ISL3177EIUZ

Overview

The ISL3177EIUZ is a single RS-485/RS-422 transceiver manufactured by Renesas Electronics Corporation. It operates on a single 3V to 3.6V supply with a maximum quiescent current of 800 µA and shutdown current of 10 nA. The device supports data rates up to 20 Mb/s and features ±15kV IEC61000 ESD protection. It presents a true 1/8 unit load, allowing up to 256 devices on the bus. The receiver inputs provide full fail-safe functionality, ensuring a logic high output when floating or shorted. Hot plug circuitry maintains high impedance outputs during power-up. The component is housed in an MSOP-8 package and operates within a temperature range of -40°C to +85°C.

Feature Summary

• IEC61000 ESD protection on RS-485 I/O pins with ±15kV capability
• Full fail-safe receiver design for reliable operation under open, short, or undriven conditions
• Hot plug circuitry prevents bus disturbance during system power-up
• Low power consumption with minimal shutdown current for energy-efficient networks

Applications

• Remote utility meter reading systems requiring high node counts
• Building environmental control networks
• Security camera networks utilizing RS-485 communication
• Automated industrial field bus applications

Procurement Notes

Verify the specific suffix 'IUZ' corresponds to the MSOP-8 package and tube packaging configuration as listed in official Renesas documentation. Confirm RoHS compliance status through the manufacturer's current datasheet. Ensure the ordering part number matches the exact electrical specifications required for the target application before finalizing procurement orders.

Selection Notes

Select this component for applications requiring full duplex communication capabilities within the ISL317xE family. The ISL3177E variant specifically offers separate receive and transmit pins, distinguishing it from half-duplex versions like the ISL3178E. Consider the 20 Mb/s data rate and 1/8 unit load characteristics when designing networks that demand high speed and extensive node connectivity without repeaters.

Part Context

The ISL3177EIUZ belongs to the ISL317xE series of low-power, high-speed RS-485/RS-422 transceivers. This series is designed to support balanced communication standards while minimizing board space and power usage. The 'E' designation indicates enhanced ESD protection features, and the 'I' suffix typically denotes the industrial temperature range. These devices are integral to modern serial communication interfaces requiring robust noise immunity.

Replacement Considerations

Direct functional substitutes within the same family include other ISL317xE variants such as ISL3170E, ISL3171E, ISL3172E, ISL3173E, ISL3174E, ISL3175E, ISL3176E, and ISL3178E. Verify pinout compatibility, particularly regarding full versus half-duplex configurations, when substituting. Cross-reference package dimensions and thermal characteristics to ensure mechanical fit.