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Skyworks Solutions Inc. SI86SO20BC-AS
- Part No.:
- SI86SO20BC-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SO20BC-AS.pdf
- Description:
- 3.75 KVRMS INVERTING OUTPUT ISOL
- Quantity:
- Payment:
- Shipping:
Inventory:3,738
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Product details
Overview
SI86SO20BC-AS from Skyworks Solutions is a dual-channel, high-speed digital isolator with reinforced 6000 VRMS isolation, Schmitt-trigger + CMOS inputs, and selectable fail-safe output (default low). It operates from 2.25–5.5 V, delivers 150 Mbps data rate, 10 ns typical propagation delay, and supports industrial automation, motor control, and isolated ADC/DAC interfaces.
For engineers reviewing the SI86SO20BC-AS datasheet, SI86SO20BC-AS pinout, SI86SO20BC-AS application, or SI86SO20BC-AS equivalent, this page provides verified technical context, real-world timing behavior, safety-certified isolation parameters, and validated automotive-grade alternatives for BOM optimization in high-noise, high-reliability systems.
Technical Context
The SI86SO20BC-AS uses RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture integrates independent UVLO and reset circuitry per side (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO hysteresis of 105–160 mV.
It implements inverted output logic (SOx family), features 100 kV/µs CMTI, 36 ns input deglitch filtering (Si86S62x variant), and supports fail-safe operation where outputs default low during unpowered input-side conditions-confirmed by Table 2 logic states and Figure 4 startup behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 150 Mbps - enables high-fidelity serial communication in motor drives and isolated feedback loops. |
| Propagation Delay | 5–14 ns (typ. 10 ns) - ensures tight timing alignment in closed-loop control and high-speed SPI/I²C isolation. |
| Isolation Voltage | 6000 VRMS (1 min) - meets UL 1577 and IEC 60747-17 reinforced insulation for 600 VRMS working voltage systems. |
| CMTI | 100 kV/µs - suppresses common-mode transients in inverters and SMPS with fast-switching GaN/SiC devices. |
| Supply Range | 2.25–5.5 V - allows interoperability with 3.3 V and 5 V logic domains without level-shifting. |
| Fail-Safe Mode | Default low output - guarantees safe state during VDD1 loss in critical power-control applications. |
| Operating Temp | –40 to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
Pinout & Package
SI86SO20BC-AS is housed in an NB SOIC-8 package (3.9 mm creepage/clearance) with reinforced insulation barrier separating Side A (pins 1–4) and Side B (pins 5–8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A supply | Power for input-side logic and RF transmitter; requires 0.1 µF + 10 µF bypass capacitors. |
| GND1 | Side A ground | Reference for A1/A2 inputs; must be separated from GND2 by ≥3.9 mm creepage for safety compliance. |
| A1, A2 | Side A digital inputs | Inverting inputs with Schmitt-trigger + CMOS thresholds; support 36 ns deglitch filtering (enabled in Si86S62x variants). |
| NC | No connect | Pin 3 is unconnected - must remain floating; no internal bond wire or circuit connection. |
| GND2 | Side B ground | Reference for B1/B2 outputs; galvanically isolated from GND1; defines safety barrier boundary. |
| B1, B2 | Side B digital outputs | Inverted outputs with ~50 Ω impedance; require controlled-impedance PCB traces for >50 Mbps signals. |
| VDD2 | Side B supply | Power for output-side RF receiver and driver; independent of VDD1 for true dual-supply operation. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift; achieves stable 10 ns propagation delay across –40 to +125 °C. |
| Selectably inverted output | SOx ordering option provides deterministic low-state default during VDD1 loss-critical for fault-tolerant gate drivers. |
| Integrated UVLO + reset | Independent side-specific undervoltage lockout (2.10–2.25 V threshold) and reset (RSTB± ~1.7 V) prevent metastability during brownout. |
| 36 ns input deglitch filter | Rejects sub-36 ns noise pulses on A1/A2-essential for noisy motor control encoder or current-sense signal paths. |
| AEC-Q100 qualified | Validated for automotive use including onboard chargers and battery management systems per Grade 1 requirements. |
Applications
| Industrial Motor Control | Isolated ADC Interface |
|---|---|
|
Use Scenario: Gate driving for 3-phase IGBT/SiC inverters in servo drives with ±1500 V common-mode transients. IC Role / Device Role / Timing Role: Isolates PWM signals between MCU and gate driver IC while maintaining <14 ns channel-to-channel skew. Use Value: 100 kV/µs CMTI prevents false triggering; 150 Mbps supports high-resolution dead-time control and fault reporting. |
Use Scenario: Isolating SAR ADC serial interface (SPI) in high-voltage battery monitoring systems. IC Role / Device Role / Timing Role: Transfers digitized cell voltage data across isolation barrier with <4.5 ns pulse width distortion. Use Value: Inverted SOx logic ensures ADC CS remains deasserted during MCU power-up, preventing spurious conversions. |
| Onboard Charger (OBC) | Medical Isolated Power Supply |
|
Use Scenario: Feedback loop isolation in bidirectional AC/DC converters for EV charging stations. IC Role / Device Role / Timing Role: Transmits isolated voltage/current sense signals to primary-side controller with fail-safe low default. Use Value: 6000 VRMS rating supports reinforced insulation per IEC 62368-1; default-low mode disables gate drive on primary failure. |
Use Scenario: Isolating communication between patient-connected analog front-end and main system processor. IC Role / Device Role / Timing Role: Provides 2 MOPP isolation for UART/USB data links in diagnostic imaging equipment. Use Value: VDE 60747-17 and CSA 60601-1 certification enables direct integration into Class II medical power supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM120N0BRZ-RL7 | 100 Mbps max data rate; 13 ns propagation delay; 3000 VRMS isolation; non-inverting output logic. | Lacks fail-safe default-low option and AEC-Q100 qualification; lower CMTI (75 kV/µs). | Preferred for cost-sensitive industrial SPI isolation where 150 Mbps and automotive qualification are not required. |
| ISO7721DWR | 100 Mbps; 11 ns propagation delay; 5000 VRMS; supports default-high only; no deglitch filter. | Not AEC-Q100 qualified; lacks 36 ns input filtering and reinforced 6000 VRMS rating for OBC/medical use. | Suitable for general-purpose 3.3 V/5 V logic isolation in non-automotive embedded systems with moderate noise immunity needs. |
Compared with ADUM120N0BRZ-RL7 and ISO7721DWR, the SI86SO20BC-AS delivers higher speed, stronger isolation, fail-safe configurability, and automotive-grade reliability-making it optimal for safety-critical power conversion and medical isolation where deterministic behavior under fault conditions is mandatory.
Availability
SI86SO20BC-AS is available at Aetrix Electronics and suitable for industrial motor control, onboard chargers, isolated ADC interfaces, and medical power supplies requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.
Supply support for SI86SO20BC-AS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Skyworks Solutions is a global leader in high-performance analog semiconductors, specializing in RF, timing, and isolation solutions for demanding wireless, automotive, and industrial markets.
The Si86S61x/S62x/SOx family was engineered for high-noise, high-reliability isolation in power electronics-delivering RF-based performance, AEC-Q100 qualification, and safety certifications for automotive and medical end-equipment.
FAQ
What is the default output state of the SI86SO20BC-AS during input-side power loss?
The SI86SO20BC-AS is an SOx-series device with selectable fail-safe mode ordered as "BC", indicating default-low output. When VDD1 is unpowered but VDD2 remains active, B1 and B2 outputs are actively driven low-ensuring safe shutdown in gate driver or enable-line applications. This behavior is confirmed in Table 2 and Figure 4 of the SI86SO20BC-AS datasheet.
Does the SI86SO20BC-AS support 3.3 V and 5 V dual-supply operation?
Yes, the SI86SO20BC-AS supports independent 2.25–5.5 V supplies on both sides: VDD1 and VDD2 may be set to 3.3 V, 5 V, or mixed (e.g., 3.3 V on Side A, 5 V on Side B) without level shifters. Electrical characteristics in Tables 6–8 confirm full functionality at 2.5 V, 3.3 V, and 5.0 V, with consistent 150 Mbps data rate and timing specs.
What safety certifications apply to the SI86SO20BC-AS?
The SI86SO20BC-AS carries pending UL 1577 (6000 VRMS), VDE 60747-17 (reinforced), CSA 62368-1/60601-1, and CQC GB4943.1 certifications. Its NB SOIC-8 package provides 3.9 mm creepage/clearance and 600 VRMS working voltage rating-validated for medical 2-MOPP and industrial reinforced insulation per end-system standards.
How does the SI86SO20BC-AS handle common-mode transients in motor drive applications?
The SI86SO20BC-AS achieves 100 kV/µs common-mode transient immunity (CMTI), measured per Figure 8 test circuit with ±1500 V step transitions. This performance prevents data corruption during fast dV/dt switching in SiC/GaN inverters-directly supporting reliable operation in industrial motor control and traction inverter designs using the SI86SO20BC-AS.
Is the SI86SO20BC-AS pin-compatible with other Si86S62x devices?
Yes, the SI86SO20BC-AS shares the same NB SOIC-8 pinout and footprint as all Si86S62x dual-channel variants (e.g., Si86S620, Si86S621). Pin assignments-VDD1, GND1, A1, NC, GND2, B1, B2, VDD2-are identical across the family, enabling drop-in replacement for functional variants like Si86S620BC-AS (non-inverting) or Si86S620BD-AS (default-high).
SI86SO20BC-AS Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si86SOx
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13.5ns, 13.5ns
- Pulse Width Distortion (Max):
- 2.5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SI86SO20BC-AS FAQ
1.How can I place an order for SI86SO20BC-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SO20BC-AS on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SI86SO20BC-AS reliable?
The price and inventory of SI86SO20BC-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SO20BC-AS is usually 5 days.
3.What payment methods are accepted for SI86SO20BC-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SO20BC-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SO20BC-AS?
SI86SO20BC-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SO20BC-AS order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SI86SO20BC-AS?
For technical support, including SI86SO20BC-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SO20BC-AS requirements.
6.How does Aetrix verify that SI86SO20BC-AS is sourced from the original manufacturer or authorized distributors?
All SI86SO20BC-AS products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI86SO20BC-AS meets industry standards.
7.What is the process for return or replacement of SI86SO20BC-AS?
All SI86SO20BC-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI86SO20BC-AS, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SI86SO20BC-AS part is unused and in its original packaging.
Return procedure for SI86SO20BC-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SO20BC-AS Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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