SI8421BB-C-IS Silicon Laboratories Inc, SI8421BB-C-IS Datasheet - Page 22

• Manufacturer Part Number: SI8421BB-C-IS
• Manufacturer: Silicon Laboratories Inc

Specifications of SI8421BB-C-IS

• Operating Supply Voltage (typ): 3.3/5V
• Lead Free Status / RoHS Status: Compliant

Si8410/20/21
4. Errata and Design Migration Guidelines (Revision C Only)
The following errata apply to Revision C devices only. See "6. Ordering Guide" on page 24 for more details. No
errata exist for Revision D devices.
4.1. Power Supply Bypass Capacitors (Revision C Only)
When using the ISOpro 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.
4.1.1. Resolution
This issue has been corrected with Revision D of the device. Refer to “6. Ordering Guide” for current ordering
information.
4.2. Latch Up Immunity (Revision C Only)
ISOpro latch up immunity generally exceeds ± 200 mA per pin. Exceptions: Certain pins provide < 100 mA of latch-
up immunity. To increase latch-up immunity on these pins, 100  of equivalent resistance must be included in
series with all of the pins listed in Table 14. The 100  equivalent resistance can be comprised of the source
driver's output resistance and a series termination resistor. The Si8410 is not affected by the latch up immunity
issue described above.
4.2.1. Resolution
This issue has been corrected with Revision D of the device. Refer to “6. Ordering Guide” for current ordering
information.
22
Affected Ordering Part Numbers*
SI8420SV-C-IS, SI8421SV-C-IS
*Note: "SV" = Speed Grade/Isolation Rating (AA, AB, BA, BB).
Table 14. Affected Ordering Part Numbers (Revision C Only)
Revision
Device
C
Rev. 1.2
Pin#
3
7
Name
A2
B1
Input or Output
Pin Type
Output