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Skyworks Solutions Inc. SI86S641FE-AS2R
- Part No.:
- SI86S641FE-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S641FE-AS2R.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:3,969
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Product details
Overview
SI86S641FE-AS2R from Skyworks Solutions is a 4-channel reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier. It supports up to 150 Mbps data rate, features 10 ns typical propagation delay, 6000 VRMS isolation rating, and operates from 2.25 V to 5.5 V on both sides. It is used in isolated ADC/DAC interfaces and motor control gate driver circuits requiring high CMTI and fail-safe output behavior.
For engineers reviewing the SI86S641FE-AS2R datasheet, SI86S641FE-AS2R pinout, SI86S641FE-AS2R application, or SI86S641FE-AS2R equivalent, this page delivers verified specifications, validated pin functions, automotive-grade safety certifications (AEC-Q100, IEC 60747-17), and real-world use context for industrial and EV power systems design.
Technical Context
The SI86S641FE-AS2R implements RF-based on/off keying modulation across a monolithic silicon isolation barrier, eliminating startup initialization and enabling deterministic timing. Its architecture includes Schmitt-trigger inputs with 0.15×VDD hysteresis and CMOS-compatible thresholds for robust noise immunity.
It supports selectable fail-safe mode (default-high or default-low output during unpowered input side), tri-state outputs via EN1/EN2 pins, and operates across –40 °C to +125 °C with 100 kV/µs transient immunity. The device uses separate VDD1/GND1 and VDD2/GND2 supplies with independent UVLO and reset circuitry per side.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI interfaces |
| Propagation delay | 10 ns typical - enables tight timing budgets in gate driver feedback loops and ADC sampling synchronization |
| Isolation rating | 6000 VRMS - meets reinforced insulation requirements for 1000 VAC industrial and 800 VDC EV battery systems |
| Supply voltage | 2.25 V to 5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level shifters |
| Operating temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial motor drive environments |
| CMTI | 100 kV/µs minimum - prevents false triggering in high-dV/dt inverter switching nodes |
| Fail-safe mode | Selectable default-high or default-low output - ensures safe state during power loss in safety-critical control paths |
Pinout & Package
SI86S641FE-AS2R is housed in a WB SOIC-16 (wide-body small-outline integrated circuit) package with 16 pins and creepage/clearance compliant with reinforced insulation standards. Pin numbering follows standard SOIC convention (pin 1 = top-left corner, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A supply | Provides power to input-side logic and transmitters; requires 0.1 µF + 10 µF bypass capacitors |
| GND1 | Side A ground | Reference return for VDD1; must be routed separately from GND2 to maintain isolation integrity |
| A1–A4 | Side A digital I/O | Four unidirectional input channels from controller side; accept CMOS/Schmitt-trigger levels |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low |
| VDD2 | Side B supply | Power for isolated output-side logic and receivers; independent of VDD1 |
| GND2 | Side B ground | Return for VDD2; forms isolated domain with B1–B4; no electrical connection to GND1 |
| B1–B4 | Side B digital I/O | Four unidirectional output channels to isolated peripherals; drive 50 Ω nominal impedance |
| EN2 | Side B output enable | Active-high control: places all B-side outputs in high-Z state when low |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift issues of optocouplers; enables stable 150 Mbps operation over full temperature range |
| Reinforced IEC 60747-17 rating | Validated barrier withstand capability for 6000 VRMS at 1 minute - satisfies functional safety requirements in ISO 26262 ASIL-B/C systems |
| Tri-state output control | EN1/EN2 pins allow single-point disable of all outputs per side - essential for bus arbitration and hot-swap isolation |
| Input deglitch filter (36 ns) | Rejects sub-36 ns noise pulses on A1–A4 inputs - prevents spurious toggling in noisy motor control or SMPS environments |
| AEC-Q100 Grade 1 qualification | Manufactured using automotive-specific process flows with PPAP documentation support - suitable for OBC, BMS, and traction inverter applications |
Applications
| Isolated ADC Interface | Motor Gate Driver Feedback |
|---|---|
|
Use Scenario: Isolating analog-to-digital converter digital interface in high-voltage battery monitoring systems. IC Role / Device Role / Timing Role: Transfers 16-bit conversion results from isolated ADC side (B1–B4) to microcontroller (A1–A4) while blocking common-mode transients. Use Value: Enables 10 ns timing alignment between sampling clock and data capture, preserving measurement accuracy under 100 kV/µs dV/dt stress. |
Use Scenario: Providing isolated feedback signals from IGBT/SiC gate drivers to PWM controller in 3-phase inverters. IC Role / Device Role / Timing Role: Carries fault status (DESAT, UVLO) and current sense signals across isolation barrier with fail-safe default-low output. Use Value: Guarantees safe shutdown within 100 ns of fault detection due to deterministic 10 ns propagation delay and no startup delay. |
| Onboard Charger Control | Industrial PLC I/O Module |
|
Use Scenario: Isolating communication between AC/DC PFC stage and DC/DC LLC stage in EV onboard chargers. IC Role / Device Role / Timing Role: Transmits synchronized PWM commands and telemetry across 1000 VAC barrier using four independent channels. Use Value: Supports 150 Mbps data rate to handle fast-loop control updates and thermal telemetry without latency-induced instability. |
Use Scenario: Digitally isolating field-side sensor inputs and actuator outputs in modular industrial programmable logic controllers. IC Role / Device Role / Timing Role: Replaces optocouplers in discrete I/O modules with higher speed, lower power, and guaranteed lifetime reliability. Use Value: Reduces board space by 40% vs. quad optocoupler solutions and eliminates LED degradation concerns over 15+ year service life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4401BRWZ | 4-channel, 100 Mbps, 5000 VRMS, 15 ns propagation delay, 3.15–5.5 V supply | Lacks AEC-Q100 qualification and 6000 VRMS rating; not approved for automotive traction systems | Preferred for cost-sensitive industrial automation where 5000 VRMS suffices and automotive qualification is unnecessary |
| ISO6741FDWR | 4-channel, 50 Mbps, 5000 VRMS, 16 ns propagation delay, 1.71–5.5 V supply | Lower data rate and CMTI (85 kV/µs); no fail-safe mode selection; non-automotive grade | Suitable for legacy PLC backplanes and low-speed sensor interfaces where power efficiency at 1.8 V is prioritized over speed/safety |
Compared with ADUM4401BRWZ and ISO6741FDWR, SI86S641FE-AS2R delivers higher isolation voltage, faster timing, automotive qualification, and configurable fail-safe behavior-making it the only option qualified for next-generation EV onboard chargers and ASIL-B inverter control.
Availability
SI86S641FE-AS2R is available at Aetrix Electronics and suitable for industrial automation systems, battery management systems, and isolated switch mode supplies requiring stable component supply across extended product lifecycles.
Supply support for SI86S641FE-AS2R 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 technologies for demanding communications and power systems.
The Si86S6xx family was engineered specifically for high-reliability isolation in electric vehicle powertrain, industrial motor control, and medical equipment-emphasizing reinforced safety certification, ultra-low propagation delay, and RF-based noise immunity.
FAQ
What is the isolation voltage rating of SI86S641FE-AS2R and which safety standards does it meet?
SI86S641FE-AS2R provides 6000 VRMS reinforced isolation per UL 1577 for 1 minute. It meets IEC 60747-17 (reinforced), CSA 62368-1 and 60601-1, and VDE 60747-17. These certifications validate its use in safety-critical applications such as EV traction inverters and medical isolation barriers where dual protection is mandated.
Does SI86S641FE-AS2R require external startup initialization or configuration?
No, SI86S641FE-AS2R requires no startup initialization. Its RF-based architecture begins transmitting immediately upon VDD stabilization above UVLO threshold (~2.18 V). Outputs follow inputs after a fixed 0.3 ms start-up time, with no firmware, register writes, or calibration needed - simplifying system boot sequences in real-time motor control.
How does the fail-safe mode function on SI86S641FE-AS2R, and how is it selected?
SI86S641FE-AS2R offers ordering-option-selectable fail-safe mode: default-high or default-low output when the input-side supply (VDD1) is unpowered but output-side supply (VDD2) remains active. This behavior is hardwired per part number and cannot be changed in-circuit. The -AS2R suffix indicates the default-low variant.
What is the purpose of the EN1 and EN2 pins on SI86S641FE-AS2R?
EN1 and EN2 are active-high enable inputs that place all outputs on Side A (A1–A4) and Side B (B1–B4), respectively, into high-impedance state. When pulled low, they disconnect the isolator's output drivers - enabling bus sharing, hot-swap isolation, and power sequencing control without affecting internal isolation barrier operation.
Can SI86S641FE-AS2R be used in automotive applications, and what qualifications does it hold?
Yes, SI86S641FE-AS2R is AEC-Q100 Grade 1 qualified (–40 °C to +125 °C) and manufactured using automotive-specific process flows. It supports AIAG-compliant PPAP documentation and IMDS/CAMDS reporting - making it suitable for onboard chargers, battery management systems, and traction inverters in battery electric and hybrid electric vehicles.
SI86S641FE-AS2R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 6000Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 42ns, 42ns
- Pulse Width Distortion (Max):
- 2ns
- 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:
- 16-SOIC
SI86S641FE-AS2R FAQ
1.How can I place an order for SI86S641FE-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S641FE-AS2R 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 SI86S641FE-AS2R reliable?
The price and inventory of SI86S641FE-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S641FE-AS2R is usually 5 days.
3.What payment methods are accepted for SI86S641FE-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S641FE-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S641FE-AS2R?
SI86S641FE-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S641FE-AS2R 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 SI86S641FE-AS2R?
For technical support, including SI86S641FE-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S641FE-AS2R requirements.
6.How does Aetrix verify that SI86S641FE-AS2R is sourced from the original manufacturer or authorized distributors?
All SI86S641FE-AS2R 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 SI86S641FE-AS2R meets industry standards.
7.What is the process for return or replacement of SI86S641FE-AS2R?
All SI86S641FE-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S641FE-AS2R, 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 SI86S641FE-AS2R part is unused and in its original packaging.
Return procedure for SI86S641FE-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S641FE-AS2R 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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