SLVAFN4 October   2023 TCA9509 , TCA9517A

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Contrasting Setups of SVO Buffers
  6. 3Important Considerations When Using TCA9509
  7. 4Summary
  8. 5References

4 Summary

Both the TCA9517 and TCA9617 have the SVO feature on the B-side of the device. When these two devices with B-side connect, the VILC requirements of both devices are bound to be violated. This leads to a bus lock up, potentially causing oscillations as shown in Figure 2-2. System designers can use the TCA9509 to fix existing violations of the Static Voltage Offset rules where two buffers are interfaced together with SVO since the VILC requirement for TCA9509 is on the A-side. By using the TCA9509 in place of the second TCA9517, the SVO buffer B-side to B-side configuration is resolved.