SI8450AB-B-IS1 Silicon Laboratories Inc, SI8450AB-B-IS1 Datasheet - Page 26
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SI8450AB-B-IS1
Manufacturer Part Number
SI8450AB-B-IS1
Description
IC ISOLATOR 5CH 5.5V 16-SOIC
Manufacturer
Silicon Laboratories Inc
Series
ISOpror
Datasheet
1.SI8452AA-A-IS1R.pdf
(40 pages)
Specifications of SI8450AB-B-IS1
Number Of Channels
5
Package / Case
16-SOIC (3.9mm Width)
Inputs - Side 1/side 2
5/0
Isolation Rating
2500Vrms
Voltage - Supply
2.7 V ~ 5.5 V
Data Rate
1Mbps
Propagation Delay
35ns
Output Type
Tri-State
Operating Temperature
-40°C ~ 125°C
Mounting Style
SMD/SMT
Propagation Delay Time
35 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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
SI8450AB-B-IS1
Manufacturer:
Silicon Labs
Quantity:
135
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