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Skyworks Solutions Inc. SI86SL42FC-IS1
- Part No.:
- SI86SL42FC-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- -
- Datasheet:
-
SI86SL42FC-IS1.pdf
- Description:
- 3.75 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:3,232
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Product details
Overview
SI86SL42FC-IS1 from Skyworks Solutions is a 4-channel, low-power digital isolator with reinforced isolation (6000 VRMS), designed for bidirectional signal transfer across high-voltage barriers in automotive and industrial systems. It operates from 2.25 V to 5.5 V per side, delivers ≤10 ns propagation delay, supports up to 150 Mbps data rate, and features selectable fail-safe output (default-low) for power-loss scenarios in battery management and traction inverter control.
For engineers reviewing the SI86SL42FC-IS1 datasheet, SI86SL42FC-IS1 pinout, SI86SL42FC-IS1 application, or SI86SL42FC-IS1 equivalent, this device is evaluated for high-EMI environments requiring AEC-Q100 qualification, precise timing, tri-state outputs with enable, and Schmitt-trigger CMOS inputs - critical for isolated ADC interfaces, onboard chargers, and motor gate driver feedback loops.
Technical Context
The SI86SL42FC-IS1 implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity (≥100 kV/µs CMTI). Its architecture integrates independent undervoltage lockout (UVLO) and reset circuitry per side (VDD1/VDD2), with RSTB thresholds at ~1.7 V to preserve configuration during brownout.
This variant belongs to the Si86SLx subfamily optimized for quiescent power reduction - consuming ≈0.25 mA/channel less than Si86S6x counterparts - while retaining identical pinout and functional compatibility. It supports fail-safe default-low operation and includes tri-state enable (EN1/EN2) for synchronized output control across both isolation sides.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | Up to 150 Mbps - enables high-speed SPI, CAN FD, and encoder feedback in real-time motor control. |
| Propagation delay | 10 ns typical - ensures tight timing alignment between controller and isolated peripherals in closed-loop systems. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for 800 V battery systems. |
| Supply voltage | 2.25–5.5 V per side - supports direct interface with 3.3 V microcontrollers and 5 V analog front-ends without level-shifting. |
| Operating temperature | –40 °C to +125 °C - qualified for under-hood automotive use and industrial ambient conditions. |
| CMTI | ≥100 kV/µs - prevents false triggering in high-dV/dt environments like IGBT/SiC gate driver circuits. |
| AEC-Q100 grade | Qualified to Grade 1 - validated for automotive powertrain and charging applications per stress test requirements. |
Pinout & Package
SI86SL42FC-IS1 is housed in a narrow-body SOIC-16 package (NB SOIC-16) with 8.3 mm creepage/clearance, supporting 6000 VRMS isolation. Pin assignments follow the Si86S64x/L4x family layout (Figure 2), with side A (pins 1–8) and side B (pins 9–16) separated by an internal isolation barrier.
| 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 bypassing. |
| A1–A4 | Side A digital I/O | Four unidirectional or bidirectional channels (configurable via external direction logic); CMOS/Schmitt inputs. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low - enables bus sharing and power sequencing. |
| VDD2, GND2 | Side B power supply | Galvanically isolated 2.25–5.5 V supply for output-side circuitry; independent UVLO monitoring. |
| B1–B4 | Side B digital I/O | Isolated mirror of A1–A4; maintains signal integrity across barrier with <3.5 ns pulse width distortion. |
| EN2 | Side B output enable | Synchronized tri-state control for B-side outputs - essential for safe startup/shutdown in safety-critical subsystems. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF-modulated architecture eliminates boot delay - outputs become valid within 0.3 ms of VDD stabilization. |
| Selectable fail-safe mode | Default-low output state during VDD1/VDD2 undervoltage - prevents undefined states in BMS fault detection paths. |
| Tri-state outputs with enable | Dual EN1/EN2 pins allow independent high-Z control per side - supports hot-swap capability and multi-master bus arbitration. |
| Schmitt-trigger + CMOS inputs | Hysteresis ≥0.15×VDDx rejects >36 ns noise pulses - suppresses EMI-induced glitches in noisy inverter environments. |
| Low-power optimization | Si86SLx-specific design reduces quiescent current vs. Si86S6x - extends battery life in always-on vehicle subsystems. |
Applications
| Onboard Charger Control | Battery Management System |
|---|---|
|
Use Scenario: Isolating MCU PWM signals and current-sense feedback between low-voltage control domain and 400–800 V DC-DC stage. IC Role / Device Role / Timing Role: Bidirectional signal isolator for gate driver enable/disable and isolated ADC sampling clock distribution. Use Value: 10 ns propagation delay ensures <1% timing skew across 4 isolated channels, maintaining synchronous switching in interleaved PFC stages. |
Use Scenario: Communicating cell voltage measurements and pack-level fault status between isolated slave monitors and master controller. IC Role / Device Role / Timing Role: High-CMTI digital isolator for SPI bus extension between isolated ADCs and host MCU. Use Value: 100 kV/µs transient immunity prevents communication corruption during load dump or relay bounce events. |
| Traction Inverter Feedback | Industrial Motor Drive |
|
Use Scenario: Transmitting IGBT/SiC gate driver status and desaturation fault signals from high-side power stage to low-voltage protection logic. IC Role / Device Role / Timing Role: Fail-safe isolator with default-low output ensuring safe shutdown when VDD fails during overcurrent events. Use Value: Reinforced 6000 VRMS rating supports 1200 V SiC systems with margin for surge transients per ISO 61000-4-5. |
Use Scenario: Isolating encoder quadrature signals and resolver excitation outputs in servo drives operating in factory EMI environments. IC Role / Device Role / Timing Role: Low-jitter digital isolator preserving edge integrity for position loop closure at >100 kHz update rates. Use Value: 3.5 ns pulse width distortion minimizes phase error in high-resolution position sensing (<0.01° accuracy). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8642ED-IS1 | Higher power consumption (≈0.25 mA/channel more), no low-power optimization; same pinout and specs otherwise. | Preferred where timing performance (e.g., <8 ns delay) is prioritized over quiescent current in non-battery systems. | Choose SI8642ED-IS1 only if system-level power budget allows higher IDD and timing margins are tighter than 10 ns. |
| ADUM2402BRWZ | Lower isolation rating (5000 VRMS), no AEC-Q100 qualification, different pinout (SOIC-16 WB), 25 ns propagation delay. | Suitable for industrial automation but not automotive-grade 800 V systems requiring reinforced insulation and automotive qualification. | Select ADUM2402BRWZ only for cost-sensitive, non-automotive designs where 5000 VRMS and Grade 0 temperature range suffice. |
Compared with SI86SL42FC-IS1, SI8642ED-IS1 trades lower power for marginally better timing, while ADUM2402BRWZ offers broader distributor availability but lacks automotive qualification and 6000 VRMS isolation - making SI86SL42FC-IS1 the optimal choice for AEC-Q100-compliant, high-voltage battery systems.
Availability
SI86SL42FC-IS1 is available at Aetrix Electronics and suitable for onboard chargers, battery management systems, and traction inverters requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for SI86SL42FC-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 for high-reliability applications.
The Si86Sxx family - including SI86SL42FC-IS1 - was engineered specifically for automotive and industrial isolation needs, emphasizing AEC-Q100 compliance, reinforced safety certification, and robustness in high-dV/dt, high-temperature environments.
FAQ
What is the isolation voltage rating of SI86SL42FC-IS1?
SI86SL42FC-IS1 provides 6000 VRMS reinforced isolation per UL 1577 for 1 minute, certified to IEC 60747-17. This rating is validated for narrow-body SOIC-16 packaging and supports safety-critical applications in 800 V battery electric vehicles and industrial inverters where creepage and clearance must meet stringent regulatory requirements.
Does SI86SL42FC-IS1 require external configuration or initialization at power-up?
No, SI86SL42FC-IS1 uses RF-based on/off keying and requires no firmware, register writes, or startup sequence. Outputs become valid within 0.3 ms after VDD exceeds UVLO+ (2.18 V typical), with built-in 100 kΩ pulldown during undervoltage - ensuring deterministic behavior in safety-critical automotive subsystems without software dependency.
How does the fail-safe mode operate in SI86SL42FC-IS1?
SI86SL42FC-IS1 is ordered with default-low fail-safe mode: when either VDD1 or VDD2 drops below UVLO– (2.05 V typical), outputs on the powered side default to logic low. This prevents undefined states in BMS fault signaling and gate driver disable paths, aligning with ISO 26262 ASIL-B requirements for controlled shutdown behavior.
What is the maximum data rate supported by SI86SL42FC-IS1?
SI86SL42FC-IS1 supports up to 150 Mbps per channel, verified across –40 °C to +125 °C with 5.0 V supply. This enables high-speed isolated communication for SPI, digital encoder interfaces, and fast ADC/DAC links - critical for real-time torque control loops in electric powertrains where latency must remain below 100 ns.
Is SI86SL42FC-IS1 pin-compatible with other Si86S64x/L4x devices?
Yes, SI86SL42FC-IS1 shares identical NB SOIC-16 pinout and electrical interface with Si86S64x/L4x family members (e.g., SI8642ED-IS1), including VDD1/GND1/A1–A4/EN1 on side A and VDD2/GND2/B1–B4/EN2 on side B. This allows drop-in replacement where low-power operation is prioritized over marginal timing gains.
SI86SL42FC-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- -
- Type:
- -
- Isolated Power:
- -
- Number of Channels:
- -
- Inputs - Side 1/Side 2:
- -
- Channel Type:
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- Voltage - Isolation:
- -
- Common Mode Transient Immunity (Min):
- -
- Data Rate:
- -
- Propagation Delay tpLH / tpHL (Max):
- -
- Pulse Width Distortion (Max):
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- Rise / Fall Time (Typ):
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- Voltage - Supply:
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- Grade:
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- Qualification:
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- Operating Temperature:
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- Mounting Type:
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- Supplier Device Package:
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SI86SL42FC-IS1 FAQ
1.How can I place an order for SI86SL42FC-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SL42FC-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 SI86SL42FC-IS1 reliable?
The price and inventory of SI86SL42FC-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SL42FC-IS1 is usually 5 days.
3.What payment methods are accepted for SI86SL42FC-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SL42FC-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SL42FC-IS1?
SI86SL42FC-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SL42FC-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 SI86SL42FC-IS1?
For technical support, including SI86SL42FC-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SL42FC-IS1 requirements.
6.How does Aetrix verify that SI86SL42FC-IS1 is sourced from the original manufacturer or authorized distributors?
All SI86SL42FC-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 SI86SL42FC-IS1 meets industry standards.
7.What is the process for return or replacement of SI86SL42FC-IS1?
All SI86SL42FC-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI86SL42FC-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 SI86SL42FC-IS1 part is unused and in its original packaging.
Return procedure for SI86SL42FC-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SL42FC-IS1 Tags
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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
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ISO7741FDWR
Texas Instruments
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