ADM1491EBRZ-REEL7

Overview

The ADM1491EBRZ-REEL7 is a full-duplex RS-485/RS-422 transceiver designed for high-speed communication in multipoint transmission lines. It operates from a single 5 V power supply and supports data rates up to 16 Mbps with minimal propagation delay. The device features ±8 kV ESD protection on I/O pins, thermal shutdown, and short-circuit protection. It includes one driver and one receiver within a 14-lead narrow-body SOIC package.

Feature Summary

• Full-duplex operation supporting RS-485 and RS-422 protocols
• Integrated electrostatic discharge protection on differential input/output pins
• Thermal shutdown circuitry prevents damage during excessive power dissipation or bus contention
• Fail-safe receiver design ensures logic high output when inputs are unconnected

Applications

• High-speed motor control applications
• Industrial field networks
• Multipoint data transmission systems
• Single-ended-to-differential signal conversion

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official documentation to confirm the packaging format. Confirm that the component meets RoHS compliance requirements as indicated by the 'Z' suffix in the part number. Ensure the procurement channel provides valid traceability for the Analog Devices manufacturing source.

Selection Notes

Select this component for designs requiring full-duplex communication at speeds up to 16 Mbps. Verify that the system operates within the specified 5 V power supply range and the industrial temperature limits of -40°C to +85°C. Ensure the application utilizes balanced transmission lines compatible with the TIA/EIA-485-A standard.

Part Context

This component belongs to the ADM1490E/ADM1491E series of high-speed transceivers manufactured by Analog Devices. The ADM1491E variant specifically provides a 14-lead package configuration compared to the 8-lead options available in the ADM1490E series. Both variants share identical electrical specifications and functional capabilities.

Replacement Considerations

The ADM1491EBRMZ serves as a pin-compatible alternative utilizing a 10-lead MSOP package. Other members of the ADM1490E/ADM1491E family offer equivalent electrical performance but differ in physical package dimensions.