ADM1485JR-REEL

Overview

The ADM1485JR-REEL is a differential line transceiver designed for high-speed bidirectional data communication on multipoint bus transmission lines. It complies with EIA RS-485 and RS-422 standards, featuring one driver and one receiver within an 8-Lead SOIC package. The device operates from a single 5 V power supply with a typical current consumption of 2.2 mA when enabled. It supports data rates up to 30 Mbps and maintains a common-mode voltage range from –7 V to +12 V. The component functions within the commercial temperature range of 0°C to 70°C.

Feature Summary

• Thermal shutdown protection prevents excessive power dissipation during fault conditions by disabling outputs at elevated temperatures.
• Fail-safe receiver design ensures a logic high output state when inputs are unconnected or floating.
• High output impedance in disabled and powered-down states minimizes bus loading effects.

Applications

• Low Power RS-485 Systems
• DTE-DCE Interface
• Packet Switching

Procurement Notes

Verify that the ordering suffix matches the required reel packaging configuration. Confirm the specific temperature grade aligns with system requirements. Ensure the RoHS compliance status meets regulatory standards. Cross-reference the manufacturer part number against official documentation to validate authenticity before procurement.

Selection Notes

Select this component for applications requiring half-duplex communication over balanced transmission lines. Verify that the 5 V supply voltage is compatible with the system architecture. Consider the thermal management capabilities if operating near maximum load conditions. Ensure the package dimensions fit the available PCB layout constraints.

Part Context

This part belongs to the ADM1485 series of low-power RS-485 transceivers manufactured by Analog Devices. It serves as a successor to the LTC1485 model. The series utilizes BiCMOS technology to combine low power consumption with fast switching speeds suitable for industrial communication networks.

Replacement Considerations

The datasheet identifies the LTC1485 as a predecessor. No other direct substitute part numbers are explicitly listed in the provided documentation.