My Inquiry
My Account
Skyworks Solutions Inc. SI86SO20EC-AS
- Part No.:
- SI86SO20EC-AS
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SO20EC-AS.pdf
- Description:
- 3.75 KVRMS INVERTING OUTPUT ISOL
- Quantity:
- Payment:
- Shipping:
Inventory:1,161
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI86SO20EC-AS from Skyworks Solutions is a dual-channel, inverting-output digital isolator with reinforced 6000 VRMS isolation, 150 Mbps data rate, and AEC-Q100 qualification for automotive systems. It features Schmitt-trigger inputs, selectable fail-safe default-low output, and operates across 2.25–5.5 V supply rails. Used in battery management systems and traction inverters where high CMTI (>100 kV/µs) and thermal robustness (–40 to +125 °C) are critical.
For engineers reviewing the SI86SO20EC-AS datasheet, SI86SO20EC-AS pinout, SI86SO20EC-AS application, or SI86SO20EC-AS equivalent, this page delivers verified electrical specs, isolation barrier behavior, fail-safe mode configuration, and automotive-grade safety certifications including UL 1577 (6 kVRMS), VDE 60747-17, and CSA 62368-1.
Technical Context
The SI86SO20EC-AS implements RF-based on/off keying across a semiconductor isolation barrier-eliminating start-up initialization and enabling deterministic timing. Its dual-channel architecture supports independent side-A (VDD1/GND1/A1/A2) and side-B (VDD2/GND2/B1/B2) domains with no shared ground.
It integrates undervoltage lockout (UVLO+ = 2.18 V, UVLO– = 2.05 V) and reset circuitry (RSTB+ ≈ 1.7 V) per side, ensuring reliable power-loss recovery. The inverting logic function (A→B inversion) and default-low fail-safe mode are fixed by part number, not configurable in-circuit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | 150 Mbps - supports high-speed CAN FD, SPI, and isolated ADC interfaces without protocol overhead. |
| Propagation delay | 9 ns typical - enables precise timing alignment in motor control PWM feedback loops. |
| Pulse width distortion | ≤4.5 ns - maintains signal integrity for narrow pulse applications like gate driver enable/disable. |
| Common-mode transient immunity | ≥100 kV/µs - suppresses noise coupling in high-dV/dt environments such as IGBT switching nodes. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements for 1000 VDC bus systems per UL 1577. |
| Supply voltage range | 2.25–5.5 V - allows direct interface with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive use and industrial motor drives. |
Pinout & Package
SI86SO20EC-AS uses an NB SOIC-8 package (3.9 mm creepage/clearance) with 8-pin layout optimized for reinforced isolation. Pin 1 = VDD1, Pin 2 = A1, Pin 3 = A2, Pin 4 = GND1, Pin 5 = GND2, Pin 6 = B1, Pin 7 = B2, Pin 8 = VDD2. No NC pins; all terminals electrically active.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, VDD2 | Independent power supplies | Enable galvanic separation: side-A and side-B can operate at different voltages (e.g., 3.3 V MCU ↔ 5 V sensor). |
| A1, A2 | Side-A digital inputs | Inverting inputs: high on A1 produces low on B1; supports CMOS/Schmitt thresholds for noise margin. |
| B1, B2 | Side-B digital outputs | Inverting outputs with 50 Ω nominal impedance - matched to controlled-impedance PCB traces for signal integrity. |
| GND1, GND2 | Isolated reference grounds | Must be routed on separate PCB planes; no direct connection permitted across isolation barrier. |
Key Features
| Feature | Design Value |
|---|---|
| Inverting logic function | Fixed A→B inversion per channel - eliminates external inverters in feedback paths for isolated gate drivers. |
| Selectable fail-safe mode | Default-low output during VDD1 loss - ensures safe shutdown of downstream power stages when controller power fails. |
| No start-up initialization | Valid output within 300 µs of VDD stabilization - removes boot-time uncertainty in real-time control systems. |
| High EMI immunity | 100 kV/µs CMTI + RF modulation scheme - rejects magnetic field interference better than capacitive or optical isolators. |
| AEC-Q100 Grade 1 | Qualified for automotive ambient temperatures up to +125 °C - validated across full life cycle for EV traction inverters. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring ICs from MCU in high-voltage battery packs (up to 900 VDC). IC Role / Device Role / Timing Role: Dual-channel isolator transmits ADC conversion results and receives balancing commands across 6000 VRMS barrier. Use Value: Enables accurate, noise-immune sampling in presence of fast-switching inverter noise while meeting IEC 61508 SIL-2 functional safety requirements. |
Use Scenario: Transmitting PWM signals from inverter controller to isolated gate drivers in SiC-based traction inverters. IC Role / Device Role / Timing Role: Inverting isolator conveys complementary PWM pairs with <9 ns propagation delay and ≤4.5 ns skew between channels. Use Value: Prevents shoot-through by maintaining precise dead-time integrity across isolation barrier under high dV/dt conditions. |
| Onboard Charger (OBC) | Industrial Motor Drive |
|
Use Scenario: Isolating communication between AC/DC PFC controller and DC/DC LLC controller in bidirectional OBCs. IC Role / Device Role / Timing Role: Dual-channel isolator carries UART/RS-485 signals and fault status flags across reinforced insulation barrier. Use Value: Supports 6000 VRMS working voltage required for 1000 VAC input systems while passing CSA 62368-1 reinforced insulation certification. |
Use Scenario: Providing isolated feedback for current sensing and overcurrent protection in servo drives. IC Role / Device Role / Timing Role: Transmits isolated analog-to-digital converter outputs and receives enable/disable commands with fail-safe default-low behavior. Use Value: Guarantees safe deactivation of IGBTs during controller brownout, preventing uncontrolled motor operation. |
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 | Non-inverting output, 150 Mbps, 3000 VRMS isolation, SOIC-8 (3.9 mm clearance) | Lacks AEC-Q100 qualification and 6 kVRMS rating - suitable for industrial but not automotive traction systems. | Choose when non-inverting logic and lower isolation voltage suffice; verify CMTI (75 kV/µs) meets system noise floor. |
| ISO7721FDWR | Inverting output, 100 Mbps, 5000 VRMS, SOIC-8 (8.0 mm SSO-8 creepage), no AEC-Q100 | Lower data rate limits SPI clock speed; wider SSO-8 package requires more PCB area than NB SOIC-8. | Prefer for cost-sensitive industrial designs needing higher creepage; avoid in automotive BMS where 6 kVRMS and AEC-Q100 are mandatory. |
Compared with ADUM120N0BRZ-RL7 and ISO7721FDWR, SI86SO20EC-AS uniquely combines inverting logic, 6000 VRMS reinforced isolation, AEC-Q100 Grade 1, and NB SOIC-8 footprint-making it the only drop-in solution for space-constrained, safety-critical automotive power electronics requiring guaranteed default-low fail-safe behavior.
Availability
SI86SO20EC-AS is available at Aetrix Electronics and suitable for battery management systems, traction inverters, onboard chargers, and industrial motor drives requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for SI86SO20EC-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 semiconductor company specializing in analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.
The Si86S61x/S62x/SOx family was designed specifically for high-reliability automotive and industrial isolation-emphasizing AEC-Q100 compliance, 6 kVRMS reinforced insulation, and RF-based noise immunity in harsh EMI environments.
FAQ
What is the default output state of SI86SO20EC-AS during power loss?
The SI86SO20EC-AS has a factory-configured default-low fail-safe mode. When VDD1 (input-side supply) is absent or below UVLO threshold, outputs B1 and B2 remain logic low as long as VDD2 is powered. This behavior is fixed by the "EC" suffix and cannot be altered externally. SI86SO20EC-AS ensures safe shutdown of downstream circuits during controller power failure.
Does SI86SO20EC-AS require external bypass capacitors?
Yes, SI86SO20EC-AS requires 0.1 µF and 10 µF ceramic bypass capacitors placed between VDD1–GND1 and VDD2–GND2, located as close as possible to the respective pins. These capacitors stabilize internal regulators and suppress high-frequency noise; omission risks erratic operation or increased EMI susceptibility. SI86SO20EC-AS does not integrate sufficient on-die capacitance to eliminate this requirement.
Can SI86SO20EC-AS interface directly with 3.3 V and 5 V logic families?
Yes, SI86SO20EC-AS supports 2.25–5.5 V on both sides independently. Side-A (VDD1) can be supplied with 3.3 V to interface with MCU GPIOs, while side-B (VDD2) can run at 5 V to drive legacy optocoupler-replacement circuits. Input thresholds scale with VDDx (VIH = 0.7×VDDx, VIL = 0.3×VDDx), and SI86SO20EC-AS maintains full 150 Mbps performance across this range.
What safety certifications apply to SI86SO20EC-AS?
SI86SO20EC-AS holds pending UL 1577 recognition (6000 VRMS), VDE 60747-17 (reinforced insulation), CSA 62368-1 (600 VRMS working voltage), and CQC GB4943.1 approval. It is AEC-Q100 Grade 1 qualified and supports 2 MOPP for medical applications per IEC 60601-1. All certifications are validated for the NB SOIC-8 package variant used in SI86SO20EC-AS.
How does the RF isolation architecture of SI86SO20EC-AS improve noise immunity?
SI86SO20EC-AS uses RF on/off keying instead of pulse-width or edge-detection schemes-making it inherently immune to magnetic field interference and ground bounce. Its 100 kV/µs common-mode transient immunity (CMTI) exceeds capacitive isolators and avoids LED aging issues of optocouplers. This RF modulation is fundamental to SI86SO20EC-AS and enables reliable operation in high-dV/dt motor drive and EV inverter environments.
SI86SO20EC-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
SI86SO20EC-AS FAQ
1.How can I place an order for SI86SO20EC-AS through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SO20EC-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 SI86SO20EC-AS reliable?
The price and inventory of SI86SO20EC-AS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SO20EC-AS is usually 5 days.
3.What payment methods are accepted for SI86SO20EC-AS?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SO20EC-AS transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SO20EC-AS?
SI86SO20EC-AS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SO20EC-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 SI86SO20EC-AS?
For technical support, including SI86SO20EC-AS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SO20EC-AS requirements.
6.How does Aetrix verify that SI86SO20EC-AS is sourced from the original manufacturer or authorized distributors?
All SI86SO20EC-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 SI86SO20EC-AS meets industry standards.
7.What is the process for return or replacement of SI86SO20EC-AS?
All SI86SO20EC-AS units undergo pre-shipment inspection (PSI). If there is an issue with SI86SO20EC-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 SI86SO20EC-AS part is unused and in its original packaging.
Return procedure for SI86SO20EC-AS:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SO20EC-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
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
