ISL32740EIAZ

Drivers, Receivers, Transceivers Overview

The ISL32740EIAZ is a high-speed, galvanically isolated RS-485 transceiver manufactured by Renesas Electronics. It utilizes Giant Magnetoresistance (GMR) technology to provide robust signal isolation between the logic and bus sides of the interface. The device supports data rates up to 10 Mbps and operates with a single 3.3 V supply voltage. It features a 1/8 unit load configuration, enabling the connection of up to 32 nodes on a single bus network. Key electrical specifications include a propagation delay of 15 ns and a common-mode transient immunity of 50 kV/μs. The component is housed in a 16-pin SOICW package with an 8 mm creepage distance.

Drivers, Receivers, Transceivers Feature Summary

• Galvanic isolation achieved through Giant Magnetoresistance (GMR) technology
• High common-mode transient immunity for noisy industrial environments
• Fail-safe receiver design ensures defined output states during idle conditions
• Thermal shutdown and current limiting protect against short circuits and excessive power dissipation

Drivers, Receivers, Transceivers Applications

• Industrial automation and control systems requiring reliable serial communication
• Building automation networks utilizing RS-485 protocols
• Factory floor instrumentation and sensor interfaces
• Data acquisition systems operating in electrically noisy environments

Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix EIAZ to confirm the tape and reel packaging format and temperature rating. Confirm RoHS compliance status as per the latest manufacturer documentation. Check for end-of-life notifications or discontinuance alerts before finalizing procurement plans. Ensure the supplier provides valid traceability documents for quality assurance purposes.

Drivers, Receivers, Transceivers Selection Notes

Select this component when a 3.3 V logic interface is required alongside high-voltage isolation. The 1/8 unit load specification allows for larger network topologies compared to standard 1/4 unit load devices. Consider the 8 mm creepage distance for applications demanding enhanced safety clearance. Evaluate the GMR isolation technology benefits over traditional capacitive or magnetic coupling methods for long-term reliability.

Drivers, Receivers, Transceivers Part Context

This part belongs to the ISL3274x family of isolated RS-485 transceivers from Renesas. It shares functional similarities with the ISL32743E but differs in unit load configuration and specific isolation ratings. The family is designed for harsh industrial environments where signal integrity and electrical isolation are critical. It serves as a bridge between low-voltage microcontrollers and high-noise differential bus lines.

Drivers, Receivers, Transceivers Replacement Considerations

Direct substitutes within the same product line include the ISL32743E, though differences in unit load and isolation voltage must be verified. Cross-reference pinouts and electrical characteristics carefully when considering alternative manufacturers' isolated RS-485 transceivers.