ISL31498EIBZ-T7A

Overview

The ISL31498EIBZ-T7A is a half-duplex, fault-protected RS-485/RS-422 differential transceiver manufactured by Renesas Electronics Corporation. It operates on a single 4.5V to 5.5V supply with a typical quiescent current of 2.3mA and an ultra-low shutdown current of 10µA. The device supports data rates up to 15Mbps and features ±60V fault protection on bus pins with an extended common mode range of ±25V. It includes hot-plug circuitry, full fail-safe receivers, and high transient overvoltage tolerance of ±80V. Packaged in an 8-lead SOIC (M8.15) for industrial applications.

Feature Summary

• Bus pins protected against faults up to ±60V with ±80V transient tolerance
• Extended common mode voltage range of ±25V exceeds standard RS-485 requirements
• Hot-plug capability keeps outputs in three-state during power-up or power-down
• Full fail-safe receiver design ensures logic high output when inputs are floating or shorted

Applications

• Utility meters and automated meter reading systems
• PROFIBUS and field bus networks
• Industrial and process control networks
• Security camera networks
• Building lighting and environmental control systems

Procurement Notes

Verify the component status as discontinued or obsolete through official Renesas channels before procurement planning. Confirm that the specific ordering suffix matches the required tape and reel packaging specifications. Ensure compatibility with RoHS3 compliance standards and check for any product change notices affecting the manufacturing source or material composition.

Selection Notes

Select this model for half-duplex communication requiring high noise immunity and robust fault protection. Verify that the 15Mbps data rate aligns with system timing requirements. Ensure the 8-lead SOIC package dimensions fit the PCB layout constraints. Consider the low shutdown current for battery-powered applications requiring extended standby modes.

Part Context

This component belongs to the ISL3149xE series of fault-protected transceivers designed to exceed RS-485 and RS-422 standards. The series offers various configurations including half-duplex and full-duplex options with different data rates. The ISL31498E specifically provides a cost-effective solution for high-node-count systems requiring rugged operation in electrically noisy environments.

Replacement Considerations

Public confirmed substitute part numbers include the ISL32498E series. Verify pinout compatibility and electrical parameter equivalence before substitution. Check for updated datasheets regarding any changes in thermal characteristics or packaging dimensions.