ISL31485EIBZ

Overview

The ISL31485EIBZ is a half-duplex RS-485/RS-422 transceiver powered by a single 5V supply. It features ±60V fault protection and an extended common mode range of ±25V. The device supports data rates up to 1Mbps with slew rate limiting. It includes cable invert pins for polarity reversal while maintaining full fail-safe operation. The quiescent supply current is typically 2.3mA, and it operates within a temperature range of -40°C to +85°C in an 8-pin SOIC package.

Feature Summary

• Fault protected RS-485 bus pins withstand voltages up to ±60V
• Extended common mode range allows operation with voltages up to ±25V
• Cable invert pins correct reversed cable connections while maintaining Rx full fail-safe functionality
• Full fail-safe receiver design ensures logic high output if inputs are floating, shorted, or on an idle bus

Applications

• Utility meters and automated meter reading systems
• High node count RS-485 systems
• PROFIBUS and RS-485 based field bus networks
• Security camera networks
• Building lighting and environmental control systems

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and tape-and-reel availability. Confirm that the component meets RoHS compliance requirements for your manufacturing process. Ensure the operating temperature range aligns with your system's environmental specifications before finalizing procurement.

Selection Notes

Select this component when designing half-duplex RS-485 networks requiring robust fault protection against high voltage transients. The extended common mode range makes it suitable for environments with significant ground potential differences. Consider the cable invert feature if there is a risk of misconnected cables during installation.

Part Context

This part belongs to the ISL3148xE family of fault-protected differential transceivers designed to exceed standard RS-485 and RS-422 requirements. The family includes both half-duplex (ISL31485E) and full-duplex (ISL31483E) variants. These devices are engineered for rugged industrial applications where reliability under harsh electrical conditions is critical.

Replacement Considerations

The datasheet identifies ISL32483E and ISL32485E as recommended replacement parts for the ISL31483E and ISL31485E respectively.