ISL3179EFBZ-T7A

Overview

The ISL3179EFBZ-T7A is a single RS-485 transceiver manufactured by Renesas Electronics Corporation, belonging to the ISL3179E series. It operates on a fixed 3.3 V supply voltage and supports data rates up to 40 Mb/s. The device features one driver and one receiver with differential outputs, housed in an SOIC-Narrow-8 package. It functions within a temperature range of -40°C to +125°C and draws 4 mA during operation. Designed for half-duplex applications, it presents a 1/5 unit load to the bus, allowing up to 160 transceivers on a network.

Feature Summary

• High ESD protection capabilities integrated into the transceiver design.
• Full fail-safe receiver ensures logic high output when inputs are floating or undriven.
• Hot plug circuitry maintains high impedance state during power supply stabilization.

Applications

• Industrial communication networks requiring robust RS-485 connectivity.
• Building automation systems utilizing balanced communication standards.
• Process control environments operating under extreme temperature conditions.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and moisture sensitivity level prior to assembly. Ensure storage conditions adhere to humidity requirements to prevent damage before reflow soldering processes begin.

Selection Notes

Select this model for designs requiring extended industrial temperature ranges up to +125°C. Choose this variant over standard versions when higher ESD immunity is critical for the application environment. Verify that the 40 Mb/s speed meets system timing requirements without exceeding the 3.3 V supply constraints.

Part Context

This component is part of the ISL3179E family, which includes variants like the ISL3179EIBZ-T7A differing primarily in operating temperature grades. The FBZ suffix indicates the specific industrial temperature range extension compared to commercial grade options within the same product line.

Replacement Considerations

ISL3179EIBZ-T7A serves as a verified substitute with identical electrical specifications but a lower maximum operating temperature of +85°C instead of +125°C. Ensure thermal management aligns with the replacement's limitations.