MAX481ESA-TG068

Overview

The MAX481ESA-TG068 is a low-power, slew-rate-limited RS-485/RS-422 transceiver manufactured by Analog Devices Inc./Maxim Integrated. It supports half-duplex communication with a data rate of up to 2.5 Mbps. The device operates on a single 5 V supply (4.75 V to 5.25 V) and features 15 kV ESD protection. It includes one driver and one receiver in an 8-pin SOIC package, with an operating temperature range of -40°C to +85°C.

Feature Summary

• Slew-rate limiting reduces electromagnetic interference (EMI) during signal transitions.
• Integrated 15 kV human-body model ESD protection enhances robustness.
• Low quiescent current design minimizes power consumption.
• Fail-safe receiver ensures a logical high state when the bus is idle.

Applications

• Industrial control systems requiring reliable serial communication
• Building automation and security networks
• Multi-drop communication buses adhering to RS-485 standards

Procurement Notes

Verify the specific suffix 'TG068' against official Analog Devices documentation to confirm it denotes a valid tape-and-reel variant or specific packaging configuration distinct from standard tube versions. Ensure compatibility with existing PCB footprints and reflow profiles before procurement.

Selection Notes

Select this component for applications requiring reduced EMI through controlled edge rates while maintaining RS-485 compatibility. It is suitable for battery-powered or power-sensitive industrial nodes due to its low standby current. Verify that the 2.5 Mbps speed meets system timing requirements.

Part Context

This part belongs to the MAX481 family of low-power transceivers designed for noisy industrial environments. It provides differential transmission and reception over balanced lines, supporting multi-point configurations common in legacy and modern serial bus architectures.

Replacement Considerations

MAX481ESA+T serves as a direct functional equivalent with identical electrical specifications and pinout. Verify package dimensions and thermal characteristics to ensure interchangeability without redesign.

FAQ

Does the MAX481 support full-duplex operation?

No, the MAX481 is a half-duplex transceiver, meaning it cannot transmit and receive simultaneously on the same pair of wires.

What is the purpose of the slew-rate limitation?

The slew-rate limit controls the speed of voltage transitions on the bus, which significantly reduces electromagnetic interference (EMI) generated during data transmission.