ISO35 Isolated 3.3-V Full-Duplex RS-485 Transceivers | TI.com

ISO35 (ACTIVE) Isolated 3.3-V Full-Duplex RS-485 Transceivers

 

Recommended alternative parts

  • ISO1412  - The device has the SAME FUNCTIONALITY and PINOUT as the compared device but is NOT an exact equivalent.   This updated device has a higher isolation rating, increased transceiver EMC protection, wider supply range and stronger CMTI

Description

The ISO15 is an isolated half-duplex differential line transceiver while the ISO35 is an isolated full-duplex differential line driver and receiver for TIA/EIA 485/422 applications. The ISO15M and ISO35M have extended ambient temperature ratings of –55°C to 125°C while the ISO15 and ISO35 are specified over –40°C to 85°C.

These devices are ideal for long transmission lines because the ground loop is broken to allow for a much larger common-mode voltage range. The symmetrical barrier of the device is tested to provide isolatlion of 4000 VPK per VDE and 2500 VRMS per UL and CSA 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 nearby 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.

Features

  • Meets or Exceeds TIA/EIA RS-485 Requirements
  • 1/8 Unit Load – Up to 256 Nodes on a Bus
  • Signaling Rates up to 1 Mbps
  • Thermal Shutdown Protection
  • Low Bus Capacitance – 16 pF (Typical)
  • 50 kV/µs Typical Transient Immunity
  • Fail-safe Receiver for Bus Open, Short, Idle
  • 3.3-V Inputs are 5-V Tolerant
  • Safety and Regulatory Approvals
    • 4000-VPK VIOTM, 560-VPK VIORM per DIN V VDE
      V 0884-10 (VDE V 0884-10):2006-12 and DIN EN 61010-1
    • 2500 VRMS Isolation Rating per UL 1577
    • 2500 VRMS Isolation Rating per CSA CA5A and IEC 60950-1
  • APPLICATIONS
    • Security Systems
    • Chemical Production
    • Factory Automation
    • Motor and Motion Control
    • HVAC and Building Automation Networks
    • Networked Security Stations

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Parametrics

Compare all products in Isolated RS-485 transceivers Email Download to Excel
Part number Order Isolation rating (Vrms) Surge voltage capability (Vpk) Data rate (Max) (Mbps) Duplex Integrated transformer driver Number of nodes HBM ESD (kV) Fail safe Operating temperature range (C)
ISO35 Order now 2500     4000     1     Full     No     256     16     Idle
Open
Short    
-40 to 85
-55 to 125    
ISO15 Order now 2500     4000     1     Half     No     256     16     Idle
Open
Short    
-40 to 85
-55 to 125    
ISO3080 Order now 2500     4000     0.2     Full     No     256     12     Idle
Open
Short    
-40 to 85    
ISO3082 Order now 2500     4000     0.2     Half     No     256     12     Idle
Open
Short    
-40 to 85    
ISO3086 Order now 2500     4000     20     Full     No     256     12     Idle
Open
Short    
-40 to 85    
ISO3088 Order now 2500     4000     20     Half     No     256     12     Idle
Open
Short    
-40 to 85