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Skyworks Solutions Inc. SI86S642EC-IS1R
- Part No.:
- SI86S642EC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S642EC-IS1R.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 4 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:1,879
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Product details
Overview
SI86S642EC-IS1R from Skyworks Solutions is a 4-channel, reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier. It supports DC to 150 Mbps data rates, delivers 10 ns typical propagation delay, and provides 6000 VRMS isolation rating in a WB SOIC-16 package. It operates from 2.25–5.5 V supplies and is qualified per AEC-Q100 for automotive onboard chargers and battery management systems.
For engineers reviewing the SI86S642EC-IS1R datasheet, SI86S642EC-IS1R pinout, SI86S642EC-IS1R application, or SI86S642EC-IS1R equivalent, key selection criteria include its fail-safe output mode (default low), 36 ns input deglitch filter, tri-state outputs with EN1/EN2 control, and compatibility with isolated SPI and motor control interfaces requiring high CMTI (>100 kV/µs) and extended temperature operation (–40 to 125 °C).
Technical Context
The SI86S642EC-IS1R implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier-eliminating startup initialization and enabling deterministic timing. Its architecture includes independent undervoltage lockout (UVLO) and reset circuitry on both sides (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO hysteresis of 105–160 mV.
It features Schmitt-trigger + CMOS-threshold inputs for noise immunity, selectable fail-safe output state (low-default per "EC" suffix), and integrated 36 ns input deglitch filters-specifically enabled in the S64x variant family. The device supports dual-supply operation with side-specific enable pins (EN1/EN2) and maintains tri-state output capability during disable or unpowered conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI without external clock recovery. |
| Propagation delay | 10 ns typical - enables tight timing budgets in real-time motor control and power converter feedback loops. |
| Isolation rating | 6000 VRMS - meets reinforced insulation requirements per IEC 60747-17 and UL 1577 for industrial and automotive safety-critical systems. |
| Supply voltage | 2.25–5.5 V - allows direct interface with 3.3 V and 5 V logic domains without level-shifting circuitry. |
| Input deglitch | 36 ns filter - suppresses sub-36 ns transients on A-side inputs, preventing false triggering in noisy motor drive or inverter gate-drive environments. |
| Fail-safe mode | Default low output - ensures predictable low-state behavior during VDD1 loss, critical for safe shutdown in BMS and traction inverter control paths. |
| CMTI | ≥100 kV/µs - sustains reliable operation under fast common-mode transients typical in SiC/GaN-based power stages. |
Pinout & Package
SI86S642EC-IS1R is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS reinforced insulation. Pin assignments follow the Si86S64x layout shown in Figure 2 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A supply | Power and reference for input-side channels (A1–A4); bypass requires 0.1 µF + 10 µF capacitors. |
| A1–A4 | Side A digital I/O | Four isolated input/output channels on primary side; support Schmitt-trigger + CMOS thresholds. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low, enabling bus sharing. |
| VDD2, GND2 | Side B supply | Independent power domain for secondary side; supports galvanic isolation between domains. |
| B1–B4 | Side B digital I/O | Four isolated output/input channels on secondary side; electrically decoupled from Side A. |
| EN2 | Side B output enable | Active-high control: places B-side outputs in tri-state, allowing multi-device bus arbitration. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF carrier modulation enables immediate data transmission at power-on-no configuration or handshake required. |
| Reinforced IEC 60747-17 rating | Validated barrier design meets reinforced insulation standards for medical (60601-1) and industrial (62368-1) end-equipment certification. |
| Tri-state outputs with enable | EN1/EN2 pins provide hardware-controlled bus contention avoidance on both sides without software overhead. |
| Selectable fail-safe mode | "EC" ordering code fixes default output state to logic low during VDD1 loss-critical for fail-safe gate driver interlocks. |
| 36 ns input deglitch filter | Hardware filter blocks noise pulses <36 ns width on A-side inputs, eliminating need for external RC filtering in EMI-prone environments. |
Applications
| Onboard Charger Control | Battery Management System (BMS) |
|---|---|
Use Scenario: Isolating MCU GPIOs and ADC references from high-voltage DC-DC stage in EV onboard chargers. IC Role / Device Role / Timing Role: Bidirectional digital isolator for PWM feedback, fault signaling, and status reporting across 400–800 V domains. Use Value: 6000 VRMS rating and 100 kV/µs CMTI ensure robust communication during fast switching transitions in SiC-based PFC stages. | Use Scenario: Galvanically isolating cell monitor ICs (e.g., LTC6813) from host MCU in high-voltage battery packs. IC Role / Device Role / Timing Role: 4-channel isolator for voltage/current measurement data, pack status, and balancing command signals. Use Value: Default-low fail-safe mode guarantees open-circuit or low-level fault signals during MCU power loss-preventing unsafe cell overcharge. |
| Industrial Motor Drive | Traction Inverter Interface |
Use Scenario: Isolating position encoder signals and gate driver enable lines in servo drives with 24 V control and 690 V AC bus. IC Role / Device Role / Timing Role: High-speed digital isolator for incremental encoder A/B/Z channels and STO (Safe Torque Off) commands. Use Value: 150 Mbps capability supports high-resolution encoder sampling; 36 ns deglitch prevents false edge detection from EMI near IGBT modules. | Use Scenario: Interfacing vehicle controller unit (VCU) to inverter control unit (ICU) in battery electric vehicles. IC Role / Device Role / Timing Role: Isolated communication path for torque commands, thermal limits, and fault acknowledgments across HV/LV domains. Use Value: AEC-Q100 qualification and –40 to 125 °C operation ensure reliability in under-hood traction inverter enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2402BRWZ | 4-channel, 25 Mbps max data rate; 50 ns propagation delay; 5000 VRMS isolation; no deglitch filter. | Suitable for lower-speed industrial PLC I/O but lacks 150 Mbps and 36 ns filtering needed for EV charger feedback loops. | Choose ADUM2402BRWZ only if system data rate ≤25 Mbps and CMTI >50 kV/µs suffices. |
| ISO7742FDWR | 4-channel, 100 Mbps max data rate; 11 ns propagation delay; 5000 VRMS; no fail-safe default-low option. | Acceptable for BMS monitoring where fail-safe defaults are managed externally, but not certified for automotive AEC-Q100. | Prefer ISO7742FDWR for cost-sensitive industrial inverters where AEC-Q100 is not mandated. |
Compared with ADUM2402BRWZ and ISO7742FDWR, SI86S642EC-IS1R delivers higher speed (150 Mbps vs. 25/100 Mbps), reinforced 6000 VRMS isolation, factory-configured default-low fail-safe behavior, and integrated 36 ns input filtering-making it uniquely suited for automotive-grade, high-noise, high-speed isolation in EV power electronics.
Availability
SI86S642EC-IS1R is available at Aetrix Electronics and suitable for onboard chargers, battery management systems, and traction inverters requiring stable component supply with automotive-grade traceability and long-term lifecycle support.
Supply support for SI86S642EC-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 provider of analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for wireless, automotive, and industrial markets.
The Si86S6xx family is engineered for high-reliability galvanic isolation in safety-critical power conversion and automotive electrification systems-emphasizing speed, noise immunity, and regulatory compliance.
FAQ
What is the isolation rating and safety certification status of SI86S642EC-IS1R?
SI86S642EC-IS1R provides 6000 VRMS reinforced isolation per UL 1577 and is certified to IEC 60747-17. It also meets CSA 62368-1 and 60601-1, and CQC GB4943.1. These certifications are validated for the WB SOIC-16 package and apply directly to SI86S642EC-IS1R-not derived from family-level data.
Does SI86S642EC-IS1R support fail-safe operation, and how is it configured?
Yes, SI86S642EC-IS1R is ordered with default-low fail-safe behavior (denoted by "EC" in the part number). When VDD1 is unpowered but VDD2 remains active, all B-side outputs default to logic low-ensuring safe shutdown in gate driver or BMS control paths without external circuitry.
What is the purpose of the 36 ns input deglitch filter in SI86S642EC-IS1R?
The 36 ns input deglitch filter on SI86S642EC-IS1R suppresses noise pulses shorter than 36 ns on A-side inputs. This eliminates false triggering in high-EMI environments like motor drives and inverters, removing the need for external RC filters while maintaining signal integrity at full 150 Mbps data rates.
Can SI86S642EC-IS1R be used in SPI isolation applications?
Yes, SI86S642EC-IS1R supports isolated SPI implementations using two forward and two reverse channels. While not a dedicated SPI isolator like Si86SS41, its configurable directionality, tri-state outputs, and 150 Mbps bandwidth allow robust SPI signal isolation in custom designs requiring flexibility beyond fixed SPI pinouts.
What are the supply voltage and temperature ranges supported by SI86S642EC-IS1R?
SI86S642EC-IS1R operates from 2.25 V to 5.5 V on both VDD1 and VDD2 supplies and is rated for ambient temperatures from –40 °C to +125 °C. This range is validated per AEC-Q100 Grade 1 and supports under-hood automotive and industrial power electronics deployments.
SI86S642EC-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:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 14ns, 14ns
- 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
SI86S642EC-IS1R FAQ
1.How can I place an order for SI86S642EC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642EC-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 SI86S642EC-IS1R reliable?
The price and inventory of SI86S642EC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642EC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86S642EC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642EC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642EC-IS1R?
SI86S642EC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642EC-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 SI86S642EC-IS1R?
For technical support, including SI86S642EC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642EC-IS1R requirements.
6.How does Aetrix verify that SI86S642EC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86S642EC-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 SI86S642EC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86S642EC-IS1R?
All SI86S642EC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642EC-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 SI86S642EC-IS1R part is unused and in its original packaging.
Return procedure for SI86S642EC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642EC-IS1R Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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