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ISO7821LLS

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Dual-channel, 1/1, 150-Mbps, high-performance, reinforced isolated LVDS buffer

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Data sheet

ISO7821LLS

ACTIVE
Data sheet Order now

Product details

Rating Catalog Isolation rating Reinforced Number of channels 2 Forward/reverse channels 1/1 Data rate (max) (Mbps) 150 Working isolation voltage (VIOWM) (Vrms) 1500, 2000 Surge isolation voltage (VIOSM) (VPK) 12800 Transient isolation voltage (VIOTM) (VPK) 8000 Withstand isolation voltage (VISO) (Vrms) 5700 CMTI (min) (kV/µs) 100 Operating temperature range (°C) -55 to 125 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 3 Propagation delay time (typ) (µs) 0.017
Rating Catalog Isolation rating Reinforced Number of channels 2 Forward/reverse channels 1/1 Data rate (max) (Mbps) 150 Working isolation voltage (VIOWM) (Vrms) 1500, 2000 Surge isolation voltage (VIOSM) (VPK) 12800 Transient isolation voltage (VIOTM) (VPK) 8000 Withstand isolation voltage (VISO) (Vrms) 5700 CMTI (min) (kV/µs) 100 Operating temperature range (°C) -55 to 125 Supply voltage (max) (V) 5.5 Supply voltage (min) (V) 3 Propagation delay time (typ) (µs) 0.017
SOIC (DW) 16 106.09 mm² 10.3 x 10.3 SOIC (DWW) 16 177.675 mm² 10.3 x 17.25
  • Complies with TIA/EIA-644-A LVDS Standard
  • Signaling Rate: 50 Mbps to 150 Mbps
  • Optimized for DC-Balanced Data
  • Wide Supply Range: 3 V to 5.5 V
  • Wide Temperature Range: –55°C to 125°C
  • Low-Power Consumption, Typical 10.3 mA per Channel at 150 Mbps
  • Low Propagation Delay: 17 ns Typical
  • Industry leading CMTI(Min): ±100 kV/μs
  • Robust Electromagnetic Compatibility (EMC)
  • System-Level ESD, EFT, and Surge Immunity
  • Low Emissions
  • Isolation Barrier Life: > 40 Years
  • SOIC-16 Wide Body (DW) and Extra-Wide Body (DWW) Package Options
  • Isolation Surge Withstand Voltage 12800 VPK
  • Safety-Related Certifications:
    • 8000-VPK Reinforced Isolation per DIN V VDE V 0884–10 (VDE V 0884–10): 2006–12
    • 5700-VRMS 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

All trademarks are the property of their respective owners.

  • Complies with TIA/EIA-644-A LVDS Standard
  • Signaling Rate: 50 Mbps to 150 Mbps
  • Optimized for DC-Balanced Data
  • Wide Supply Range: 3 V to 5.5 V
  • Wide Temperature Range: –55°C to 125°C
  • Low-Power Consumption, Typical 10.3 mA per Channel at 150 Mbps
  • Low Propagation Delay: 17 ns Typical
  • Industry leading CMTI(Min): ±100 kV/μs
  • Robust Electromagnetic Compatibility (EMC)
  • System-Level ESD, EFT, and Surge Immunity
  • Low Emissions
  • Isolation Barrier Life: > 40 Years
  • SOIC-16 Wide Body (DW) and Extra-Wide Body (DWW) Package Options
  • Isolation Surge Withstand Voltage 12800 VPK
  • Safety-Related Certifications:
    • 8000-VPK Reinforced Isolation per DIN V VDE V 0884–10 (VDE V 0884–10): 2006–12
    • 5700-VRMS 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

All trademarks are the property of their respective owners.

The ISO7821LLS device is a high-performance, isolated dual-LVDS buffer with 8000-VPK 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 is achieved through an internal distortion correction scheme.

The 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.

The ISO7821LLS device is available in a 16-pin SOIC wide-body (DW) and extra-wide body (DWW) packages.

For all available packages, see the orderable addendum at the end of the data sheet.

The ISO7821LLS device is a high-performance, isolated dual-LVDS buffer with 8000-VPK 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 is achieved through an internal distortion correction scheme.

The 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.

The ISO7821LLS device is available in a 16-pin SOIC wide-body (DW) and extra-wide body (DWW) packages.

For all available packages, see the orderable addendum at the end of the data sheet.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet ISO7821LLS High-Performance, 8000-VPK Reinforced Isolated Dual-LVDS Buffer datasheet (Rev. A) PDF | HTML 13 Sep 2016
Certificate TUV Certificate for Isolation Devices (Rev. M) 07 May 2026
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. S) 07 May 2026
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AA) 10 Mar 2026
Certificate CQC Certificate for ISOxxDWx (Rev. K) 18 Aug 2025
Certificate CSA Certificate for ISO782xLLDWx 16 Mar 2023
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 16 Nov 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 11 Jun 2021
Analog Design Journal How to use isolation to improve ESD, EFT and surge immunity in industrial system 24 Jul 2017
Technical article How to design with isolated LVDS in your industrial system PDF | HTML 11 Jan 2017

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ISO7821LLSEVM — High-Performance Isolated Dual LVDS Bidirectional Buffer (for DC-Balanced Data Stream) EVM

The evaluation module, featuring Isolated Dual LVDS Buffer, has 100 ohms differential termination at input and output. It can also support accurate measurement of eye diagram and common mode termination at output.
User guide: PDF
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Simulation model

ISO7821LL IBIS MODEL

SLLM314.ZIP (34 KB) - IBIS Model
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SOIC (DW) 16 Ultra Librarian
SOIC (DWW) 16 Ultra Librarian
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