MAX14942GWE+

Digital Isolators Overview

The MAX14942GWE+ is an isolated RS-485/PROFIBUS-DP transceiver providing 5000VRMS galvanic isolation. It features a half-duplex driver and receiver with 20Mbps data rate capability. The device includes 35kV/µs typical common-mode transient immunity and 35kV ESD protection on bus pins. It operates with supply voltages of 1.71V to 5.5V for the logic side and 4.5V to 5.5V for the cable side. The receiver supports a 1/4-unit load, enabling up to 128 transceivers on a single bus.

Digital Isolators Feature Summary

• Provides robust 5000VRMS galvanic isolation between the cable-side transceiver and the logic-side controller.
• Integrates high-speed 20Mbps half-duplex communication capabilities suitable for PROFIBUS and RS-485 networks.
• Features integrated low-dropout regulator (LDO) to power the cable-side circuitry from the logic-side supply.
• Delivers exceptional signal integrity through 35kV/µs common-mode transient immunity and 35kV electrostatic discharge protection.

Digital Isolators Applications

• Industrial automation equipment
• Programmable logic controllers (PLCs)
• HVAC systems
• Power meters

Digital Isolators Procurement Notes

Verify the specific suffix 'GWE+' corresponds to the lead-free RoHS-compliant variant in the official Analog Devices datasheet. Confirm the 16-SOIC package dimensions match your PCB footprint requirements. Ensure the voltage specifications align with your system's logic and cable-side power rails before procurement.

Digital Isolators Selection Notes

Select this component when high-voltage isolation is required for RS-485 or PROFIBUS-DP applications. It is suitable for environments demanding high common-mode transient immunity and significant ESD protection on the bus lines. The integrated LDO simplifies power design by eliminating the need for a separate isolated supply for the cable side.

Digital Isolators Part Context

This part belongs to the Maxim Integrated family of isolated RS-485 transceivers designed for harsh industrial environments. It combines digital isolation technology with standard RS-485 functionality to protect sensitive control electronics from high-voltage faults and noise on the communication bus.

Digital Isolators Replacement Considerations

Check for MAX14942GWE+T if tape-and-reel packaging is preferred over tube. Verify compatibility with other devices in the MAX149xx series that offer similar isolation ratings and data rates.

Digital Isolators FAQ

What is the maximum data rate supported by the MAX14942GWE+?

The device supports a maximum data rate of 20Mbps.

How many transceivers can be connected on a single bus?

Due to the 1/4-unit load receiver, up to 128 transceivers can be placed on a common bus.