MAX22026AWA+

Drivers, Receivers, Transceivers Overview

The MAX22026AWA+ is a compact, isolated half-duplex RS-485/RS-422 transceiver featuring 3.5kVRMS digital galvanic isolation between the UART side and cable side. It supports data rates up to 16Mbps with non-slew-rate-limited drivers. The device operates on VDDA (1.71V to 5.5V) and VDDB (4.75V to 5.25V). Key electrical parameters include ±10kV HBM ESD protection on A/B pins, 50kV/μs common-mode transient immunity, and an operating temperature range of -40°C to +85°C. It utilizes AutoDirection control to eliminate external DE/RE signals.

Drivers, Receivers, Transceivers Feature Summary

• Integrated AutoDirection control automatically manages driver enable/disable states based on TXD input and bus voltage, removing the need for separate direction control signals.
• Provides robust communication through high-voltage capacitive isolation that breaks ground loops and withstands significant potential differences between ports.
• Features integrated ESD protection rated at ±10kV on driver outputs and receiver inputs to ensure reliability in harsh environments.

Drivers, Receivers, Transceivers Applications

• Utility Meters
• Industrial Automation Equipment
• Programmable Logic Controllers
• HVAC Systems

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'AWA+' against the manufacturer's official ordering guide to confirm package type and RoHS compliance status. Ensure the procurement channel provides traceability documentation matching Analog Devices specifications. Cross-reference the part number with current production status notices to avoid obsolete stock.

Drivers, Receivers, Transceivers Selection Notes

Select this component when high-speed transmission up to 16Mbps is required alongside galvanic isolation. Unlike slew-rate limited variants, this model allows faster edge rates suitable for longer cables or higher baud rates. Verify that the system design accommodates the necessary pullup/pulldown resistors on the A and B lines for proper AutoDirection functionality.

Drivers, Receivers, Transceivers Part Context

This device belongs to the MAX22025-MAX22028 family of isolated transceivers. It shares the same functional architecture as siblings like the MAX22025 and MAX22027 but differs in driver speed characteristics. The 'F' suffix variants offer failsafe receivers, whereas the standard MAX22026 does not guarantee a logic state during open-circuit conditions.

Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitutes within the same family include MAX22028AWA+. Other models such as MAX22025 or MAX22027 are functionally similar but operate at lower maximum data rates due to slew-rate limiting.