ISL31490EIBZ-T7A

Overview

The ISL31490EIBZ-T7A is a full-duplex, fault-protected RS-485/RS-422 transceiver manufactured by Renesas Electronics. It operates on a single 5V supply with a typical quiescent current of 2.3mA and supports data rates up to 250kbps. The device features ±60V fault protection and an extended common mode range of ±25V. It includes hot-plug circuitry, low-power shutdown (10µA), and full fail-safe receiver inputs. Packaged in a 14-lead SOIC, it functions within a temperature range of -40°C to +85°C.

Feature Summary

• Fault-protected bus pins withstand up to ±60V with ±80V transient tolerance
• Extended common mode voltage range of ±25V for robust operation
• Full fail-safe receiver design ensures logic high output during idle or open conditions
• Hot-plug capability maintains three-state outputs during power-up and power-down

Applications

• Utility meters and automated meter reading systems
• High node count fieldbus networks such as PROFIBUS
• Security camera networks
• Building lighting and environmental control systems
• Industrial and process control networks

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and reel specifications. Confirm that the component meets RoHS compliance requirements for your assembly process. Check for any recent Product Change Notices regarding manufacturing location or material updates before finalizing procurement orders.

Selection Notes

Select this component when designing systems requiring high noise immunity and protection against severe electrical faults on the communication bus. The full-duplex architecture allows simultaneous transmission and reception. Ensure the application environment stays within the specified operating temperature range and supply voltage limits for optimal performance.

Part Context

This part belongs to the ISL3149xE family of differential transceivers designed to exceed standard RS-485 and RS-422 requirements. The 'E' designation indicates enhanced fault protection capabilities compared to standard variants. The 'IBZ' suffix specifies the 14-lead SOIC package, while '-T7A' denotes tape and reel packaging configuration.

Replacement Considerations

Consult the ISL32490E datasheet for exact replacement options if newer designs are required. Verify pin compatibility and electrical specifications before substituting with other RS-485 transceivers from different manufacturers.