ISL31478EIBZ-T7A

Overview

The ISL31478EIBZ-T7A is a low-power RS-422/RS-485 transceiver manufactured by Renesas Electronics. It integrates one driver and one receiver in an SOIC-14 package, supporting data rates up to 1 Mbps. The device operates on a single 5 V supply with a typical quiescent current of 2.3 mA. It features overvoltage protection on inputs and outputs, ensuring robust performance in harsh environments. The component supports full-duplex communication and includes a shutdown mode for power conservation. It functions reliably within an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrated overvoltage protection on driver and receiver I/O pins
• Low-power operation with dedicated shutdown control pin
• Supports RS-422 and RS-485 communication standards
• High electromagnetic interference immunity

Applications

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

Procurement Notes

Verify the specific suffix T7A indicates reel packaging when sourcing. Confirm RoHS compliance status through official Renesas documentation prior to integration. Check for product discontinuance notifications as Intersil assets are managed under Renesas. Ensure ESD handling protocols are followed during assembly due to moisture sensitivity classification.

Selection Notes

Select this component for applications requiring 5V operation with high noise immunity. Compare against ISL31483EIBZ-T7A if higher data rates are needed. Consider ISL31492EIBZ-T7A for half-duplex requirements in smaller packages. Verify interface compatibility with existing microcontroller UARTs before finalizing the design.

Part Context

This part belongs to the ISL314xxE series of high-performance serial interface transceivers. Originally developed by Intersil, the product line was integrated into Renesas Electronics following their acquisition. The series is designed for reliable communication in electrically noisy industrial environments, offering superior common-mode rejection compared to standard transceivers.

Replacement Considerations

Direct substitutes include ISL31483EIBZ-T7A for similar functionality with different speed characteristics. Cross-reference with MAX31485E for pin-compatible alternatives from other manufacturers. Verify electrical parameters match exactly before swapping components in existing designs.