Texas Instruments ISO7821LLS Isolated Dual LVDS Buffer

Texas Instruments ISO7821LLS Isolated Dual LVDS Buffer is a high-performance, isolated dual-LVDS buffer with 8000VPK isolation voltage. This device provides high electromagnetic immunity and low emissions at low power consumption while isolating the LVDS bus signal. Each isolation channel has an LVDS receive and transmit buffer. Timing performance for the ISO7821LLS device is optimized for use with communication systems that use DC-balanced data streams which are achieved through an internal distortion correction scheme. The Texas Instruments ISO7821LLS device has one forward and one reverse-direction channel. Through innovative chip design and layout techniques, the electromagnetic compatibility of the ISO7821LLS device has been significantly enhanced to ease system-level ESD, EFT, surge, and emissions compliance.

Features

  • Complies with TIA/EIA-644-A LVDS standard
  • 50Mbps to 150Mbps signaling rate 
  • Optimized for DC-balanced data
  • 3V to 5.5V wide supply range 
  • –55°C to 125°C wide temperature range 
  • Low-power consumption, typical 10.3mA per channel at 150Mbps
  • 17ns typical low propagation delay 
  • ±100kV/μs industry-leading CMTI (min) 
  • Robust Electromagnetic Compatibility (EMC)
  • System-level ESD, EFT, and surge immunity
  • Low emissions
  • > 40 years isolation barrier life 
  • SOIC-16 wide-body (DW) and extra-wide body (DWW) package options
  • Isolation surge withstand voltage 12800VPK
  • Safety-related certifications
    • 8000VPK reinforced isolation per DIN V VDE V 0884–10 (VDE V 0884–10): 2006–12
    • 5700VRMS isolation for 1 minute per UL 1577
    • CSA component acceptance notice 5A, IEC 60950–1, and IEC 60601–1 end equipment standards
    • TUV certification per EN 61010-1 and EN 60950-1
    • CQC certification per GB4943.1–2011
    • All certifications are planned

Applications

  • Motor control
  • Test and measurement
  • Industrial automation
  • Medical equipment
  • Communication systems

Functional Block Diagram

Block Diagram - Texas Instruments ISO7821LLS Isolated Dual LVDS Buffer
Published: 2016-10-25 | Updated: 2022-03-11