SI8435BB-C-IS1R Silicon Laboratories Inc, SI8435BB-C-IS1R Datasheet - Page 24
SI8435BB-C-IS1R
Manufacturer Part Number
SI8435BB-C-IS1R
Description
IC ISOLATOR DGTL 3CH 16SOIC
Manufacturer
Silicon Laboratories Inc
Series
ISOpror
Datasheet
1.SI8431AB-D-IS.pdf
(36 pages)
Specifications of SI8435BB-C-IS1R
Inputs - Side 1/side 2
3/0
Number Of Channels
3
Isolation Rating
2500Vrms
Voltage - Supply
2.7 V ~ 5.5 V
Data Rate
150Mbps
Propagation Delay
6ns
Output Type
Tri-State
Package / Case
16-SOIC (3.9mm Width)
Operating Temperature
-40°C ~ 125°C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Si8430/31/35
3. Errata and Design Migration Guidelines
The following errata apply to Revision C devices only. See "5. Ordering Guide" on page 26 for more details. No
errata exist for Revision D devices.
3.1. Enable Pin Causes Outputs to Go Low (Revision C Only)
When using the enable pin (EN1, EN2) function on the ISOpro 3-channel (Si8430/1), the corresponding output pin
states (pin = An, Bn, where n can be 1…3) are driven to a logic low (to ground) when the enable pin is disabled
(EN1 or EN2 = 0). This functionality is different from the legacy 3-channel (Si8430/1) isolators. On those devices,
the isolator outputs go into a high-impedance state (Hi-Z) when the enable pin is disabled (EN1 = 0 or EN2 = 0).
3.1.1. Resolution
The enable pin functionality causing the outputs to go low is supported in production for Revision C of the ISOpro
devices. Revision D corrects the enable pin functionality (i.e., the outputs will go into the high-impedance state to
match the legacy isolator products). Refer to the Ordering Guide sections of the data sheet(s) for current ordering
information.
3.2. Power Supply Bypass Capacitors (Revision C and Revision D)
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.
3.2.1. Resolution
This issue has been corrected with Revision D of the device. Refer to “5. Ordering Guide” for current ordering
information.
3.3. 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 Si8431 is not affected when using power supply
voltages (VDD1 and VDD2) < 3.5 V.
3.3.1. Resolution
This issue has been corrected with Revision D of the device. Refer to “5. Ordering Guide” for current ordering
information.
24
Affected Ordering Part Numbers*
SI8430SV-C-IS/IS1, SI8431SV-C-IS/IS1
SI8435SV-C-IS/IS1
*Note: "SV" = Speed Grade/Isolation Rating (AA, AB, BA, BB).
Table 14. Affected Ordering Part Numbers (Revision C Only)
Revision
Device
C
C
Rev. 1.3
Pin#
10
14
14
5
5
Name
EN2
A3
B1
A3
B1
Input or Output
Pin Type
Output
Output
Input
Input