The Intersil ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E are ±16. 5kV IEC61000 ESD Protected, 3. 0V to 5. 5V powered, single receivers that meet both the RS-485 and RS-422 standards for balanced communication. These receivers have very low bus currents (+125µA/-100µA), so they present a true “1/8 unit load” to the RS-485 bus. This allows up to 256 receivers on the network without violating the RS-485 specification’s 32 unit load maximum and without using repeaters. Receiver 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 ISL3280E and ISL3284E feature an always enabled Rx; the ISL3281E and ISL3285E feature an active high Rx enable pin and the ISL3282E and ISL3283E include an active low enable pin. All versions are offered in Industrial and Extended Industrial (-40°C to +125°C) temperature ranges. A 26% smaller footprint is available with the ISL3282E and ISL3285E TDFN package. These devices, plus the ISL3284E, also feature a logic supply pin (VL) that sets the VOH level of the RO output (and the switching points of the RE/RE input) to be compatible with another supply voltage in mixed voltage systems. For companion single RS-485 transmitters in micro packages, please see the ISL3293E datasheet.

Features

  • IEC61000 ESD protection on RS-485 inputs: ±16.5kV
  • Class 3 ESD level on all other pins: >5kV HBM
  • Pb-free (RoHS compliant)
  • Wide supply range: 3.0V to 5.5V
  • Specified for +125°C operation
  • Logic supply pin (VL) eases operation in mixed supply systems (ISL3282E, ISL3284E, ISL3285E only)
  • Full fail-safe (open, short, terminated/undriven)
  • True 1/8 unit load allows up to 256 devices on the bus
  • High data rates: up to 20Mbps
  • Low quiescent supply current: 500µA (max)
  • Very low shutdown supply current: 20µA (max)
  • -7V to +12V common mode input voltage range
  • Tri-statable Rx available (active low or high EN input)
  • 5V tolerant logic inputs when VCC ≤ 5V

Applications

  • Clock Distribution
  • High Node Count Systems
  • Space Constrained Systems
  • Security Camera Networks
  • Building Environmental Control/Lighting Systems
  • Industrial/Process Control Networks

tuneProduct Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active SOT23 Reel 3000
Availability
Active SOT23 Reel 250
Availability
Active SOT23 Reel 3000
Availability

descriptionDocumentation

Title language Type Format File Size Date
Datasheets & Errata
star ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Datasheet Datasheet PDF 1022 KB
Application Notes & White Papers
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
AN1991: Isolating RS-485 Interfaces with High-Speed Digital Optocouplers Application Note PDF 513 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
AN1976: Important Transient Immunity Tests for RS-485 Networks Application Note PDF 338 KB
AN1977: Transient Voltage Suppressors: Operation and Features Application Note PDF 365 KB
AN1978: Surge Protection for Intersil's Standard RS-485 Transceivers Application Note PDF 369 KB
AN1979: Surge Protection simplified with Intersil's Overvoltage Protected (OVP) Transceivers Application Note PDF 500 KB
AN1980: Ground Potential Differences: Origin and Remedies Application Note PDF 375 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
Other
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
TB347: Tape and Reel Specification for Integrated Circuits Other PDF 752 KB
TB505: Understanding the Difference between HBM and IEC 61000-4-2 ESD Immunity Other PDF 254 KB

file_downloadDownloads

Title language Type Format File Size Date
Models
isl3283e_3v Model - Other IBS 19 KB