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Skyworks Solutions Inc. SI86SL40FC-IS1
- Part No.:
- SI86SL40FC-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SL40FC-IS1.pdf
- Description:
- 3.75 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:1,637
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Product details
Overview
SI86SL40FC-IS1 from Skyworks Solutions is a 4-channel, low-power digital isolator with reinforced 6000 VRMS isolation, 150 Mbps data rate, and AEC-Q100 qualification for automotive systems. It features Schmitt-trigger CMOS inputs, tri-state outputs with enable, selectable fail-safe default-high/low output, and operates across –40 to 125 °C with 2.25–5.5 V dual supplies. It is used in battery management systems and traction inverters where high noise immunity and safety-certified signal isolation are required.
For engineers reviewing the SI86SL40FC-IS1 datasheet, SI86SL40FC-IS1 pinout, SI86SL40FC-IS1 application, or SI86SL40FC-IS1 equivalent, key selection criteria include its 6000 VRMS reinforced insulation (IEC 60747-17), 10 ns typical propagation delay, 3.5 ns pulse width distortion, transient immunity ≥100 kV/µs, and sleep-mode support via SMb pin for ultra-low quiescent current in automotive power electronics.
Technical Context
The SI86SL40FC-IS1 implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture supports bidirectional channel operation with independent side-A and side-B undervoltage lockout (UVLO) and reset thresholds (RSTB± ~1.7 V), ensuring deterministic behavior during supply transients.
It integrates tri-state output control via EN1/EN2 pins and a dedicated active-low SMb pin that places the entire device-including isolated-side circuitry-into sleep mode (750 µA per side). Fail-safe output state (default high or low) is fixed by ordering option and latched during unpowered conditions on one side while the other remains powered.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed CAN FD, SPI, and gate driver signaling without protocol translation. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577, VDE 60747-17, and IEC 62368-1 for onboard chargers and BMS. |
| Propagation delay | 10 ns typical - enables precise timing-critical feedback loops in motor control and inverter gate drive circuits. |
| Pulse width distortion | 3.5 ns typical - ensures minimal duty cycle error in PWM-isolated signals for accurate power stage control. |
| Transient immunity | ≥100 kV/µs - suppresses fast common-mode noise from IGBT/SiC switching edges in traction inverters. |
| Supply voltage | 2.25–5.5 V per side - allows direct interface with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive environments per AEC-Q100 Grade 1. |
Pinout & Package
SI86SL40FC-IS1 is housed in a narrow-body SOIC-16 package (NB SOIC-16) with creepage/clearance compliant to reinforced insulation standards. Pin assignments follow the Si86S64x/L4x family layout, with four isolated channels, dual enable inputs (EN1/EN2), and an active-low sleep mode control (SMb).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power domain | Supplies and grounds the input-side logic; requires 0.1 µF + 10 µF bypass capacitors placed adjacent to pins. |
| A1–A4 | Side A digital I/O | Four unidirectional or bidirectional input channels; compatible with CMOS/Schmitt-trigger logic levels. |
| EN1 | Side A output enable | Active-high control: drives all Side A outputs into high-impedance when low, enabling bus sharing. |
| SMb | Sleep mode control | Active-low pin that shuts down internal RF transmitter/receiver circuits on both sides, reducing current to 750 µA/side. |
| Isolation Barrier | Die-level separation | Robust semiconductor barrier providing 6000 VRMS withstand, 100 kV/µs CMTI, and <10 ns propagation delay. |
| B1–B4 | Side B digital I/O | Four isolated output channels referenced to VDD2/GND2; electrically decoupled from Side A for ground-loop elimination. |
| EN2 | Side B output enable | Active-high control: places all Side B outputs in high-Z state, supporting multi-drop isolated bus architectures. |
| VDD2, GND2 | Side B power domain | Independent supply domain for output-side logic; enables galvanic separation between controller and power stage grounds. |
Key Features
| Feature | Design Value |
|---|---|
| No-startup initialization | RF modulation architecture eliminates boot-time delays or configuration sequences-output follows input immediately after UVLO exit. |
| Selectable fail-safe output | Ordering option fixes default output state (high or low) during VDD1/VDD2 brownout, preventing undefined gate driver states in BMS fault conditions. |
| Sleep mode via SMb | Reduces total quiescent current to 750 µA per side while retaining ability to wake on SMb edge-critical for always-on vehicle subsystems. |
| Tri-state outputs with EN1/EN2 | Enables shared isolated buses (e.g., SPI or CAN) by placing outputs in high-Z without disrupting isolation integrity or timing. |
| Reinforced IEC 60747-17 rating | Validated for functional safety applications up to 6000 VRMS, supporting ASIL-B/C system compliance in EV powertrain designs. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring ADCs and pack contactor control signals in high-voltage EV battery packs. IC Role / Device Role / Timing Role: SI86SL40FC-IS1 provides galvanically isolated digital communication between MCU (LV side) and isolated ADCs/contactors (HV side), preserving signal integrity at 150 Mbps. Use Value: 6000 VRMS isolation and 100 kV/µs CMTI prevent false triggering during high-dV/dt switching events, ensuring safe pack disconnection during faults. |
Use Scenario: Transmitting PWM gate drive signals from inverter MCU to isolated gate drivers in SiC-based traction inverters. IC Role / Device Role / Timing Role: SI86SL40FC-IS1 delivers sub-10 ns propagation delay and 3.5 ns pulse width distortion to preserve PWM fidelity across isolation barrier. Use Value: Enables precise dead-time control and minimizes shoot-through risk in high-frequency (>20 kHz) SiC switching, improving inverter efficiency. |
| Onboard Charger (OBC) | Charging Station Communication |
|
Use Scenario: Isolating digital control signals between primary-side PFC controller and secondary-side DC-DC converter in bidirectional OBCs. IC Role / Device Role / Timing Role: SI86SL40FC-IS1 handles bidirectional status, fault, and enable signals across two independent power domains with fail-safe defaults. Use Value: Reinforced insulation and AEC-Q100 qualification ensure reliability in thermally stressed OBC environments with frequent thermal cycling. |
Use Scenario: Isolating CAN FD communication lines between charging station controller and vehicle battery management unit. IC Role / Device Role / Timing Role: SI86SL40FC-IS1 isolates CAN TX/RX pairs and power-good signals while maintaining 150 Mbps capability for high-bandwidth diagnostics. Use Value: 100 kV/µs transient immunity prevents communication dropouts during lightning-induced surges or grid switching transients at public charging stations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4160BRWZ | 4-channel, 50 Mbps, 2500 VRMS, no sleep mode, 3.3 V only supply | Limited to industrial automation; lacks AEC-Q100 and 6000 VRMS for automotive HV systems | Choose ADUM4160BRWZ only for cost-sensitive non-automotive designs requiring basic USB isolation. |
| ISO7741FDWR | 4-channel, 100 Mbps, 5000 VRMS, no SMb pin, higher quiescent current (1.2 mA/channel) | Suitable for industrial PLCs but not certified for automotive traction systems per AEC-Q100 | Select ISO7741FDWR when 5000 VRMS suffices and sleep mode is unnecessary; avoid for BMS or OBC. |
Compared with ADUM4160BRWZ and ISO7741FDWR, SI86SL40FC-IS1 uniquely combines AEC-Q100 qualification, 6000 VRMS reinforced insulation, 150 Mbps speed, and hardware-controlled sleep mode-making it the only viable option for high-reliability automotive power electronics requiring extended thermal and electrical stress resilience.
Availability
SI86SL40FC-IS1 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and onboard chargers requiring stable component supply across automotive production lifecycles.
Supply support for SI86SL40FC-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 leader in high-performance analog semiconductors, specializing in RF, timing, and isolation solutions for wireless infrastructure, automotive, and industrial markets.
The Si86Sxx family-including SI86SL40FC-IS1-is engineered for safety-critical automotive and industrial isolation, emphasizing reinforced insulation, AEC-Q100 compliance, and ultra-low power operation without sacrificing speed or noise immunity.
FAQ
What is the isolation voltage rating of SI86SL40FC-IS1 and which safety standards does it meet?
SI86SL40FC-IS1 provides 6000 VRMS isolation for 1 minute per UL 1577 and is certified to IEC 60747-17 (reinforced insulation), IEC 62368-1, and IEC 60601-1. It meets CSA and CQC requirements for GB4943.1, making it suitable for high-voltage automotive applications including battery packs and inverters where reinforced insulation is mandated.
Does SI86SL40FC-IS1 support fail-safe output configuration, and how is it implemented?
Yes, SI86SL40FC-IS1 offers factory-configured fail-safe output: either default-high or default-low when one side's supply is unpowered while the other remains active. This behavior is fixed at manufacture and ensures predictable gate driver or ADC interface states during brownout conditions in SI86SL40FC-IS1-based BMS and inverter designs.
How does the SMb pin function in SI86SL40FC-IS1, and what power savings does it enable?
The SMb pin in SI86SL40FC-IS1 is an active-low input that places the entire device-including isolated-side circuitry-into sleep mode, reducing quiescent current to 750 µA per side. Unlike simple enable pins, SMb maintains wake-up capability via its own dedicated isolation path, enabling ultra-low-power always-on monitoring in SI86SL40FC-IS1 automotive subsystems.
What are the key timing specifications of SI86SL40FC-IS1 relevant to motor control applications?
SI86SL40FC-IS1 delivers 10 ns typical propagation delay and 3.5 ns typical pulse width distortion-critical for preserving PWM fidelity in motor control. These specs ensure minimal skew between complementary gate drive signals, directly supporting tight dead-time control and reduced shoot-through risk in SI86SL40FC-IS1-isolated inverter designs.
Is SI86SL40FC-IS1 compatible with standard SOIC-16 PCB footprints, and what package variant does it use?
Yes, SI86SL40FC-IS1 uses the narrow-body SOIC-16 (NB SOIC-16) package with 1.27 mm pitch and 10.3 mm × 7.5 mm body dimensions. It is footprint-compatible with industry-standard SOIC-16 layouts and meets IPC-7351B naming conventions, simplifying migration from legacy isolators in SI86SL40FC-IS1 designs.
SI86SL40FC-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 18ns, 18ns
- Pulse Width Distortion (Max):
- 7ns
- 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
SI86SL40FC-IS1 FAQ
1.How can I place an order for SI86SL40FC-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SL40FC-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 SI86SL40FC-IS1 reliable?
The price and inventory of SI86SL40FC-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SL40FC-IS1 is usually 5 days.
3.What payment methods are accepted for SI86SL40FC-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SL40FC-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SL40FC-IS1?
SI86SL40FC-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SL40FC-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 SI86SL40FC-IS1?
For technical support, including SI86SL40FC-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SL40FC-IS1 requirements.
6.How does Aetrix verify that SI86SL40FC-IS1 is sourced from the original manufacturer or authorized distributors?
All SI86SL40FC-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 SI86SL40FC-IS1 meets industry standards.
7.What is the process for return or replacement of SI86SL40FC-IS1?
All SI86SL40FC-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI86SL40FC-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 SI86SL40FC-IS1 part is unused and in its original packaging.
Return procedure for SI86SL40FC-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SL40FC-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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