ADM1486ARZ-REEL7

Overview

The ADM1486ARZ-REEL7 is a low-power, half-duplex RS-485/RS-422 transceiver designed for high-speed bidirectional data communication on multipoint bus transmission lines. It operates from a single 5 V power supply and supports data rates up to 30 Mbps. The device features independent driver and receiver enable controls, ensuring minimal loading when disabled. Key electrical parameters include a typical supply current of 0.8 mA with outputs disabled, a differential output voltage of at least 2.1 V under standard termination, and propagation delays of 11 ns for the driver and 12 ns for the receiver. It includes thermal shutdown protection that activates above 150°C and short-circuit protection limiting output current to ±200 mA.

Feature Summary

• Complies with EIA RS-485 and RS-422 standards and is recommended for PROFIBUS applications.
• Features extremely fast switching with minimal skew to reduce electromagnetic interference.
• Includes thermal shutdown circuitry to prevent damage during excessive power dissipation or fault conditions.
• Provides high impedance outputs when disabled or powered down to minimize bus loading.

Applications

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

Procurement Notes

Verify the specific ordering suffix to confirm packaging format. The REEL7 designation indicates tape and reel packaging containing 1000 units per manufacturer standard package. Confirm RoHS compliance status as indicated by the Z suffix in the part number. Ensure the industrial temperature range variant (A version) matches the operational requirements.

Selection Notes

Select this component for applications requiring high-speed data transmission up to 30 Mbps over balanced lines. It is suitable for systems needing low quiescent power consumption and robust protection against short circuits and thermal overload. Verify that the 5 V supply voltage aligns with the system design and that the SOIC-8 package fits the available PCB footprint.

Part Context

The ADM1486 belongs to Analog Devices' family of RS-422/RS-485 interface ICs. It serves as a superior upgrade alternative to the SN65ALS1176. The device is fabricated using BiCMOS technology, combining low-power CMOS with fast-switching bipolar processes to achieve high performance and low power consumption simultaneously.

Replacement Considerations

Public confirmed substitute part numbers are not provided in the source material.