SI8451BA-B-IS1 Silicon Laboratories Inc, SI8451BA-B-IS1 Datasheet - Page 26

• Manufacturer Part Number: SI8451BA-B-IS1
• Description: IC ISOLATOR 5CH 5.5V 16-SOIC
• Manufacturer: Silicon Laboratories Inc
• Series: ISOpror

Specifications of SI8451BA-B-IS1

• Number Of Channels: 5
• Package / Case: 16-SOIC (3.9mm Width)
• Inputs - Side 1/side 2: 4/1
• Isolation Rating: 1000Vrms
• Voltage - Supply: 2.7 V ~ 5.5 V
• Data Rate: 150Mbps
• Propagation Delay: 6ns
• Output Type: Tri-State
• Operating Temperature: -40°C ~ 125°C
• Mounting Style: SMD/SMT
• Propagation Delay Time: 6 ns
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Supply Current: 6 mA
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

Si8450/51/52/55
3. Errata and Design Migration Guidelines
The following errata apply to Revision A devices only. See "6. Ordering Guide" on page 29 for more details. No
errata exist for Revision B devices.
3.1. Enable Pin Causes Outputs to Go Low (Revision A Only)
When using the enable pin (EN1, EN2) function on the ISOpro 5-channel (Si8450/1/2) isolators, the corresponding
output pin states (pin = An, Bn, where n can be 1…5) 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) and 4-channel
(Si8440/1/2) 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 A of the ISOpro
devices. Revision B 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 more information.
3.2. Power Supply Bypass Capacitors (Revision A and Revision B)
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 B of the device. Refer to "6. Ordering Guide" on page 29 for more
information.
3.3. Latch Up Immunity (Revision A 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.
3.3.1. Resolution
This issue has been corrected with Revision B of the device. Refer to the Ordering Guide for more information.
26
Affected Ordering Part Numbers*
SI8450SV-A-IS/IS1, SI8451SV-A-IS/IS1,
SI8452SV-A-IS/IS1
SI8455SV-A-IS/IS1
*Note: SV = Speed Grade/Isolation Rating (AA, AB, BA, BB).
Table 14. Affected Ordering Part Numbers (Revision A Only)
Revision
Device
A
A
Rev. 1.3
Pin#
10
14
14
2
6
2
6
Name
EN2
A1
A5
B2
A1
A5
B2
Input or Output
Pin Type
Output
Output
Input
Input
Input
Input