ADM1491EBRMZ-REEL7

Overview

The ADM1491EBRMZ-REEL7 is a full-duplex RS-485/RS-422 transceiver from Analog Devices, designed for high-speed communication in multipoint transmission lines. It supports data rates up to 16 Mbps and operates on a single 5 V power supply (4.75 V to 5.25 V). The device features ±8 kV ESD protection on I/O pins, thermal shutdown, and short-circuit protection. It utilizes a 10-lead MSOP package and includes fail-safe receiver logic. The input impedance of 12 kΩ allows up to 32 nodes on the bus.

Feature Summary

• Full-duplex operation supporting RS-485 and RS-422 protocols
• Integrated electrostatic discharge protection on differential pins
• Thermal shutdown circuitry prevents damage during fault conditions
• Fail-safe receiver ensures logic high output when inputs are floating

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 matches the required packaging format. Confirm that the component meets RoHS compliance standards as indicated by the 'Z' designation in the base part number. Ensure the reel quantity aligns with manufacturing requirements before finalizing procurement orders.

Selection Notes

Select this model for applications requiring full-duplex communication at speeds up to 16 Mbps. The 10-lead MSOP package is suitable for space-constrained designs. Verify that the system operates within the specified 5 V supply range and temperature limits of -40°C to +85°C.

Part Context

This component belongs to the ADM1490E/ADM1491E series of high-speed transceivers. The ADM1491E variant specifically provides full-duplex capability with separate driver and receiver enable controls, distinguishing it from half-duplex alternatives in the same family.

Replacement Considerations

The ADM1491EBRZ-REEL7 serves as a direct replacement if a 14-lead SOIC package is acceptable instead of the 10-lead MSOP. Other ADM1491E variants may differ only in package type or reel configuration.