Interface

Overview

These Renesas devices are ±16. 5kV IEC61000-4-2 ESD protected, 3. 0V to 5. 5V powered, quad receivers for balanced communication using the RS-485 and RS-422 standards. Each receiver has low input currents (±200μA), so it presents a 1/4 unit load to the RS-485 bus and allows up to 128 receivers on the bus. The ISL32173E and ISL32177E are high data rate receivers that operate at data rates up to 80Mbps. Their 8ns maximum propagation delay skew (tolerance) ensures excellent part-to-part matching. The ISL32273E, ISL32275E, and ISL32277E are reduced supply current versions that operate at data rates up to 20Mbps. The receiver outputs are tri-statable and incorporate a hot plug feature to keep them disabled during power-up and power-down. Versions are available with a common EN/EN (ISL32173E pinout) or a versatile individual channel enable (see Table 1). A 26% smaller footprint is available with the ISL32177E and ISL32277E QFN packages and these two devices also feature a logic supply pin (VL). The VL supply sets the switching points of the enable inputs and the receiver outputs’ VOH, to levels compatible with a lower supply voltage in mixed voltage systems. Individual channel and group enable pins increase the flexibility of the ISL32177E and ISL32277E.

ISL3217xE Functional Diagram
ISL3217xE Functional Diagram
  • IEC61000 ESD protection (RS-485 inputs): 16.5kV
    • Class 3 ESD on all other pins: 8kV HBM
  • Wide supply range: 3.0V to 5.5V
  • Wide common-mode range: -7V to +12V
  • Low part-to-part propagation delay tolerance (ISL3217xE): 8ns (max)
  • Specified for +125°C operation
  • Fail-safe open Rx inputs
  • 1/4 unit load allows 128 devices on the bus
  • Available in industry standard pinouts (ISL32173E) and a 4x4 QFN (ISL32x77E) with added features
  • Logic supply pin (VL) eases operation in mixed supply systems (ISL32x77E)
  • High data rates: up to 80Mbps or 20Mbps
  • Low shutdown supply current: 60μA
  • Tri-statable Rx outputs
  • 5V tolerant logic inputs when VCC = 3.3V

Applications

  • Telecom Equipment
  • Motor Controllers/Encoders
  • Programmable Logic Controllers
  • Industrial/Process Control Networks

Documentation

Title Type Date
ISL32173E, ISL32177E, ISL32273E, ISL32275E, ISL32277E Datasheet
PDF1.49 MB
Datasheet
AN1978: Surge Protection for Renesas' Standard RS-485 Transceivers
PDF365 KB
Application Note
AN1985: Transient Protection for the Standard RS-485 Transceiver: ISL3152E
PDF207 KB
Application Note
AN1979: Surge Protection simplified with Renesas' Overvoltage Protected (OVP) Transceivers
PDF474 KB
Application Note
R15AN0011: FAQs: RS-485 Transceivers
PDF366 KB
Application Note
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses
PDF178 KB
Application Note
AN1991: Isolating RS-485 Interfaces with High-Speed Digital Optocouplers
PDF513 KB
Application Note
AN1990: RS-485 Transceivers in J1708 Physical Layer Applications of Heavy Duty Vehicles
PDF826 KB
Application Note
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses
PDF443 KB
Application Note
AN1986: External Fail-Safe Biasing of RS-485 Networks
PDF582 KB
Application Note
AN1989: RS-422 vs RS-485: Similarities and Key Differences
PDF440 KB
Application Note
AN1976: Important Transient Immunity Tests for RS-485 Networks
PDF338 KB
Application Note
AN1977: Transient Voltage Suppressors: Operation and Features
PDF365 KB
Application Note
AN1980: Ground Potential Differences: Origin and Remedies
PDF375 KB
Application Note
Analog ICs Brochure
PDF4.91 MB日本語
Brochure
Transceivers Brochure
PDF2.95 MB
Brochure
TB506: Functional Principles of RS-485 Drivers and Receivers
PDF156 KB
Other
TB511: The Unit Load Concept
PDF253 KB
Other
TB505: Understanding the Difference between HBM and IEC 61000-4-2 ESD Immunity
PDF254 KB
Other
PA16061 - Introduce New T-type End Plug for n-SOIC rail (packing tube)
PDF106 KB
Product Advisory
PCN20017 - Alternate bond wire material and assembly facility of the listed Renesas nSOIC packaged products
PDF266 KB
Product Change Notice
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II
PDF398 KB
Product Change Notice
PCN12068 - SOIC w/ Copper Bond Wire @ ASECL as Alternate Assembly Site
PDF108 KB
Product Change Notice
PCN11113A - Manufacturing Site Change for Assembly of the Listed Intersil TSSOP Packaged Products - Carsem-M (CAM) - Ipoh, Malaysia
PDF121 KB
Product Change Notice
PCN11113 - Manufacturing Site Change for Assembly of the Listed Intersil TSSOP Packaged Products - Carsem-M (CAM) - Ipoh, Malaysia
PDF120 KB
Product Change Notice
RS-485: Transmitting Full-Duplex Data over Single Twisted-Pair Cable
PDF438 KB
Report
TB509: Detecting Bus Signals Correctly with Failsafe Biased RS-485 Receivers
PDF266 KB 简体中文
Technical Brief
R70TB0002: Understanding the Differences in ESD Device-Level Testing
PDF188 KB
Technical Brief
How to Simplify Industrial PC Interfaces
PDF920 KB 简体中文
White Paper

Design & Development

ECAD Models

Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on products in the Product Options table. If a symbol or model isn't available, it can be requested directly from the website.

Explore ECAD Models

Models

Title Type Date
isl32273e_3v
IBS19 KB
Model - IBIS

Product Options

    Processing table
    Part Number
    Pkg. Type
    Carrier Type
    MOQ
    Buy / Sample
    ISL32273EFBZ
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    spa
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    Samples Available
    		 SOICN Tube 1920 Get Samples,
    ISL32273EFBZ-T
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    memory
    spa
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    		SOICN Reel 2500
    ISL32273EFVZ
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    memory
    spa
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    Samples Available
    		 TSSOP Tube 1920 Get Samples,
    ISL32273EFVZ-T
    play_circleActive
    memory
    spa
    view_in_ar
    		TSSOP Reel 2500
    ISL32273EIBZ
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    memory
    spa
    view_in_ar
    Samples Available
    		 SOICN Tube 1920 Get Samples,
    ISL32273EIBZ-T
    play_circleActive
    memory
    spa
    view_in_ar
    		SOICN Reel 2500
    ISL32273EIVZ
    play_circleActive
    memory
    spa
    view_in_ar
    Samples Available
    		 TSSOP Tube 1920 Get Samples,
    ISL32273EIVZ-T
    play_circleActive
    memory
    spa
    view_in_ar
    		TSSOP Reel 2500
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