ISL31490EIUZ-T7A

Overview

The ISL31490EIUZ-T7A is a full-duplex, fault-protected RS-485/RS-422 differential transceiver manufactured by Renesas Electronics Corporation. It operates on a single 5V supply and supports data rates up to 250kbps with slew-rate limiting. The device features ±60V bus pin fault protection and an extended common-mode voltage range of ±25V. It utilizes a 10-lead MSOP package and includes hot-plug circuitry that maintains three-state outputs during power-up or power-down events.

Feature Summary

• Extended common-mode voltage tolerance up to ±25V exceeds standard RS-485 requirements
• Bus pins protected against overvoltages up to ±60V with ±80V transient tolerance
• Full fail-safe receiver design ensures logic high output for floating, shorted, or idle bus conditions
• Hot-plug capability keeps driver and receiver outputs in a high-impedance state during power transitions

Applications

• Utility meters and automated meter reading systems
• High node count communication networks
• PROFIBUS and field bus networks
• Security camera networks
• Industrial process control systems

Procurement Notes

Verify the specific ordering suffix matches the required tape and reel packaging configuration. Confirm the component meets RoHS compliance standards for lead-free manufacturing. Ensure the moisture sensitivity level aligns with your assembly timeline and reflow soldering profile requirements before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring robust fault protection against high bus voltages. The extended common-mode range makes it suitable for electrically noisy environments. Verify that the 10-lead MSOP package dimensions fit your board layout constraints and that the 250kbps data rate satisfies your network speed requirements.

Part Context

This part belongs to the ISL3149xE family of 5V powered differential transceivers designed to exceed RS-485 and RS-422 standards. The family includes half-duplex and full-duplex variants with different data rates. The ISL31490E specifically provides full-duplex operation with integrated slew-rate limiting to reduce electromagnetic interference.

Replacement Considerations

Consult the ISL32490E datasheet for exact replacement options within the same product family.