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Skyworks Solutions Inc. SI86SL41EC-IS1R
- Part No.:
- SI86SL41EC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SL41EC-IS1R.pdf
- Description:
- 3.75 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:2,611
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Product details
Overview
SI86SL41EC-IS1R from Skyworks Solutions is a 4-channel, low-power digital isolator with reinforced isolation (6000 VRMS), operating from 2.25 to 5.5 V and supporting data rates up to 150 Mbps. It features two forward and two reverse unidirectional channels, Schmitt-trigger CMOS inputs, and selectable fail-safe output state (default-low in this variant). It is used in isolated ADC/DAC interfaces and motor control gate driver circuits where high CMTI and low quiescent power are critical.
For engineers reviewing the SI86SL41EC-IS1R datasheet, SI86SL41EC-IS1R pinout, SI86SL41EC-IS1R application, or SI86SL41EC-IS1R equivalent, key selection criteria include its 6000 VRMS reinforced insulation per UL 1577 and IEC 60747-17, 10 ns typical propagation delay, –40 to 125 °C automotive-grade temperature range, AEC-Q100 qualification, and SOIC-16 wide-body package with 8.3 mm creepage/clearance.
Technical Context
The SI86SL41EC-IS1R 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 independent side-A and side-B undervoltage lockout (UVLO) with 2.18 V rising threshold and 2.05 V falling threshold, plus reset detection at ~1.7 V.
This variant belongs to the Si86SLx low-power subfamily: it consumes ~0.25 mA/channel less quiescent current than Si86S6x counterparts while retaining identical pinout and functional behavior. It does not include sleep mode (SMb) or SPI/QSPI-specific pins - confirming it is a general-purpose 4-channel isolator with fixed directionality (A1→B1, A2→B2, B3→A3, B4→A4).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated UART, RS-485 transceiver control, and fast GPIO signaling. |
| Isolation rating | 6000 VRMS for 1 minute - enables use in reinforced insulation systems per IEC 62368-1 and IEC 60601-1 medical/safety standards. |
| Propagation delay | 10 ns typical - ensures tight timing alignment in feedback loops for motor control and isolated power supply regulation. |
| Supply voltage | 2.25 to 5.5 V - allows direct interface with 3.3 V and 5 V logic domains without level-shifting circuitry. |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive applications and industrial environments with thermal stress. |
| CMTI | 100 kV/µs minimum - prevents false triggering during fast-switching events in inverters and SiC/GaN gate drive circuits. |
| Fail-safe mode | Default-low output - outputs remain logic low during side-A power loss, ensuring safe shutdown of downstream drivers. |
Pinout & Package
SI86SL41EC-IS1R uses a WB SOIC-16 (wide-body SOIC-16) package with 8.3 mm creepage and clearance, rated for 6000 VRMS isolation. Pin numbering follows standard SOIC-16 layout (pin 1 = VDD1, pin 16 = VDD2), with internal HF transmitter/receiver pairs assigned per channel.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides bias for input-side logic and RF transmitter; requires 0.1 µF + 10 µF bypassing per side. |
| A1, A2 | Input channels (forward) | Digital inputs driving isolated outputs B1 and B2; accept CMOS/Schmitt thresholds (VIH ≥ 0.7×VDD1). |
| B3, B4 | Input channels (reverse) | Digital inputs driving isolated outputs A3 and A4; enable bidirectional signal flow across barrier. |
| B1, B2 | Output channels (forward) | Isolated outputs referenced to VDD2/GND2; 50 Ω nominal output impedance for controlled-impedance routing. |
| A3, A4 | Output channels (reverse) | Isolated outputs referenced to VDD1/GND1; tri-state capable via EN1/EN2 (not present on this variant per datasheet family mapping). |
| VDD2, GND2 | Side B power supply | Provides bias for output-side logic and RF receiver; independent of VDD1 for true galvanic isolation. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift; achieves stable 150 Mbps operation across –40 to 125 °C without calibration. |
| Reinforced insulation | 6000 VRMS withstand per UL 1577 and IEC 60747-17 - certified for medical (60601-1) and industrial safety-critical systems. |
| Low-power optimization | ~0.25 mA/channel lower quiescent current vs. Si86S6x - reduces thermal load in dense PCB layouts and extends battery life in portable isolators. |
| Fail-safe default-low | Guarantees B1/B2 remain low during VDD1 brownout - prevents unintended activation of high-side MOSFETs or IGBTs in motor drives. |
| High CMTI | ≥100 kV/µs common-mode transient immunity - maintains signal integrity in noisy 100+ kHz switching environments (e.g., SiC inverters). |
Applications
| Isolated ADC Interface | Motor Control Gate Driver |
|---|---|
|
Use Scenario: Isolating serial data lines between a microcontroller and a precision isolated ADC (e.g., AD7403) in a Class I medical power supply. IC Role / Device Role / Timing Role: SI86SL41EC-IS1R transmits clock and data across isolation barrier with <10 ns skew, preserving sampling accuracy and SNR. Use Value: Enables 16-bit resolution measurement without ground-loop noise or offset drift, meeting IEC 60601-1 creepage requirements. |
Use Scenario: Providing isolated gate drive signals to high-side and low-side IGBTs in a 3-phase inverter for EV traction motor control. IC Role / Device Role / Timing Role: SI86SL41EC-IS1R delivers synchronized PWM edges (A1→B1, A2→B2) with matched propagation delay to prevent shoot-through. Use Value: 100 kV/µs CMTI prevents false turn-on during 10 kV/µs bus transients, improving system reliability in 800 V battery architectures. |
| Onboard Charger (OBC) Feedback | Battery Management System (BMS) |
|
Use Scenario: Isolating voltage/current sense feedback from secondary-side DC-DC converter to primary-side controller in an automotive OBC. IC Role / Device Role / Timing Role: SI86SL41EC-IS1R carries analog-to-digital status bits and fault flags across 6000 VRMS barrier with fail-safe low default. Use Value: Default-low behavior ensures controller disables charging upon primary-side power loss, satisfying ISO 6469-3 functional safety requirements. |
Use Scenario: Isolating cell monitoring IC (e.g., BQ79616) communication lines from MCU in high-voltage battery packs (up to 900 V). IC Role / Device Role / Timing Role: SI86SL41EC-IS1R routes daisy-chained UART commands and telemetry with 150 Mbps capability for fast cell balancing updates. Use Value: AEC-Q100 Grade 0 qualification and –40 to 125 °C operation ensure long-term reliability in under-hood BMS modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8641ED-IS1R | Same pinout and 4-channel forward/reverse topology, but higher power consumption (~0.25 mA/channel more) and no low-power optimization. | Suitable for non-thermal-constrained designs where timing margin >10 ns is acceptable and power budget allows. | Select SI8641ED-IS1R only if legacy design reuse or cost sensitivity outweighs efficiency gains of SI86SL41EC-IS1R. |
| ADUM4401BRWZ | 4-channel, 100 Mbps, 5000 VRMS, SOIC-16; uses iCoupler capacitive isolation; lacks AEC-Q100 qualification and 6000 VRMS rating. | Applicable in industrial automation but not automotive or medical systems requiring reinforced 6000 VRMS or AEC-Q100. | Choose ADUM4401BRWZ for cost-sensitive industrial PLCs where 5000 VRMS suffices and automotive qualification is unnecessary. |
Compared with SI8641ED-IS1R and ADUM4401BRWZ, SI86SL41EC-IS1R uniquely combines AEC-Q100 qualification, 6000 VRMS reinforced isolation, and low-power operation - making it the only option qualified for automotive onboard chargers and medical isolated power supplies requiring both safety and efficiency.
Availability
SI86SL41EC-IS1R is available at Aetrix Electronics and suitable for industrial automation systems, battery management systems, and isolated switch mode supplies requiring stable component supply and long-term lifecycle support.
Supply support for SI86SL41EC-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.
The Si86Sxx family - including SI86SL41EC-IS1R - was designed for high-reliability, safety-critical isolation in automotive, medical, and industrial power systems, emphasizing reinforced insulation, AEC-Q100 compliance, and RF-based noise immunity.
FAQ
What is the isolation voltage rating of SI86SL41EC-IS1R and which safety standards does it meet?
SI86SL41EC-IS1R provides 6000 VRMS isolation for 1 minute per UL 1577 and meets reinforced insulation requirements per IEC 60747-17. It is certified to CSA 62368-1 and 60601-1, and CQC GB4943.1 - making SI86SL41EC-IS1R suitable for medical equipment, industrial inverters, and automotive onboard chargers requiring highest-level galvanic separation.
Does SI86SL41EC-IS1R support bidirectional communication on all four channels?
No. SI86SL41EC-IS1R has two forward channels (A1→B1, A2→B2) and two reverse channels (B3→A3, B4→A4), enabling full bidirectional data flow across the isolation barrier - but each channel is unidirectional. SI86SL41EC-IS1R does not support dynamic direction reversal like Si86SQ44; direction is fixed by pin assignment.
What is the default output state of SI86SL41EC-IS1R during power loss on the input side?
SI86SL41EC-IS1R is ordered with default-low fail-safe mode: when VDD1 is unpowered or below UVLO threshold (2.18 V), outputs B1 and B2 remain logic low while VDD2 is powered. This behavior is hard-coded per ordering option and ensures safe shutdown in motor control and power supply applications.
Is SI86SL41EC-IS1R compatible with 3.3 V and 5 V logic families?
Yes. SI86SL41EC-IS1R operates from 2.25 V to 5.5 V on both sides, with CMOS-compatible input thresholds (VIH ≥ 0.7×VDD, VIL ≤ 0.3×VDD) and rail-to-rail outputs. It interfaces directly with 3.3 V microcontrollers and 5 V peripheral ICs without external level shifters - a key feature confirmed in SI86SL41EC-IS1R's recommended operating conditions table.
What packaging and creepage specifications apply to SI86SL41EC-IS1R?
SI86SL41EC-IS1R uses a WB SOIC-16 package with 8.3 mm minimum creepage and clearance, enabling 6000 VRMS isolation. This wide-body construction satisfies reinforced insulation requirements for IEC 62368-1 and IEC 60601-1 end-equipment standards - critical for SI86SL41EC-IS1R deployment in medical and high-voltage industrial systems.
SI86SL41EC-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):
- 100kV/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:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86SL41EC-IS1R FAQ
1.How can I place an order for SI86SL41EC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SL41EC-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 SI86SL41EC-IS1R reliable?
The price and inventory of SI86SL41EC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SL41EC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86SL41EC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SL41EC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SL41EC-IS1R?
SI86SL41EC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SL41EC-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 SI86SL41EC-IS1R?
For technical support, including SI86SL41EC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SL41EC-IS1R requirements.
6.How does Aetrix verify that SI86SL41EC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86SL41EC-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 SI86SL41EC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86SL41EC-IS1R?
All SI86SL41EC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SL41EC-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 SI86SL41EC-IS1R part is unused and in its original packaging.
Return procedure for SI86SL41EC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SL41EC-IS1R Tags
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