ADM1490EBRZ-REEL7

Overview

The ADM1490EBRZ-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. The device features ±8 kV ESD protection on I/O pins, thermal shutdown, and short-circuit protection. It complies with ANSI/TIA/EIA-485-A-1998 standards and allows up to 32 nodes on the bus due to its 12 kΩ receiver input impedance. The component is housed in an 8-lead narrow body SOIC package and functions within a temperature range of −40°C to +85°C.

Feature Summary

• Full-duplex RS-485/RS-422 interface capability for balanced transmission lines
• Integrated electrostatic discharge protection on differential input/output pins
• Built-in thermal shutdown circuitry to prevent damage during fault conditions
• Fail-safe receiver design ensuring logic high output when inputs are unconnected

Applications

• High-speed motor control applications requiring fast data rates
• Industrial field networks utilizing multipoint data transmission
• Single-ended-to-differential signal conversion systems

Procurement Notes

Verify the specific ordering suffix REEL7 indicates reel packaging rather than tube packaging when sourcing components. Confirm that the Z suffix denotes RoHS compliance status as per the manufacturer's documentation. Ensure the procurement channel provides valid traceability for the Analog Devices manufacturing origin. Cross-reference the part number against current datasheet revisions to confirm pinout and specification consistency.

Selection Notes

Select this component for designs requiring full-duplex communication at speeds up to 16 Mbps. It is suitable for environments where ±8 kV ESD protection is necessary on the bus lines. Choose this model over half-duplex alternatives when simultaneous transmit and receive paths are required. Verify that the system power supply remains stable within the 4.75 V to 5.25 V operating range to ensure proper functionality.

Part Context

This part belongs to the ADM1490E/ADM1491E family of high-speed transceivers manufactured by Analog Devices. The ADM1490E variant specifically utilizes an 8-lead package configuration, distinguishing it from the 14-lead ADM1491E. Both variants share identical electrical characteristics and functional capabilities, differing primarily in physical footprint and pin count to accommodate different board layout requirements.

Replacement Considerations

Direct replacements include other ADM1490E series parts such as the ADM1490EBRMZ for MSOP packaging or ADM1490EBRZ for tube packaging. Ensure any substitute maintains the 16 Mbps data rate and 5 V operation voltage. Verify that alternative components offer comparable ESD protection levels and thermal management features.