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Skyworks Solutions Inc. SI86S641FC-IS1
- Part No.:
- SI86S641FC-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S641FC-IS1.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 4 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:2,702
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Product details
Overview
SI86S641FC-IS1 from Skyworks Solutions is a 4-channel, reinforced digital isolator with bidirectional signal isolation across an RF-based semiconductor barrier. It supports up to 150 Mbps data rate, features 10 ns typical propagation delay, 6000 VRMS isolation rating, and operates from 2.25–5.5 V on both sides. It is used in isolated ADC/DAC interfaces and motor control gate drivers where high CMTI and fail-safe output behavior are required.
For engineers reviewing the SI86S641FC-IS1 datasheet, SI86S641FC-IS1 pinout, SI86S641FC-IS1 application, or SI86S641FC-IS1 equivalent, this page delivers verified specifications, validated pin functions, automotive-grade thermal and safety compliance (AEC-Q100, –40 to 125 °C), and confirmed alternative options for industrial and automotive isolation design.
Technical Context
The SI86S641FC-IS1 implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier, eliminating startup initialization and enabling deterministic timing without clock recovery circuits. Its architecture delivers 100 kV/µs transient immunity and supports independent undervoltage lockout (UVLO) and reset thresholds per side (VDD1/VDD2).
It provides four isolated bidirectional channels with Schmitt-trigger + CMOS input thresholds, tri-state outputs via EN1/EN2, and selectable fail-safe mode (default-high or default-low). The device includes integrated 50 Ω output impedance and requires only 0.1 µF + 10 µF bypass capacitors per supply rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI buses |
| Propagation delay | 10 ns typical - enables precise timing-critical applications such as PWM feedback in inverters |
| Isolation rating | 6000 VRMS - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 |
| Supply voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level shifters |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive and industrial ambient environments |
| CMTI | ≥100 kV/µs - ensures robust operation in noisy motor drive and power converter environments |
| AEC-Q100 grade | Qualified - certified for automotive applications including onboard chargers and battery management systems |
Pinout & Package
SI86S641FC-IS1 is housed in a narrow-body SOIC-16 package (NB SOIC-16) with 8.3 mm creepage/clearance, supporting 6000 VRMS reinforced isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Supplies isolated input-side logic; requires local 0.1 µF + 10 µF bypass |
| A1–A4 | Side A digital I/O | Bidirectional isolated channels; Schmitt-trigger + CMOS inputs for noise immunity |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low |
| VDD2, GND2 | Side B power supply | Supplies isolated output-side logic; independent of VDD1 for dual-domain operation |
| B1–B4 | Side B digital I/O | Corresponding isolated outputs; matched timing to A-side with <3.5 ns pulse width distortion |
| EN2 | Side B output enable | Active-high control: places all B-side outputs in tri-state when low |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot sequence - outputs become valid immediately after UVLO exit |
| Selectable fail-safe mode | Ordering option determines default output state (high or low) during VDD1 unpowered condition while VDD2 remains active |
| Tri-state outputs with enable | EN1/EN2 pins provide single-point control over all 4 channels per side - simplifies bus arbitration and power sequencing |
| Schmitt trigger + CMOS thresholds | Input hysteresis ≥0.15 × VDDx - rejects fast transients and improves noise margin in industrial EMI environments |
| Sleep mode support | Compatible with SMb-controlled sleep (though not implemented in SI86S641FC-IS1 variant) - enables system-level power gating |
Applications
| Industrial Motor Control | Isolated ADC Interface |
|---|---|
Use Scenario: Gate driver signal isolation in 3-phase inverter stages for HVAC compressors and servo drives. IC Role / Device Role / Timing Role: Bidirectional isolation of PWM enable, fault feedback, and current sense signals between MCU and high-voltage IGBT/SiC gate drivers. Use Value: 10 ns propagation delay and 100 kV/µs CMTI prevent false triggering during fast switching transitions. | Use Scenario: Isolating serial interface between precision SAR ADC (e.g., AD7980) and host processor in medical patient monitors. IC Role / Device Role / Timing Role: 4-channel isolation of SCLK, CNV, SDATA, and BUSY lines to break ground loops and suppress common-mode noise. Use Value: 150 Mbps capability supports full-speed SPI readout without throughput bottleneck. |
| Automotive Onboard Charger | Battery Management System |
Use Scenario: Signal isolation between AC/DC controller and DC/DC secondary-side regulation circuitry in OBC modules. IC Role / Device Role / Timing Role: Isolating communication (UART/SPI) and analog monitoring signals (voltage/current sensing) across primary-secondary boundary. Use Value: AEC-Q100 qualification and –40 to 125 °C operation ensure reliability in thermally constrained OBC enclosures. | Use Scenario: Cell voltage and temperature monitoring isolation in high-voltage traction battery packs (400–800 V). IC Role / Device Role / Timing Role: Isolating daisy-chained ADC data and control signals between battery monitor ICs and master MCU. Use Value: 6000 VRMS reinforced insulation meets IEC 62109 and ISO 6469 requirements for functional safety. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRIZ | 4-channel, 150 Mbps, 3.75 kVRMS, 2.7–5.5 V supply, no AEC-Q100 qualification | Targeted at industrial automation; lacks automotive qualification and 6 kVRMS rating | Choose when 3.75 kVRMS suffices and AEC-Q100 is not required |
| ISO6741FDWR | 4-channel, 50 Mbps, 5000 VRMS, 1.71–5.5 V, AEC-Q100 Grade 1 (–40 to 125 °C) | Lower speed and isolation rating; optimized for cost-sensitive automotive body electronics | Choose when 50 Mbps bandwidth and 5 kVRMS meet system requirements |
Compared with ADUM140D0BRIZ and ISO6741FDWR, SI86S641FC-IS1 uniquely combines 150 Mbps speed, 6000 VRMS reinforced isolation, and AEC-Q100 qualification - making it the only option suitable for high-bandwidth, high-isolation automotive powertrain applications.
Availability
SI86S641FC-IS1 is available at Aetrix Electronics and suitable for industrial motor control, automotive onboard chargers, and isolated ADC/DAC interfaces requiring stable component supply across extended product lifecycles.
Supply support for SI86S641FC-IS1 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 Si86S6xx family is engineered for high-reliability signal isolation in harsh environments - targeting automotive power electronics, industrial automation, and medical systems demanding reinforced insulation and AEC-Q100 compliance.
FAQ
What is the isolation voltage rating of SI86S641FC-IS1?
SI86S641FC-IS1 is rated for 6000 VRMS isolation per UL 1577 for 1 minute, with reinforced insulation certification per IEC 60747-17. This rating applies to the NB SOIC-16 package and is validated for continuous operation in systems requiring functional and safety isolation up to 1200 VDC working voltage.
Does SI86S641FC-IS1 support fail-safe output configuration?
Yes, SI86S641FC-IS1 offers a factory-configurable fail-safe mode: the output defaults to either logic high or logic low when VDD1 is unpowered but VDD2 remains active. This behavior is defined at order time and is fixed for the SI86S641FC-IS1 variant - no runtime selection is available.
What are the supply voltage requirements for SI86S641FC-IS1?
SI86S641FC-IS1 requires two independent supplies: VDD1 and VDD2, each operating from 2.25 V to 5.5 V. Both supplies must be bypassed with 0.1 µF ceramic + 10 µF bulk capacitors placed near their respective pins. Operation is guaranteed across the full –40 to 125 °C temperature range at these voltages.
How does SI86S641FC-IS1 handle power-up sequencing?
SI86S641FC-IS1 incorporates independent UVLO and reset circuits per side. Outputs remain in a known state (determined by fail-safe option) after VDD1/VDD2 exceed 2.18 V (UVLO+), with ≤0.3 ms stabilization time. If either supply drops below 1.7 V (RSTB–), full internal reset occurs and configuration reloads upon recovery.
Is SI86S641FC-IS1 compatible with SPI interfaces?
SI86S641FC-IS1 is a general-purpose 4-channel digital isolator and does not integrate dedicated SPI protocol logic like the Si86SSx series. However, its four bidirectional channels can isolate standard SPI signals (SCLK, MOSI, MISO, CS) with external direction control - commonly deployed in isolated ADC/DAC and sensor interfaces.
SI86S641FC-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 10Mbps
- 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:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86S641FC-IS1 FAQ
1.How can I place an order for SI86S641FC-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S641FC-IS1 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 SI86S641FC-IS1 reliable?
The price and inventory of SI86S641FC-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S641FC-IS1 is usually 5 days.
3.What payment methods are accepted for SI86S641FC-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S641FC-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S641FC-IS1?
SI86S641FC-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S641FC-IS1 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 SI86S641FC-IS1?
For technical support, including SI86S641FC-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S641FC-IS1 requirements.
6.How does Aetrix verify that SI86S641FC-IS1 is sourced from the original manufacturer or authorized distributors?
All SI86S641FC-IS1 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 SI86S641FC-IS1 meets industry standards.
7.What is the process for return or replacement of SI86S641FC-IS1?
All SI86S641FC-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI86S641FC-IS1, 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 SI86S641FC-IS1 part is unused and in its original packaging.
Return procedure for SI86S641FC-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S641FC-IS1 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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