Overview

The Intersil ISL3282EMRTEP is a ±16. 5kV IEC61000 ESD protected, 3. 0V to 5. 5V powered, single receiver that meets both the RS-485 and RS-422 standards for balanced communication. This receiver has very low bus currents (+125μA/-100μA), so it presents 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 ISL3282EMRTEP includes an active low enable pin and is offered in the Military Temperature range (-55°C to +125°C). A 26% smaller footprint is available with the TDFN package. This device also features 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. Device Information The specifications for an Enhanced Product (EP) device are defined in a Vendor Item Drawing (VID), which is controlled by the Defense Supply Center in Columbus (DSCC). “Hot-links” to the applicable VID and other supporting application information are provided on our website.

ISL3282EMRTEP Functional Diagram
ISL3282EMRTEP Functional Diagram
  • Specifications per DSCC VID V6210601
  • Full military temperature electrical performance from -55°C to +125°C
  • Controlled baseline with one wafer fabrication site and one assembly/test site
  • Full homogeneous lot processing in wafer fab
  • No combination of wafer fabrication lots in assembly
  • Full traceability through assembly and test by date/trace code assignment
  • Enhanced process change notification
  • Enhanced obsolescence management
  • Eliminates need for up-screening a COTS component
  • ±16.5kV IEC61000 ESD protection on RS-485 inputs
  • Class 3 ESD level on all other pins: >5kV HBM
  • Wide supply rang: 3.0V to 5.5V
  • Specified for +125°C operation
  • Logic supply pin (VL) eases operation in mixed supply systems
  • 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 16Mbps
  • Low quiescent supply current: 500μA (maximum)
  • Very low shutdown supply current: 20μA (maximum)
  • -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

Documentation

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.

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Product Options

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    Part Number
    ISL3282EMRTEP-TK
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    Samples Available
    		 TDFN Reel 3000 1 Get Samples,
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