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Si840x
5. Errata and Design Migration Guidelines
The following errata apply to Revision A devices only. See "7.Ordering Guide" on page 25 for more details. No
errata exist for Revision B devices.
5.1. Power Supply Bypass Capacitors (Revision A and Revision B)
When using the Si840x isolators with power supplies > 4.5 V, sufficient VDD bypass capacitors must be present on
both the VDD1 and VDD2 pins to ensure the VDD rise time is less than 0.5 V/μs (which is > 9 μs for a > 4.5 V
supply). Although rise time is power supply dependent, > 1 μF capacitors are required on both power supply pins
(VDD1, VDD2) of the isolator device.
5.1.1. Resolution
For recommendations on resolving this issue, see "3.3.1.Supply Bypass" on page 14. Additionally, refer to
"7.Ordering Guide" on page 25 for current ordering information.
22
Rev. 1.6
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