ISL32450EIBZ-T

Overview

The ISL32450EIBZ-T is a full-duplex RS-422/RS-485 transceiver manufactured by Renesas Electronics Corporation. It integrates one driver and one receiver within a 14-pin SOIC package. The device supports data rates up to 250 kbps and operates on a supply voltage ranging from 3 V to 5.5 V. It functions reliably across an extended temperature range of -40°C to +85°C. Key electrical characteristics include a 60 V overvoltage protection rating on the bus pins and a common-mode rejection capability of 20 V. The output type is differential, ensuring robust signal transmission in industrial environments.

Feature Summary

• Integrated 60 V overvoltage protection on transmit and receive pins safeguards against accidental bus connection errors.
• High common-mode rejection ratio ensures reliable communication in electrically noisy industrial settings.
• Fail-safe receiver design maintains a logical high state when inputs are open or floating.

Applications

• Industrial automation control systems
• Building automation networks
• Process control instrumentation

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging configuration distinct from tube variants. Confirm RoHS compliance status and moisture sensitivity level prior to soldering. Ensure the 14-SOIC footprint matches the target PCB layout dimensions. Cross-reference the manufacturer part number with official Renesas documentation to validate current production status and availability constraints.

Selection Notes

Select this component for applications requiring full-duplex communication at speeds up to 250 kbps. The 14-pin SOIC package accommodates designs needing separate transmit and receive lines. Consider the 3 V to 5.5 V operating range for compatibility with standard logic levels. The integrated overvoltage protection reduces the need for external clamping components in harsh environments.

Part Context

This part belongs to the ISL3245xE family of protected transceivers designed for RS-422 and RS-485 interfaces. Unlike half-duplex variants such as the ISL32455, this model provides simultaneous bidirectional data flow. The family emphasizes durability through internal protection circuits, making it suitable for long-distance serial communication links in demanding operational conditions.

Replacement Considerations

Direct pin-compatible alternatives within the same series may offer different duplex modes or speed ratings. Verify that substitute parts maintain the 14-SOIC package and 60 V protection specifications. Check datasheets for any differences in propagation delay or power consumption that might impact system timing.