ISL32459EIBZ-T7A

Overview

The ISL32459EIBZ-T7A is a half-duplex RS-422/RS-485 transceiver manufactured by Renesas Electronics Corporation. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 250 kbps. The device features integrated overvoltage protection rated at 60 V on the bus pins and common-mode rejection capabilities of 20 V. It includes a shutdown mode for power reduction and is housed in an 8-pin SOIC package with a surface-mount installation style. The operational temperature range spans from -40°C to +85°C.

Feature Summary

• Integrated 60 V overvoltage protection on differential bus pins
• High common-mode rejection capability supporting noisy environments
• Dedicated shutdown pin for minimizing power consumption

Applications

• Industrial automation control systems
• Building automation networks
• Process control instrumentation

Procurement Notes

Verify the specific suffix T7A indicates tape-and-reel packaging when sourcing. Confirm RoHS compliance status through official Renesas documentation or authorized distributor declarations prior to procurement. Ensure the ordering part number matches the required package variant and temperature grade exactly.

Selection Notes

Select this component for applications requiring robust fault protection on RS-485 buses. The 60 V OVP rating distinguishes it from standard transceivers lacking such protection. Verify that the 250 kbps data rate meets system timing requirements. Ensure the 8-pin SOIC footprint aligns with the PCB layout constraints.

Part Context

This part belongs to the ISL3245xE family of high-performance, fault-protected transceivers. The family shares core architectural features including overvoltage tolerance and low-power shutdown modes. Variants within the series differ primarily by package type, such as MSOP or SOIC, and specific thermal or electrical ratings defined by the manufacturer.

Replacement Considerations

Direct substitutes include other parts within the ISL3245xE family, such as the ISL32457EIBZ, provided the package and pinout compatibility are verified. Cross-vendor replacements require careful evaluation of OVP ratings and common-mode voltage limits to ensure equivalent bus protection.