ISO15MDW

Overview

The ISO15MDW is an isolated 3.3-V half and full-duplex RS-485 transceiver manufactured by Texas Instruments. It integrates a digital isolator with capacitive coupling technology to provide electrical isolation between the device logic and the RS-485 bus. The component operates within a supply voltage range of 3.15 V to 3.6 V, supporting data rates up to 1 Mb/s. It features a propagation delay of 340 ns and an insulation voltage rating of 2500 Vrms. The device is housed in a 16-pin SOIC package and supports unidirectional signal transmission.

Feature Summary

• Integrates RS-485 transceiver functionality with capacitive digital isolation
• Supports both half-duplex and full-duplex communication modes
• Provides reinforced isolation for high-voltage noise immunity

Applications

• Industrial automation systems requiring isolated RS-485 communication
• Building automation networks with mixed voltage domains
• Process control instrumentation with galvanic isolation needs

Procurement Notes

Verify end-of-life status as the manufacturer indicates this part is obsolete and will be discontinued. Confirm availability through authorized distributors or approved substitute components. Ensure compliance with RoHS directives if required for specific regional regulations. Check moisture sensitivity levels for proper handling and storage conditions prior to assembly.

Selection Notes

Select this component when a combined RS-485 transceiver and digital isolator is required in a single package. It is suitable for designs needing 3.3-V operation with 2500 Vrms isolation. Consider the 1-Mb/s data rate limit and 340-ns propagation delay against system timing requirements. Evaluate the SOIC-16 footprint constraints during PCB layout planning.

Part Context

This device belongs to the ISO15 series of isolated transceivers from Texas Instruments. It combines interface capabilities with isolation technology to simplify board design by reducing component count. The series targets applications where space savings and simplified isolation barriers are critical design factors.

Replacement Considerations

Texas Instruments recommends the ISO1410DWR as a substitute for this obsolete part number. Verify pinout compatibility and electrical specifications before implementation.