ISL31498EIUZ

Overview

The ISL31498EIUZ is a half-duplex, fault-protected RS-485/RS-422 transceiver operating on a single 4.5V to 5.5V supply. It supports data rates up to 15Mbps with low quiescent current of 2.3mA and shutdown current of 10µA. The device features ±60V bus pin fault protection and an extended common mode range of ±25V. It includes hot-plug circuitry, full fail-safe receivers, and slew-rate limiting is not enabled for this specific variant.

Feature Summary

• Extended common mode voltage tolerance exceeding standard RS-485 requirements
• Robust fault protection against high transient overvoltages on bus pins
• Hot-plug capability maintaining three-state outputs during power transitions

Applications

• Utility meters and automated meter reading systems
• PROFIBUS and field bus networks in factory automation
• Security camera networks
• Building lighting and environmental control systems

Procurement Notes

Verify the component marking '1498E' and package type M8.118 (8 Ld MSOP) to confirm authenticity. Ensure the temperature range matches -40°C to +85°C. Check for RoHS compliance and lead-free status as specified in the ordering information section of the datasheet.

Selection Notes

Select this model when half-duplex communication at speeds up to 15Mbps is required alongside high noise immunity. It is suitable for environments with significant common mode voltages or potential bus faults. Verify that slew-rate limiting is not necessary for the application, as this variant does not include it.

Part Context

This part belongs to the ISL3149xE family of differential transceivers designed to exceed RS-485 and RS-422 standards. It shares core robustness features like ±60V fault protection with other members but differs in duplex configuration and data rate capabilities compared to variants like the ISL31490E or ISL31493E.

Replacement Considerations

For exact replacement, refer to the ISL32490E Series Datasheet as indicated in the documentation notes.