ADM1490EBRMZ

Overview

The ADM1490EBRMZ is a full-duplex RS-485/RS-422 transceiver designed for high-speed communication in multipoint transmission lines. It supports data rates up to 16 Mbps and operates from a single 5 V power supply (4.75 V to 5.25 V). The device features ±8 kV ESD protection on I/O pins, open circuit fail-safe logic, and thermal shutdown protection. It includes one driver and one receiver with a 12 kΩ input impedance, allowing up to 32 nodes on the bus. The component is housed in an 8-lead MSOP 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
• Fail-safe receiver design ensuring defined output state during floating conditions
• Thermal shutdown mechanism preventing damage from excessive power dissipation

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 package type and compliance status. Ensure the procurement channel provides valid traceability for Analog Devices components. Cross-reference the part number with current datasheet revisions to confirm pinout and electrical specifications match the intended design requirements before finalizing orders.

Selection Notes

Select this component when full-duplex communication at speeds up to 16 Mbps is required. The 8-lead MSOP package suits space-constrained designs. Verify that the system operates within the specified 5 V supply range and temperature limits. Consider the 12 kΩ unit load impedance for bus node calculations. Ensure ESD protection levels meet the application environment standards.

Part Context

The ADM1490E is part of the ADM1490E/ADM1491E family of high-speed transceivers. While the ADM1491E offers additional control pins for multipoint configurations, the ADM1490E provides a simplified interface suitable for point-to-point or dedicated full-duplex links. Both devices share identical electrical characteristics and are designed for robust industrial environments.

Replacement Considerations

Direct functional replacements include other Analog Devices RS-485 transceivers with similar speed and voltage ratings. Verify pin compatibility and package dimensions when substituting. Check if the alternative device meets the same ESD protection and thermal shutdown requirements.