ADM1486AR

Overview

The ADM1486AR is a half-duplex differential line transceiver designed for high-speed bidirectional data communication on multipoint bus transmission lines. Operating from a single 5 V power supply, it complies with EIA RS-485 and RS-422 standards and is recommended for PROFIBUS applications. The device features a 30 Mbps data rate, low power consumption of 0.8 mA, and thermal shutdown protection. It includes short-circuit protection limiting output current to ±200 mA and fail-safe receiver outputs. Available in an 8-lead SOIC package, it supports up to 50 nodes on the bus.

Feature Summary

• Complies with EIA RS-485 and RS-422 standards for balanced data transmission
• Features thermal shutdown and short-circuit protection for fault safety
• Provides high impedance driver outputs when disabled or powered down
• Includes receiver open-circuit fail-safe logic high state

Applications

• Industrial field equipment
• PROFIBUS networks
• Multipoint bus transmission lines

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official guide. Suffixes such as ARZ indicate lead-free composition, while REEL7 denotes tape-and-reel packaging. Confirm that the selected variant matches the required temperature range and package type for the intended design implementation.

Selection Notes

Select this component for applications requiring high-speed differential communication up to 30 Mbps. Ensure the system operates within the specified 5 V supply voltage and industrial temperature range. Consider the 8-lead SOIC package constraints and verify that the bus topology supports the maximum node count without exceeding electrical limits.

Part Context

The ADM1486AR belongs to the ADM1486 series of low-power RS-485 transceivers manufactured by Analog Devices. It serves as a superior upgrade alternative to legacy components like the SN65ALS1176. The series is fabricated using BiCMOS technology to combine low power consumption with fast switching speeds suitable for industrial environments.

Replacement Considerations

The datasheet identifies the SN65ALS1176 as a comparable legacy component. Verify pin compatibility and electrical specifications before substitution. No other direct substitute part numbers are confirmed in the provided documentation.