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  1.   1
  2.   Abstract
  3. 1Isolator Construction
  4. 2Switching Performance
  5. 3Isolator Lifetime Through TDDB Test
  6. 4Solution Size
  7. 5Aging and Reliability
  8. 6Common-Mode Transient Immunity (CMTI)
  9. 7Optocoupler Current Input vs Digital Isolator CMOS Voltage Input
  10. 8Conclusion
  11. 9References

8 Conclusion

Optocouplers were one of the first isolators to be used in various applications for data isolation. They had been dominant in the industry for a long time, but are now seeing a steep decline in their popularity and acceptance due to their inability to meet present time performance needs. Digital isolators are fast replacing optocouplers across applications, and TI digital isolators are one of the high-performance isolators filling the void left out by the optocouplers in meeting current industry performance needs.

Various performance parameters of TI digital isolators have been looked at and are compared to general-purpose and high-speed optocouplers. Some of the topics discussed include isolator construction, TDDB lifetime, switching performance, solution size, aging and reliability, CMTI and CMOS voltage inputs. It is observed that TI digital isolators offer superior performance over optocouplers in all of these aspects and are fast replacing the legacy optocouplers.