receivers, Transceivers Overview

The MXL1535ECWI+T is a full-duplex isolated RS-485/RS-422 transceiver providing 2500VRMS galvanic isolation via integrated high-voltage capacitors. It supports data rates up to 1000kbps and operates with a logic-side supply voltage range of +4.5V to +5.5V, while the isolated side accepts +4.5V to +7.5V. The device includes one differential driver and one receiver with 1/8 unit load capability, allowing up to 256 devices on the bus. It features ±15kV ESD protection, pin-selectable slew-rate limiting for EMI reduction, hot-swap protection, and isolation-barrier fault detection.

Drivers, Receivers, Transceivers Feature Summary

• Provides 2500VRMS galvanic isolation between the processor side and the RS-485/RS-422 bus using integrated high-voltage capacitors.
• Features a 420kHz transformer driver that transfers power across the isolation barrier to the isolated side using an external transformer.
• Includes fail-safe circuitry ensuring a logic-high receiver output when inputs are open or shorted.

Drivers, Receivers, Transceivers Applications

• Isolated RS-485 Systems
• Systems with Large Common-Mode Voltages
• Industrial-Control Local Area Networks
• Telecommunications Systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to ensure correct temperature range and package configuration. Confirm that the required external isolation transformer matches the MXL1535E's specific voltage requirements, as it differs from the MAX3535E variant.

Drivers, Receivers, Transceivers Selection Notes

Select this component over the MAX3535E when the system requires a narrower logic-side supply voltage range of +4.5V to +5.5V. Ensure the design accommodates the necessary external transformer for power transfer, as the device relies on the internal transformer driver rather than an integrated power supply.

Drivers, Receivers, Transceivers Part Context

The MXL1535E series serves as a functionally and pin-compatible improvement of the LTC1535. It shares the same core architecture as the MAX3535E but offers an optimized secondary supply range designed to allow the use of step-down transformers for +5V operation, resulting in considerable power savings.

Drivers, Receivers, Transceivers Replacement Considerations

MXL1535EEWI

Drivers, Receivers, Transceivers FAQ

How does the MXL1535E achieve isolation?

It uses integrated high-voltage capacitors for data transmission and an external transformer driven by an internal 420kHz oscillator for power transfer across the barrier.

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

The receivers feature a 1/8 unit load, allowing up to 256 devices to be connected on the same bus.