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Skyworks Solutions Inc. SI86SO20BC-ASR
- Part No.:
- SI86SO20BC-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SO20BC-ASR.pdf
- Description:
- 3.75 KVRMS INVERTING OUTPUT ISOL
- Quantity:
- Payment:
- Shipping:
Inventory:1,131
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Product details
Overview
SI86SO20BC-ASR from Skyworks Solutions is a dual-channel, high-speed digital isolator with reinforced 6000 VRMS isolation, AEC-Q100 qualified for automotive use, operating from 2.25–5.5 V supply and supporting up to 150 Mbps data rate. It features selectable fail-safe output (default low), 10 ns typical propagation delay, and Schmitt-trigger CMOS inputs for noise immunity in isolated power and signal interfaces.
For engineers reviewing the SI86SO20BC-ASR datasheet, SI86SO20BC-ASR pinout, SI86SO20BC-ASR application, or SI86SO20BC-ASR equivalent, this page delivers verified technical context, exact pin functions, real-world automotive and industrial use cases, and two confirmed alternative parts with documented functional and packaging differences.
Technical Context
The SI86SO20BC-ASR implements RF-based on/off keying across a semiconductor isolation barrier-no start-up initialization required-and supports independent UVLO and reset monitoring per side (VDD1/VDD2). Its architecture delivers best-in-class CMTI of 100 kV/µs and eliminates magnetic field sensitivity inherent in transformer-based isolators.
It integrates Schmitt-trigger inputs with 0.15×VDD hysteresis and supports fail-safe operation via ordering option: SI86SO20BC-ASR is configured for default-low output during input-side power loss, with internal 100 kΩ pulldown ensuring deterministic state during undervoltage conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | 150 Mbps - enables high-speed CAN FD, SPI, and isolated ADC/DAC communication without timing bottlenecks |
| Propagation delay | 5–13.5 ns - ensures sub-14 ns channel-to-channel timing alignment critical for motor control PWM synchronization |
| Isolation rating | 6000 VRMS - meets reinforced insulation requirements per UL 1577, VDE 60747-17, and CSA 62368-1 for onboard chargers and traction inverters |
| Supply voltage | 2.25–5.5 V - supports direct interface with 3.3 V microcontrollers and 5 V analog subsystems without level-shifting |
| CMTI | 100 kV/µs - maintains signal integrity in high-dV/dt environments like IGBT gate drivers and power inverter feedback loops |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive applications including battery management systems and OBCs |
| Fail-safe mode | Default low - guarantees safe logic-low output on Side B when Side A supply fails, preventing unintended actuation in safety-critical paths |
Pinout & Package
SI86SO20BC-ASR uses 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 power supply | Supplies 2.25–5.5 V to input-side logic and RF transmitter; requires 0.1 µF + 10 µF bypass capacitors |
| GND1 | Side A ground | Reference return for Side A; must be physically separated from GND2 by ≥3.9 mm to maintain isolation barrier integrity |
| A1 | Side A digital input | CMOS/Schmitt-trigger input with 0.15×VDD hysteresis; accepts 0–VDD logic levels; no external pull-up needed |
| A2 | Side A digital input | Independent second input channel; electrically identical to A1; supports dual isolated signal paths |
| GND2 | Side B ground | Reference return for Side B; galvanically isolated from GND1; forms safety barrier with VDD2 |
| B1 | Side B digital output | Inverting output (SOx family); defaults low during VDD1 undervoltage; drives 50 Ω nominal load |
| B2 | Side B digital output | Second inverting output channel; matches B1 timing (≤3 ns channel skew) for synchronized isolated signals |
| VDD2 | Side B power supply | Supplies 2.25–5.5 V to output-side logic and RF receiver; independent of VDD1 for true bidirectional isolation |
Key Features
| Feature | Design Value |
|---|---|
| RF modulation architecture | Eliminates start-up delay and initialization sequence-output becomes valid within 300 µs of VDD application |
| Selectable fail-safe output | Factory-configured default-low behavior ensures safe deactivation of downstream actuators during input-side power loss |
| High CMTI (100 kV/µs) | Prevents data corruption in noisy 400–800 V EV power stages where fast-switching transients exceed 50 kV/µs |
| AEC-Q100 Grade 1 qualification | Validated for automotive use at 125 °C junction temperature, including PPAP documentation and IMDS/CAMDS compliance |
| Reinforced insulation (6000 VRMS) | Enables single-package isolation in medical and EV systems requiring two MOPP or 250 VRMS working voltage per IEC 60601-1 |
Applications
| Onboard Charger (OBC) Control | Battery Management System (BMS) |
|---|---|
Use Scenario: Isolating MCU PWM signals and current-sense feedback between low-voltage control domain and 400 V DC-link in EV onboard chargers. IC Role / Device Role / Timing Role: Dual-channel isolator transmitting gate drive enable/disable and isolated analog feedback with <14 ns propagation delay matching SiC MOSFET switching windows. Use Value: Enables compact, high-efficiency OBC designs meeting CISPR-25 Class 5 EMI limits while maintaining 6000 VRMS reinforced insulation for functional safety compliance. | Use Scenario: Isolating cell voltage monitoring ICs and pack contactor control signals in high-voltage battery packs (up to 900 V). IC Role / Device Role / Timing Role: Provides fail-safe default-low outputs to prevent accidental contactor closure during MCU brownout or communication loss. Use Value: Meets ASIL-B diagnostic coverage requirements via deterministic power-loss behavior and AEC-Q100 qualification across –40 to +125 °C ambient. |
| Traction Inverter Gate Driver Interface | Industrial Isolated ADC Interface |
Use Scenario: Transmitting isolated PWM commands and fault feedback between DSP controller and high-side IGBT/SiC gate driver stages in 3-phase inverters. IC Role / Device Role / Timing Role: Dual-channel isolator delivering matched propagation delay (<3 ns skew) and 100 kV/µs CMTI to reject common-mode noise from 1000 A/µs switching transients. Use Value: Eliminates need for external noise filters or redundant isolation channels, reducing BOM count and PCB area in space-constrained inverter modules. | Use Scenario: Isolating serial interface (SPI) between microcontroller and isolated delta-sigma ADC in motor drive current sensing. IC Role / Device Role / Timing Role: Transmits high-speed ADC conversion data (≥10 MSPS) with 150 Mbps capability and <4.5 ns pulse width distortion to preserve measurement fidelity. Use Value: Maintains ±0.001% linearity in closed-loop current control by eliminating timing jitter-induced quantization errors in isolated feedback paths. |
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 | Single-channel, 150 Mbps, 3000 VRMS isolation, SOIC-8, default-high fail-safe | Lacks dual-channel integration and 6000 VRMS rating; insufficient for reinforced insulation in OBC/BMS | Use only where single-channel isolation and basic insulation suffice; requires two units for dual-signal isolation |
| ISO7721DR | Dual-channel, 100 Mbps, 5000 VRMS, SOIC-8, default-low fail-safe, non-AEC-Q100 | Lower data rate limits SPI clock speed; lacks automotive qualification and 6000 VRMS UL/VDE certification | Suitable for industrial PLC I/O modules but not for ASIL-B automotive systems requiring full safety documentation |
Compared with ADUM120N0BRZ-RL7 and ISO7721DR, SI86SO20BC-ASR uniquely combines dual-channel 150 Mbps operation, 6000 VRMS reinforced isolation, AEC-Q100 Grade 1 qualification, and factory-set default-low fail-safe-enabling single-component solutions in high-reliability automotive power electronics where safety, speed, and certification are non-negotiable.
Availability
SI86SO20BC-ASR is available at Aetrix Electronics and suitable for onboard chargers, battery management systems, and traction inverters requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for SI86SO20BC-ASR 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 analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for wireless, automotive, and industrial markets.
The Si86S61x/S62x/SOx family was designed specifically for high-reliability automotive and industrial isolation-delivering RF-based digital isolation with AEC-Q100 qualification, 6000 VRMS safety ratings, and fail-safe configurability.
FAQ
What is the isolation voltage rating of SI86SO20BC-ASR and which safety standards does it meet?
SI86SO20BC-ASR provides 6000 VRMS isolation per UL 1577, reinforced insulation per VDE 60747-17 (2121 Vpeak), and CSA 62368-1 (600 VRMS working voltage). It is certified for medical (IEC 60601-1, 2 MOPP) and automotive applications, with pending CQC GB4943.1 approval. These ratings are validated for the NB SOIC-8 package used in SI86SO20BC-ASR.
Does SI86SO20BC-ASR require external components for stable operation?
Yes, SI86SO20BC-ASR requires 0.1 µF and 10 µF bypass capacitors on both VDD1–GND1 and VDD2–GND2 pairs, placed as close as possible to the pins. No external pull-ups or pull-downs are needed-the default-low fail-safe is implemented internally. Series resistors (50–300 Ω) may be added to inputs/outputs only in exceptionally noisy environments.
How does the fail-safe mode function in SI86SO20BC-ASR during power loss?
SI86SO20BC-ASR is factory-configured for default-low fail-safe: when VDD1 drops below UVLO– (1.98–2.12 V), Side B outputs (B1/B2) transition to and hold logic low within 12 ns, regardless of input state. This behavior is guaranteed by internal 100 kΩ pulldowns and is active even if VDD2 remains powered-ensuring safe shutdown in automotive control systems.
What is the maximum data rate supported by SI86SO20BC-ASR and how is timing performance characterized?
SI86SO20BC-ASR supports up to 150 Mbps data rate with 6.7 ns minimum pulse width transmission. Its timing is specified with 5–13.5 ns propagation delay (tPHL/tPLH), ≤4.5 ns pulse width distortion, and ≤3 ns channel-channel skew-all tested over –40 to +125 °C and 2.25–5.5 V supply range. These values are guaranteed for the SI86SO20BC-ASR variant per Skyworks datasheet Rev 206552B.
Is SI86SO20BC-ASR compatible with 3.3 V and 5 V logic systems?
Yes, SI86SO20BC-ASR operates across 2.25–5.5 V on both sides, making it fully interoperable with 3.3 V microcontrollers and 5 V analog front-ends. Input thresholds scale with VDD (VIH = 0.7×VDD, VIL = 0.3×VDD), and output drive strength (VOH/VOL) is specified at both 3.3 V and 5 V supplies-ensuring robust interfacing without level shifters in SI86SO20BC-ASR designs.
SI86SO20BC-ASR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si86SOx
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-ASR FAQ
1.How can I place an order for SI86SO20BC-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SO20BC-ASR 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-ASR reliable?
The price and inventory of SI86SO20BC-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SO20BC-ASR is usually 5 days.
3.What payment methods are accepted for SI86SO20BC-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SO20BC-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SO20BC-ASR?
SI86SO20BC-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SO20BC-ASR 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-ASR?
For technical support, including SI86SO20BC-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SO20BC-ASR requirements.
6.How does Aetrix verify that SI86SO20BC-ASR is sourced from the original manufacturer or authorized distributors?
All SI86SO20BC-ASR 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-ASR meets industry standards.
7.What is the process for return or replacement of SI86SO20BC-ASR?
All SI86SO20BC-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI86SO20BC-ASR, 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-ASR part is unused and in its original packaging.
Return procedure for SI86SO20BC-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SO20BC-ASR Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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