ISL32490EIBZ

Overview

The ISL32490EIBZ is a fully compliant RS-485 and RS-422 transceiver manufactured by Renesas Electronics Corporation. It operates on a single 5V supply voltage with a maximum data rate of 250 kbps. The device features ±60V fault protection on the bus pins and provides overvoltage protection (OVP) capabilities. It supports common-mode rejection up to ±25V and includes electrostatic discharge (ESD) protection. The component is housed in a 14-pin SOIC package and is designed for industrial applications requiring robust communication interfaces.

Feature Summary

• Provides full compliance with RS-485 and RS-422 standards for reliable serial communication
• Integrates ±60V fault protection to safeguard the transceiver against bus line faults
• Features high common-mode rejection ratio of ±25V for noise immunity
• Includes built-in ESD protection to enhance durability in harsh environments

Applications

• Industrial automation control systems
• Building automation networks
• Factory process monitoring equipment
• Multi-drop communication buses

Procurement Notes

This component is officially classified as obsolete or end-of-life by the manufacturer. Procurement must rely exclusively on authorized distributors or verified secondary market suppliers. Buyers should request original datasheets and proof of authenticity to avoid counterfeit parts. Verify that the specific suffix matches the required package and temperature range, as legacy inventory may vary in storage conditions and traceability documentation.

Selection Notes

Select this part when a standard 5V RS-485/RS-422 interface with high fault tolerance is required. It is suitable for designs needing ±60V protection without external clamping diodes. Consider the 250 kbps speed limit for application timing. Ensure the 14-SOIC footprint fits the PCB layout. Since it is an older generation part, verify if newer Renesas equivalents offer improved performance or availability for new designs.

Part Context

The ISL32490EIBZ belongs to the Intersil/Renesas family of high-voltage fault-protected transceivers. It complements other devices like the ISL32450 by offering similar protocol support but with distinct pinout or protection specifications. This series targets industrial markets where bus integrity is critical. The transition from Intersil to Renesas maintains the product lineage and technical specifications for existing design-in customers.

Replacement Considerations

As an obsolete part, direct substitutes are limited. Check Renesas for updated RS-485 transceivers with similar fault protection ratings. Cross-reference with other manufacturers' ±60V protected transceivers, ensuring pin compatibility and electrical parameters match. Verify that any replacement supports the same 14-SOIC package to minimize PCB redesign efforts.