インタフェース&コネクティビティ

概要

The Intersil ISL3280E, ISL3281E, ISL3282E, ISL3283E, and  ISL3284E 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 features 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 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.

ISL328xE Functional Diagram
ISL328xE Functional Diagram
  • 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 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

アプリケーション

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

ドキュメント

タイトル 分類 日付
ISL3280E, ISL3281E, ISL3282E, ISL3283E, ISL3284E, ISL3285E Datasheet
PDF993 KB
データシート
AN1978: Surge Protection for Renesas' Standard RS-485 Transceivers
PDF365 KB
アプリケーションノート
AN1985: Transient Protection for the Standard RS-485 Transceiver: ISL3152E
PDF207 KB
アプリケーションノート
AN1979: Surge Protection simplified with Renesas' Overvoltage Protected (OVP) Transceivers
PDF474 KB
アプリケーションノート
R15AN0002: RS-485 Transient Protection in Industrial DC-Supply Buses
PDF178 KB
アプリケーションノート
AN1991: Isolating RS-485 Interfaces with High-Speed Digital Optocouplers
PDF513 KB
アプリケーションノート
AN1990: RS-485 Transceivers in J1708 Physical Layer Applications of Heavy Duty Vehicles
PDF826 KB
アプリケーションノート
AN1987: RS-485 External Fail-Safe Biasing for Isolated Long Haul Buses
PDF443 KB
アプリケーションノート
AN1986: External Fail-Safe Biasing of RS-485 Networks
PDF582 KB
アプリケーションノート
AN1989: RS-422 vs RS-485: Similarities and Key Differences
PDF440 KB
アプリケーションノート
AN1976: Important Transient Immunity Tests for RS-485 Networks
PDF338 KB
アプリケーションノート
AN1977: Transient Voltage Suppressors: Operation and Features
PDF365 KB
アプリケーションノート
AN1980: Ground Potential Differences: Origin and Remedies
PDF375 KB
アプリケーションノート
AN1593: Add a Loss of Signal (LOS) Indicator to Your RS-485 or RS-422 Transceiver
PDF559 KB
アプリケーションノート
アナログIC　カタログ
PDF5.10 MBEnglish
カタログ
TB347: Tape and Reel Specification for Integrated Circuits
PDF825 KB
その他資料
TB506: Functional Principles of RS-485 Drivers and Receivers
PDF156 KB
その他資料
TB511: The Unit Load Concept
PDF253 KB
その他資料
TB505: Understanding the Difference between HBM and IEC 61000-4-2 ESD Immunity
PDF254 KB
その他資料
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II
PDF398 KB
製品変更通知
TB509: Detecting Bus Signals Correctly with Failsafe Biased RS-485 Receivers
PDF266 KB
技術概要
How to Simplify Industrial PC Interfaces
PDF920 KB
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