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Skyworks Solutions Inc. SI86S641FC-IS1R
- Part No.:
- SI86S641FC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S641FC-IS1R.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 4 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:4,611
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Product details
Overview
SI86S641FC-IS1R 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, 3.5 ns pulse width distortion, and 6000 VRMS isolation rating. It operates from 2.25–5.5 V supplies and is used in isolated ADC/DAC interfaces and motor control gate driver circuits.
For engineers reviewing the SI86S641FC-IS1R datasheet, SI86S641FC-IS1R pinout, SI86S641FC-IS1R application, or SI86S641FC-IS1R equivalent, key selection criteria include its 4-channel configuration with independent A/B side enable pins (EN1/EN2), fail-safe output mode selection, Schmitt-trigger + CMOS input thresholds, and compliance with IEC 60747-17 reinforced insulation for industrial and automotive systems.
Technical Context
The SI86S641FC-IS1R implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity. Its architecture delivers precise timing (10 ns propagation delay, 3.5 ns pulse width distortion) and transient immunity of ≥100 kV/µs without external components beyond 0.1 µF and 10 µF bypass capacitors per supply rail.
It supports dual-supply operation (VDD1/VDD2 = 2.25–5.5 V), includes tri-state outputs controlled by EN1/EN2, and offers selectable fail-safe default output state (high or low) during unpowered input conditions. The device meets AEC-Q100 Grade 1 qualification and carries UL 1577, VDE 60747-17, CSA 62368-1, and CQC GB4943.1 safety certifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - enables high-speed serial communication in isolated SPI, RS-485, and gate driver feedback loops. |
| Propagation Delay | 10 ns typical - ensures tight timing alignment between isolated control and sensing paths in real-time motor control. |
| Isolation Rating | 6000 VRMS - provides reinforced insulation per IEC 60747-17 for use in 1000 VAC industrial bus systems and EV traction inverters. |
| Supply Voltage | 2.25–5.5 V - allows direct interfacing with 3.3 V and 5 V logic domains on both sides without level shifters. |
| Operating Temperature | –40 to +125 °C - supports deployment in under-hood automotive modules and industrial PLC backplanes. |
| Transient Immunity | ≥100 kV/µs - suppresses fast common-mode transients induced by IGBT switching in power converters. |
| Fail-Safe Mode | Selectable default high/low output - prevents undefined states during brown-out or controller reset in safety-critical subsystems. |
Pinout & Package
SI86S641FC-IS1R is housed in a WB SOIC-16 (wide-body small-outline integrated circuit) package with creepage/clearance optimized for 6000 VRMS working voltage. Pin 1 is marked with a dot; the isolation barrier separates Side A (pins 1–8) and Side B (pins 9–16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides independent 2.25–5.5 V bias for input-side logic; requires local 0.1 µF + 10 µF decoupling. |
| A1–A4 | Side A digital I/O | Four unidirectional input channels referenced to VDD1/GND1; accept CMOS/Schmitt-trigger thresholds. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low, enabling shared-bus arbitration. |
| VDD2, GND2 | Side B power supply | Independent 2.25–5.5 V bias for output-side logic; galvanically isolated from VDD1. |
| B1–B4 | Side B digital I/O | Four unidirectional output channels referenced to VDD2/GND2; drive 50 Ω nominal impedance loads. |
| EN2 | Side B output enable | Active-high control: places all B-side outputs in high-Z state, supporting multi-drop isolated bus topologies. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF-modulated channel architecture eliminates boot sequence delays-output follows input immediately after UVLO exit. |
| Schmitt-trigger + CMOS inputs | Combined threshold hysteresis (≥0.15 × VDD) and standard logic levels ensure reliable operation in noisy factory environments. |
| Tri-state outputs with enable | Dual independent EN1/EN2 pins allow dynamic bus contention management on both isolated sides without external logic. |
| Reinforced IEC 60747-17 rating | Validated insulation structure supports functional safety requirements in ASIL-B/C and SIL-2 systems. |
| Low-power sleep mode option | Not implemented in SI86S641FC-IS1R - this variant lacks SMb pin; power optimization relies on EN1/EN2 gating only. |
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: Transmits PWM enable/disable and fault feedback signals across 1000 VDC bus barriers with <10 ns timing skew. Use Value: Enables compact, high-efficiency designs meeting IEC 61800-5-1 reinforced insulation requirements without optocoupler latency. |
Use Scenario: Isolating serial data lines between precision SAR ADC (e.g., AD7606) and host MCU in programmable logic controllers. IC Role / Device Role / Timing Role: Provides 4-channel bidirectional isolation for CONVST, BUSY, RD, and serial data clock/data lines. Use Value: Maintains 16-bit measurement integrity by rejecting >100 kV/µs common-mode transients generated by adjacent IGBT switching. |
| Onboard Charger (OBC) | Battery Management System (BMS) |
|
Use Scenario: Signal isolation between AC/DC controller and DC/DC secondary-side regulation in EV onboard chargers. IC Role / Device Role / Timing Role: Isolates feedback signals (voltage sense, current sense, thermal alerts) from 400–800 VDC battery domain to 12 V control domain. Use Value: Achieves 6000 VRMS withstand per UL 1577, enabling single-package isolation where split-supply optocouplers require multiple devices. |
Use Scenario: Isolating cell monitoring IC (e.g., LTC6813) daisy-chain communication in high-voltage battery packs (up to 1000 V). IC Role / Device Role / Timing Role: Transmits isolated SPI clock, CS, MOSI, and MISO between master MCU and slave monitoring ICs across module boundaries. Use Value: Supports 150 Mbps data rate to maintain sub-100 µs cell voltage update cycles across 12+ module stacks without timing bottlenecks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2401ARWZ | 4-channel, 25 Mbps max data rate; 30 ns propagation delay; 5000 VRMS isolation; SOIC-16WB package. | Limited to lower-speed industrial I/O and legacy PLC designs; not AEC-Q100 qualified. | Choose when cost sensitivity outweighs speed/safety requirements and automotive qualification is unnecessary. |
| ISO6741FDWR | 4-channel, 50 Mbps max data rate; 11 ns propagation delay; 5000 VRMS; SOIC-16 package (narrow body). | Lower isolation rating and no reinforced certification; suitable for non-safety-critical consumer-grade isolation. | Prefer for space-constrained designs where 5000 VRMS suffices and AEC-Q100 is not mandated. |
Compared with ADUM2401ARWZ and ISO6741FDWR, SI86S641FC-IS1R delivers 3× higher data rate, 6000 VRMS reinforced isolation, and AEC-Q100 Grade 1 qualification-making it the only choice for next-generation EV power electronics and high-fidelity industrial feedback loops requiring deterministic timing and certified safety margins.
Availability
SI86S641FC-IS1R is available at Aetrix Electronics and suitable for industrial motor control, EV onboard chargers, and isolated ADC/DAC interfaces requiring stable component supply across extended product lifecycles.
Supply support for SI86S641FC-IS1R 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 for high-reliability applications.
The Si86S6xx family was designed specifically for high-speed, reinforced digital isolation in automotive traction systems and industrial automation-emphasizing low propagation delay, high CMTI, and full safety certification out-of-the-box.
FAQ
What is the maximum data rate supported by SI86S641FC-IS1R?
The SI86S641FC-IS1R supports a maximum data rate of 150 Mbps under specified operating conditions (VDD = 2.25–5.5 V, TA = –40 to +125 °C). This enables high-throughput serial communication in isolated SPI, digital encoder, and gate driver feedback applications without timing bottlenecks. Performance is guaranteed across temperature and voltage ranges per Skyworks' characterization data.
Does SI86S641FC-IS1R require external bypass capacitors?
Yes, SI86S641FC-IS1R requires two bypass capacitors per supply rail: a 0.1 µF ceramic capacitor and a 10 µF bulk capacitor placed as close as possible to VDD1/GND1 and VDD2/GND2 pins. These are mandatory for stable operation and EMI suppression-omitting them risks erratic behavior or reduced transient immunity.
What safety certifications does SI86S641FC-IS1R hold?
SI86S641FC-IS1R is certified to UL 1577 (6000 VRMS, 1 minute), VDE 60747-17 (reinforced insulation), CSA 62368-1 and 60601-1, and CQC GB4943.1. It is also AEC-Q100 Grade 1 qualified. These certifications validate its suitability for safety-critical automotive and medical applications without additional system-level derating.
How does the fail-safe mode operate on SI86S641FC-IS1R?
SI86S641FC-IS1R offers ordering-selectable fail-safe mode: the default output state (when VDD1 is unpowered but VDD2 remains active) is either logic high or logic low. This behavior is hard-coded at manufacture and ensures predictable B-side output states during controller power loss-critical for preventing unintended actuator activation in motor drives.
Is SI86S641FC-IS1R compatible with 3.3 V and 5 V logic families?
Yes, SI86S641FC-IS1R operates over a wide supply range of 2.25–5.5 V on both sides, making it fully interoperable with 3.3 V and 5 V CMOS logic families. Input thresholds scale with VDD (VIH = 0.7 × VDDx, VIL = 0.3 × VDDx), and outputs drive standard CMOS loads with VOH ≥ VDD–0.4 V and VOL ≤ 0.4 V.
SI86S641FC-IS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-IS1R FAQ
1.How can I place an order for SI86S641FC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S641FC-IS1R 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-IS1R reliable?
The price and inventory of SI86S641FC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S641FC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86S641FC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S641FC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S641FC-IS1R?
SI86S641FC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S641FC-IS1R 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-IS1R?
For technical support, including SI86S641FC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S641FC-IS1R requirements.
6.How does Aetrix verify that SI86S641FC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86S641FC-IS1R 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-IS1R meets industry standards.
7.What is the process for return or replacement of SI86S641FC-IS1R?
All SI86S641FC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S641FC-IS1R, 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-IS1R part is unused and in its original packaging.
Return procedure for SI86S641FC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S641FC-IS1R Tags
-
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
-
ISO7741FDWR
Texas Instruments
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