My Inquiry
My Account
Skyworks Solutions Inc. SI86SO20BE-AS4
- Part No.:
- SI86SO20BE-AS4
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86SO20BE-AS4.pdf
- Description:
- 6.0 KVRMS INVERTING OUTPUT ISOLA
- Quantity:
- Payment:
- Shipping:
Inventory:3,086
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI86SO20BE-AS4 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 supplies. It is used in battery management systems and traction inverters where high CMTI and precise timing are critical.
For engineers reviewing the SI86SO20BE-AS4 datasheet, SI86SO20BE-AS4 pinout, SI86SO20BE-AS4 application, or SI86SO20BE-AS4 equivalent, this page delivers verified specifications, validated pin functions, confirmed automotive-grade operation, and real-world use context - all aligned to Skyworks' official Si86S61x/S62x/SOx family documentation dated August 2023.
Technical Context
The SI86SO20BE-AS4 implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical components. Its architecture supports independent UVLO and reset monitoring per side (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO hysteresis of 105–160 mV.
It uses CMOS thresholds with Schmitt-trigger input logic (0.15 × VDD hysteresis), delivers 10 ns typical propagation delay and ≤4.5 ns pulse width distortion, and achieves 100 kV/µs common-mode transient immunity - all while maintaining fail-safe default-low behavior during unpowered input conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | 150 Mbps - supports high-speed serial interfaces like SPI, RS-485 transceiver control, and isolated ADC/DAC clocking. |
| Isolation rating | 6000 VRMS - certified per UL 1577 for 1-minute withstand; enables safe operation in 1000 VRMS basic insulation systems. |
| Propagation delay | 5–14 ns - ensures tight timing alignment in motor gate driver feedback loops and real-time control paths. |
| CMTI | 100 kV/µs - suppresses false triggering in high-dV/dt environments such as power inverters and onboard chargers. |
| Supply voltage | 2.25–5.5 V - allows direct interface with 3.3 V and 5 V microcontrollers and isolated power rails. |
| Fail-safe mode | Default-low output - guarantees known low-state output when Side A supply is lost, critical for safety-critical shutdown signaling. |
| Operating temperature | –40 to +125 °C - meets automotive under-hood and industrial ambient requirements without derating. |
| AEC-Q100 grade | Qualified - validated for automotive applications including battery management systems and traction inverters. |
Pinout & Package
SI86SO20BE-AS4 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 power supply | Provides 2.25–5.5 V bias for input-side circuitry; requires 0.1 µF + 10 µF bypass capacitors. |
| GND1 | Side A ground | Reference return for VDD1 and A1/A2 signals; must be separated from GND2 by isolation barrier. |
| A1, A2 | Side A digital inputs | Inverting inputs driving isolated outputs B1/B2; accept CMOS/Schmitt-trigger logic levels. |
| NC | No connect | Pin 3 is internally unconnected; must remain floating and unattached in PCB layout. |
| GND2 | Side B ground | Reference return for VDD2 and B1/B2 signals; galvanically isolated from GND1. |
| B1, B2 | Side B digital outputs | Inverting outputs referenced to VDD2; drive 50 Ω nominal impedance into controlled-impedance traces. |
| VDD2 | Side B power supply | Provides 2.25–5.5 V bias for output-side circuitry; independent of VDD1 for dual-supply operation. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates startup initialization delay and avoids LED aging or photodiode drift issues inherent in optocouplers. |
| Selectably default-low output | Ensures predictable low-state output during input-side power loss - essential for fail-safe shutdown in EV battery disconnect circuits. |
| 100 kV/µs CMTI | Prevents erroneous switching in high-noise motor drives and DC-DC converters operating near IGBTs or SiC FETs. |
| Reinforced IEC 60747-17 rating | Validates 2121 Vpeak working voltage capability in SSO-8 and NB SOIC-8 packages for medical and industrial safety compliance. |
| UVLO + reset monitoring per side | Independent undervoltage lockout (2.10–2.25 V threshold) and reset detection (~1.7 V) prevent metastability during brownout conditions. |
| 36 ns input deglitch filter option | Rejects sub-36 ns noise pulses on A1/A2 lines - critical for reliable signal transmission in EMI-heavy automotive harness environments. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage monitoring and pack-level communication between high-voltage battery stack and MCU. IC Role / Device Role / Timing Role: Dual-channel isolator transmitting isolated analog monitor data and fault signals across 400–800 V DC bus. Use Value: 6000 VRMS isolation and 100 kV/µs CMTI prevent corruption during fast-switching events; default-low output forces safe shutdown on MCU power loss. | Use Scenario: Transmitting PWM gate drive enable/disable signals from inverter controller to isolated gate drivers in SiC-based traction inverters. IC Role / Device Role / Timing Role: Inverting isolator conveying dead-time-controlled logic edges with <14 ns propagation delay skew. Use Value: 150 Mbps data rate and ≤4.5 ns pulse width distortion preserve edge fidelity for precise gate timing; AEC-Q100 qualification ensures reliability at 125 °C junction temperature. |
| Onboard Charger (OBC) | Industrial PLC I/O Module |
Use Scenario: Isolating CAN FD communication and AC line sensing signals between primary-side rectifier control and secondary-side MCU in bidirectional OBCs. IC Role / Device Role / Timing Role: Dual-channel isolator handling high-speed digital control and low-speed status reporting across reinforced barrier. Use Value: Dual supply (VDD1/VDD2) flexibility supports 3.3 V MCU and 5 V sensor domains; 2.25–5.5 V range simplifies auxiliary rail design. | Use Scenario: Providing channel-isolated digital input conditioning for 24 V DC field sensors in modular PLC backplanes. IC Role / Device Role / Timing Role: Inverting isolator converting noisy industrial field signals into clean, synchronized logic levels for FPGA or ARM processor. Use Value: Schmitt-trigger inputs reject line noise; default-low output prevents spurious actuation during controller boot-up or power interruption. |
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, non-inverting, 150 Mbps, 3000 VRMS isolation, 2.7–5.5 V supply. | Lacks reinforced 6000 VRMS rating and AEC-Q100 qualification; not suitable for automotive BMS or traction inverters. | Consider only for cost-sensitive industrial 24 V I/O where 3000 VRMS suffices and dual-channel inversion is unnecessary. |
| ISO7721DWR | Dual-channel, non-inverting, 100 Mbps, 5000 VRMS, 2.25–5.5 V, no AEC-Q100. | Lower CMTI (85 kV/µs), no default-low option, and no automotive qualification limit use in high-reliability EV subsystems. | Acceptable for non-safety-critical industrial automation where 100 Mbps and 5000 VRMS meet system requirements. |
Compared with ADUM120N0BRZ-RL7 and ISO7721DWR, SI86SO20BE-AS4 uniquely combines dual-channel inversion, 6000 VRMS reinforced isolation, AEC-Q100 qualification, and guaranteed default-low fail-safe behavior - making it the only option qualified for functional safety–aligned automotive battery and inverter control.
Availability
SI86SO20BE-AS4 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and onboard chargers requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for SI86SO20BE-AS4 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 for wireless, automotive, and industrial markets.
The Si86S61x/S62x/SOx family was engineered specifically for high-reliability isolation in electric vehicle powertrain systems and industrial equipment demanding reinforced safety certification, ultra-high CMTI, and fail-safe behavior.
FAQ
What is the isolation voltage rating of SI86SO20BE-AS4 and which standards does it meet?
SI86SO20BE-AS4 provides 6000 VRMS isolation per UL 1577 (1-minute test) and meets reinforced insulation requirements per IEC 60747-17 (2121 Vpeak), CSA 62368-1, and VDE 60747-17. These certifications validate its use in automotive battery systems and industrial equipment requiring double protection against shock hazards.
Does SI86SO20BE-AS4 support inverting logic functionality, and how is it implemented?
Yes, SI86SO20BE-AS4 is an inverting-output isolator: logic high on A1/A2 produces logic low on B1/B2, and vice versa. This behavior is inherent to the SOx variant designation and is confirmed in Table 2 of the datasheet for Si86SOx options, enabling direct compatibility with inverted control signals in gate driver interfaces.
What fail-safe behavior does SI86SO20BE-AS4 exhibit during input-side power loss?
SI86SO20BE-AS4 is ordered with default-low fail-safe mode: when VDD1 is unpowered but VDD2 remains active, outputs B1 and B2 are held low. This is implemented via internal pull-downs and is explicitly documented in Table 2 ("Default low options") and Section 3.3 of the datasheet.
Can SI86SO20BE-AS4 operate with different supply voltages on each side, and what are the valid ranges?
Yes, SI86SO20BE-AS4 supports independent supplies: VDD1 (Side A) and VDD2 (Side B) each accept 2.25–5.5 V DC. This allows interfacing a 3.3 V MCU on Side A with a 5 V isolated sensor domain on Side B, as specified in Table 4 (Recommended Operating Conditions) and confirmed in Figure 5 timing diagrams.
Is SI86SO20BE-AS4 qualified for automotive applications, and what evidence supports this?
Yes, SI86SO20BE-AS4 carries AEC-Q100 qualification, as stated in the "Features" section and "Automotive Applications" list of the datasheet. It also supports AIAG-compliant PPAP documentation and IMDS/CAMDS listings - confirming its suitability for onboard chargers, battery management systems, and traction inverters in production EV platforms.
SI86SO20BE-AS4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si86SOx
- Package/Case:
- 8-SOIC (0.295", 7.50mm 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:
- 6000Vrms
- 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-SSO
SI86SO20BE-AS4 FAQ
1.How can I place an order for SI86SO20BE-AS4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SO20BE-AS4 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 SI86SO20BE-AS4 reliable?
The price and inventory of SI86SO20BE-AS4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SO20BE-AS4 is usually 5 days.
3.What payment methods are accepted for SI86SO20BE-AS4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SO20BE-AS4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SO20BE-AS4?
SI86SO20BE-AS4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SO20BE-AS4 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 SI86SO20BE-AS4?
For technical support, including SI86SO20BE-AS4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SO20BE-AS4 requirements.
6.How does Aetrix verify that SI86SO20BE-AS4 is sourced from the original manufacturer or authorized distributors?
All SI86SO20BE-AS4 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 SI86SO20BE-AS4 meets industry standards.
7.What is the process for return or replacement of SI86SO20BE-AS4?
All SI86SO20BE-AS4 units undergo pre-shipment inspection (PSI). If there is an issue with SI86SO20BE-AS4, 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 SI86SO20BE-AS4 part is unused and in its original packaging.
Return procedure for SI86SO20BE-AS4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SO20BE-AS4 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…
