The ISL3179E and ISL3180E are high ESD protected, 3. 3V powered, single transceivers that meet both the RS-485 and RS-422 standards for balanced communication. Each device has low bus currents (+220μA/-150μA), so they present a “1/5 unit load” to the RS-485 bus. This allows up to 160 transceivers on the network without violating the RS-485 specification’s 32 unit load maximum, and without using repeaters. Receiver (Rx) inputs feature a “full fail-safe” design, which ensures a logic high Rx output if Rx inputs are floating, shorted, or terminated but undriven. The ISL3180E is configured for full duplex applications. The ISL3179E half duplex version multiplexes the Rx inputs and Tx outputs to allow a transceiver with an output disable function in 8 Ld packages. Hot plug circuitry ensures that the Tx and Rx outputs remain in a high impedance state while the power supply stabilizes.

Features

  • High ESD protection on RS-485 I/O pins
  • ISL3179E: ±16.5kV IEC61000
  • ISL3180E: ±12kV HBM
  • Class 3 HBM level on all other pins (ISL3179E): >9kV
  • Specified for +125°C operation
  • High data rates: up to 40Mbps
  • 5V tolerant logic inputs
  • 1/5 unit load allows up to 160 devices on the bus
  • Full fail-safe (open, shorted, terminated/undriven) receiver
  • Hot plug - Tx and Rx outputs remain three-state during power-up
  • Low quiescent current: 4mA (max)
  • Low current shutdown mode: 1μA (max)
  • -7V to +12V common-mode input voltage range
  • Three-state Rx and Tx outputs
  • 16/16.5ns (max) Tx/Rx propagation delays; 1.5ns (max) skew
  • Operates from a single +3.3V supply (10% tolerance)
  • Current limiting and thermal shutdown for driver overload protection
  • Pb-free (RoHS compliant)

Applications

  • Motor Controller/Position Encoder Systems
  • Factory Automation
  • Field Bus Networks
  • Security Networks
  • Building Environmental Control Systems
  • Industrial/Process Control Networks

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOICN Tube 980
Availability
Active SOICN Reel 2500
Availability
Active SOICN Reel 250
Availability
Active DFN Tube 100
Availability
Active DFN Reel 6000
Availability
Active DFN Reel 250
Availability
Active MSOP Tube 980
Availability
Active MSOP Reel 2500
Availability
Active MSOP Reel 250
Availability
Active SOICN Tube 980
Availability
Active SOICN Reel 2500
Availability
Active SOICN Reel 250
Availability
Active DFN Tube 100
Availability
Active DFN Reel 6000
Availability
Active DFN Reel 250
Availability
Active MSOP Tube 980
Availability
Active MSOP Reel 2500
Availability
Active MSOP Reel 250
Availability

Documentation & Downloads

Title language Type Format File Size Date
Datasheets & Errata
ISL3179E, ISL3180E Datasheet Datasheet PDF 1.18 MB
Application Notes & White Papers
R15AN0005: EFT Immunity of the ISL315xE and ISL317xE Families Application Note PDF 551 KB
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses Application Note PDF 178 KB
How to Simplify Industrial PC Interfaces 简体中文 White Paper PDF 920 KB
RS-485 Transceiver Tutorial 简体中文 White Paper PDF 246 KB
AN1991: Isolating RS-485 Interfaces with High-Speed Digital Optocouplers Application Note PDF 513 KB
Design Considerations for High-Speed RS-485 Data Links White Paper PDF 624 KB
AN1990: RS-485 Transceivers in J1708 Physical Layer Applications of Heavy Duty Vehicles Application Note PDF 826 KB
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses Application Note PDF 443 KB
AN1986: External Fail-Safe Biasing of RS-485 Networks Application Note PDF 582 KB
AN1985: Transient Protection for the Standard RS-485 Transceiver: ISL3152E Application Note PDF 335 KB
AN1989: RS-422 vs RS-485: Similarities and Key Differences Application Note PDF 440 KB
AN1977: Transient Voltage Suppressors: Operation and Features Application Note PDF 365 KB
AN1980: Ground Potential Differences: Origin and Remedies Application Note PDF 375 KB
AN1978: Surge Protection for Intersil's Standard RS-485 Transceivers Application Note PDF 369 KB
AN1976: Important Transient Immunity Tests for RS-485 Networks Application Note PDF 338 KB
AN1979: Surge Protection simplified with Intersil's Overvoltage Protected (OVP) Transceivers Application Note PDF 500 KB
AN1593: Add a Loss of Signal (LOS) Indicator to Your RS-485 or RS-422 Transceiver Application Note PDF 559 KB
PCNs & PDNs
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II Product Change Notice PDF 398 KB
PCN14036 - Wafer fabrication Site Change for Listed Intersil Products - Palm Bay, Florida Product Change Notice PDF 294 KB
PCN13060 - Test Site Change for the Listed Intersil Products Product Change Notice PDF 223 KB
PCN13013 - Test Site Change for the Listed Intersil Products - Carsem (CAS) Ipoh Malaysia Product Change Notice PDF 207 KB
PCN12068 - SOIC w/ Copper Bond Wire @ ASECL as Alternate Assembly Site Product Change Notice PDF 108 KB
PCN10055 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - STATS ChipPAC Malaysia Product Change Notice PDF 248 KB
Downloads
isl3179e Model IBS 34 KB
Other
Motor Solution Brochure 日本語 Brochure PDF 4.54 MB
Analog ICs Brochure 日本語 Brochure PDF 4.20 MB
PIN19028 - Q3 Cy 19 Price Increase Notice Price Increase Notice PDF 208 KB
TB506: Functional Principles of RS-485 Drivers and Receivers Other PDF 156 KB
TB509: Detecting Bus Signals Correctly with Failsafe Biased RS-485 Receivers Other PDF 240 KB
TB511: The Unit Load Concept Other PDF 253 KB
PA16061 - Introduce New T-type End Plug for n-SOIC rail (packing tube) Product Advisory PDF 106 KB
PA14042 - Minimum Line Quantity Change Product Advisory PDF 363 KB
TB505: Understanding the Difference between HBM and IEC 61000-4-2 ESD Immunity Other PDF 254 KB