Isolated 5-V Half-Duplex RS-485 Transceivers - ISO3082

ISO3082 (ACTIVE)

Isolated 5-V Half-Duplex RS-485 Transceivers

Description

The ISO3080, and ISO3086 are isolated full-duplex differential line drivers and receivers while the ISO3082, and ISO3088 are isolated half-duplex differential line transceivers for TIA/EIA 485/422 applications.

These devices are ideal for long transmission lines since the ground loop is broken to allow for a much larger common-mode voltage range. The symmetrical isolation barrier of the device is tested to provide 2500 Vrms of isolation for 60s between the bus-line transceiver and the logic-level interface.

Any cabled I/O can be subjected to electrical noise transients from various sources. These noise transients can cause damage to the transceiver and/or near-by sensitive circuitry if they are of sufficient magnitude and duration. These isolated devices can significantly increase protection and reduce the risk of damage to expensive control circuits.

The ISO3080, SO3082, ISO3086 and ISO3088 are qualified for use from –40°C to 85°C.

Features

  • 4000-VPEAK Isolation, 560-Vpeak VIORM
    • UL 1577, IEC 60747-5-2 (VDE 0884, Rev. 2),
      IEC 61010-1, IEC 60950-1 and CSA Approved
  • Bus-Pin ESD Protection
    • 12 kV HBM Between Bus Pins and GND2
    • 6 kV HBM Between Bus Pins and GND1
  • 1/8 Unit Load – Up to 256 Nodes on a Bus
  • Meets or Exceeds TIA/EIA RS-485 Requirements
  • Signaling Rates up to 20 Mbps
  • Thermal Shutdown Protection
  • Low Bus Capacitance – 16 pF (Typ)
  • 50 kV/µs Typical Transient Immunity
  • Fail-safe Receiver for Bus Open, Short, Idle
  • 3.3-V Inputs are 5-V Tolerant
  • APPLICATIONS
    • Security Systems
    • Chemical Production
    • Factory Automation
    • Motor/Motion Control
    • HVAC and Building Automation Networks
    • Networked Security Stations

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Parametrics Compare all products in Isolated RS-485 Transceivers

 
UL 1577 Isolation Voltage (Single) (Vrms)
VDE DIN EN 60747-5-5 Transient Overvoltage Rating (Vpk)
VDE DIN EN 60747-5-5 Surge Voltage Rating (Vpk)
VDE DIN EN 60747-5-5 Working Voltage Rating (Vpk)
CSA Isolation Rating (Vrms)
CSA 60950-1 Basic Working (Vrms)
Integrated Transformer Driver
Duplex
Datarate (Mbps)
Number of Nodes
ESD (kV)
Fail Safe
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
ISO3082 ISO15 ISO3080 ISO3086 ISO3088 ISO35
2.5     2.5     2.5     2.5     2.5     2.5    
4     4     4     4     4     4    
4     4     4     4     4     4    
0.056     0.056     0.056     0.056     0.056     0.056    
2800     2500     2800     2800     2800     2500    
395     280     395     395     395     280    
No     No     No     No     No     No    
Half     Half     Full     Full     Half     Full    
0.2     1     0.2     20     20     1    
256     256     256     256     256     256    
16     16     16     16     16     16    
Idle
Open
Short    
Idle
Open
Short    
Idle
Open
Short    
Idle
Open
Short    
Idle
Open
Short    
Idle
Open
Short    
-40 to 85     -40 to 85
-55 to 125    
-40 to 85     -40 to 85     -40 to 85     -40 to 85
-55 to 125    
16SOIC     16SOIC     16SOIC     16SOIC     16SOIC     16SOIC    
2.60 | 1ku     3.00 | 1ku     2.60 | 1ku     3.00 | 1ku     3.00 | 1ku     3.00 | 1ku    

Companion parts

Part # Name Product Family Comments
SN6501   Transformer Driver for Isolated Power Supplies   CONVERTER (INTEGRATED SWITCH) - ISOLATED DC/DC CONVERTER    Transformer driver for generating isolated secondary power supply  
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