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Skyworks Solutions Inc. SI86SL42EE-IS2R
- Part No.:
- SI86SL42EE-IS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86SL42EE-IS2R.pdf
- Description:
- 6.0 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:4,599
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Product details
Overview
SI86SL42EE-IS2R 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 two forward and two reverse signal paths across an RF-based semiconductor isolation barrier, operates from 2.25–5.5 V on both sides, and supports fail-safe default-high output mode. It is used in battery management systems and traction inverters where high noise immunity and precise timing are critical.
For engineers reviewing the SI86SL42EE-IS2R datasheet, SI86SL42EE-IS2R pinout, SI86SL42EE-IS2R application, or SI86SL42EE-IS2R equivalent, key selection criteria include its 10 ns typical propagation delay, 3.5 ns pulse width distortion, 100 kV/µs CMTI, sleep-mode enable (SMb), and WB SOIC-16 package with 8.3 mm creepage for reinforced insulation compliance.
Technical Context
The SI86SL42EE-IS2R implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier, eliminating startup initialization and enabling robust operation without optical degradation. Its architecture delivers deterministic timing with 10 ns propagation delay and 3.5 ns pulse width distortion, while supporting independent 2.25–5.5 V supplies on isolated sides.
It integrates Schmitt-trigger + CMOS threshold inputs for noise immunity, tri-state outputs with EN1/EN2 control, and a dedicated SMb pin that places the device into 750 µA/side sleep mode while retaining one active channel to monitor SMb state. Fail-safe behavior defaults outputs high during unpowered conditions on the input side.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces including SPI and isolated ADC/DAC links without protocol translation. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for safety-critical automotive and industrial applications. |
| Propagation delay | 10 ns (typical) - enables tight timing budgets in motor control PWM feedback and real-time BMS cell monitoring loops. |
| Pulse width distortion | 3.5 ns (typical) - preserves duty cycle integrity for clock distribution and synchronous communication across isolation boundary. |
| CMTI | ≥100 kV/µs - ensures reliable operation in high-dV/dt environments like traction inverters and isolated switch-mode power supplies. |
| Supply voltage | 2.25–5.5 V per side - allows direct interfacing with 3.3 V and 5 V logic domains without level-shifting circuitry. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive use and industrial ambient conditions without derating. |
Pinout & Package
SI86SL42EE-IS2R is housed in a wide-body SOIC-16 (WB SOIC-16) package with 8.3 mm creepage and 10.3 mm clearance, certified for 6000 VRMS reinforced insulation per UL 1577 and IEC 60747-17.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply pair | Provides bias for forward channels (A1–A4); independent of Side B, enabling dual-domain operation. |
| VDD2, GND2 | Side B power supply pair | Biases reverse channels (B1–B4); galvanically isolated from Side A to break ground loops in high-noise systems. |
| A1–A4 | Side A digital I/O | Four input/output pins on main side; configurable as inputs or outputs depending on direction control scheme. |
| B1–B4 | Side B digital I/O | Four isolated output/input pins; electrically separated from Side A to prevent fault propagation in BMS or inverter subsystems. |
| SMb | Sleep mode control | Active-low pin that reduces total current to 750 µA/side while maintaining wake-up capability via internal monitoring channel. |
| NC | No-connect terminal | Pin 9 is internally unused; must be left floating or tied to GND per layout guidelines to avoid parasitic coupling. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift issues of optocouplers; provides stable 150 Mbps performance over full temperature range. |
| Fail-safe default-high output | Ensures known logic state at B1–B4 during VDD1 loss-critical for safe shutdown sequencing in battery management systems. |
| Schmitt-trigger + CMOS thresholds | Rejects >36 ns noise pulses and tolerates slow-rising signals from isolated sensors or gate drivers without external filtering. |
| Tri-state outputs with EN1/EN2 | Allows bus sharing across multiple isolators on same PCB net; enables hot-swap and modular system design in EV charging stations. |
| Low-power optimized design | Consumes 0.25 mA/channel less quiescent current than Si86S6x counterparts-extends runtime in always-on vehicle subsystems. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring and balancing signals between high-voltage battery stack and low-voltage MCU domain. IC Role / Device Role / Timing Role: SI86SL42EE-IS2R transmits analog-to-digital converter results and command signals across 400–800 V potential difference with sub-10 ns timing fidelity. Use Value: Enables accurate SOC estimation and thermal runaway prevention by preserving signal integrity amid 100+ kV/µs switching transients from adjacent IGBTs. |
Use Scenario: Transmitting PWM gate drive commands and fault feedback between inverter controller and isolated gate driver stage. IC Role / Device Role / Timing Role: SI86SL42EE-IS2R carries dead-time-critical PWM edges and DESAT fault signals with ≤3.5 ns pulse width distortion. Use Value: Prevents shoot-through in SiC MOSFET half-bridges by ensuring matched propagation delays across all four gate drive channels. |
| Onboard Charger (OBC) | Industrial PLC I/O Module |
|
Use Scenario: Isolating digital control signals between AC/DC front-end controller and DC/DC secondary-side regulation stage. IC Role / Device Role / Timing Role: SI86SL42EE-IS2R relays communication (UART/SPI) and status flags across reinforced barrier in compact OBC designs. Use Value: Supports 6000 VRMS working voltage compliance required for UL 62368-1 certification in Class II consumer EV charging equipment. |
Use Scenario: Providing channel-isolated digital input/output for field devices in factory automation cabinets exposed to 2 kV surge events. IC Role / Device Role / Timing Role: SI86SL42EE-IS2R interfaces 24 V DC sensor inputs and 24 V relay outputs while rejecting common-mode noise from VFDs and solenoids. Use Value: Delivers 100 kV/µs CMTI margin exceeding IEC 61000-4-4 Level 4, reducing spurious trips in harsh industrial EMI environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM141D1BRWZ | 4-channel, 150 Mbps, 5000 VRMS, 10 ns propagation delay; uses iCoupler capacitive isolation; no SMb pin or fail-safe high option. | Lacks AEC-Q100 qualification and reinforced 6000 VRMS rating; suitable for industrial but not automotive safety-critical use. | Select when cost-sensitive industrial designs require proven capacitive isolation without automotive qualification or sleep mode. |
| ISO7741FDWR | 4-channel, 100 Mbps, 5000 VRMS, 11 ns propagation delay; uses capacitive isolation; supports default-low fail-safe only. | Lower data rate and isolation rating; no sleep mode or AEC-Q100 support; RoHS-compliant but not automotive-grade flow. | Choose for non-automotive applications where 100 Mbps suffices and 5000 VRMS meets system-level safety requirements. |
Compared with ADUM141D1BRWZ and ISO7741FDWR, SI86SL42EE-IS2R uniquely combines AEC-Q100 qualification, 6000 VRMS reinforced isolation, fail-safe high output, and SMb-controlled sleep mode-making it the only option qualified for ISO 26262 ASIL-B compliant BMS and traction inverter subsystems.
Availability
SI86SL42EE-IS2R is available at Aetrix Electronics and suitable for battery management systems, traction inverters, onboard chargers, and industrial PLC I/O modules requiring stable component supply across automotive and industrial product lifecycles.
Supply support for SI86SL42EE-IS2R 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 markets.
The Si86Sxx family-including SI86SL42EE-IS2R-is engineered for automotive and industrial isolation applications demanding reinforced safety ratings, ultra-low CMTI, and long-term reliability under extreme thermal and electrical stress.
FAQ
What is the isolation rating and safety certification status of SI86SL42EE-IS2R?
SI86SL42EE-IS2R provides 6000 VRMS reinforced isolation per UL 1577 (1 minute) and complies with IEC 60747-17, CSA 62368-1/60601-1, and CQC GB4943.1. It is AEC-Q100 qualified for automotive use and rated for –40 to +125 °C operation. The WB SOIC-16 package achieves 8.3 mm creepage to meet reinforced insulation requirements in high-voltage systems such as battery management and traction inverters. SI86SL42EE-IS2R is designed for end-equipment certification under IEC 61010-1 and IEC 62368-1.
Does SI86SL42EE-IS2R support fail-safe operation, and how is it configured?
Yes, SI86SL42EE-IS2R supports selectable fail-safe mode: default-high output during input-side power loss. This behavior is fixed by ordering code (the "E" in SI86SL42EE-IS2R denotes default-high). When VDD1 falls below UVLO– (~2.05 V), outputs B1–B4 are driven high if VDD2 remains powered. This ensures safe shutdown states in battery management systems where high-level signals trigger protective actions. SI86SL42EE-IS2R does not support field-selectable fail-safe polarity-it is determined at manufacture.
How does the SMb pin function in SI86SL42EE-IS2R, and what power savings does it enable?
The SMb pin in SI86SL42EE-IS2R is an active-low sleep mode control that reduces total supply current to 750 µA per side (1.5 mA total) while maintaining wake-up capability. When SMb is pulled low, all transmitter circuits disable except one dedicated monitoring channel that continuously samples SMb. Upon detection of a high transition or open state, the device fully powers up within microseconds. SI86SL42EE-IS2R uses this feature to minimize standby power in always-on vehicle subsystems without sacrificing responsiveness.
What are the timing specifications of SI86SL42EE-IS2R, and how do they impact system design?
SI86SL42EE-IS2R delivers 10 ns typical propagation delay and 3.5 ns typical pulse width distortion across all four channels, with guaranteed max values specified over temperature and voltage. These specs enable precise synchronization in closed-loop motor control and high-resolution ADC sampling. For example, in a traction inverter, matching delays across all gate drive channels prevent timing skew that could cause shoot-through. SI86SL42EE-IS2R's low jitter and deterministic latency eliminate need for calibration or deskew firmware in time-critical automotive subsystems.
Can SI86SL42EE-IS2R be used in SPI isolation applications, and which pins support that interface?
SI86SL42EE-IS2R is not a dedicated SPI isolator (e.g., Si86SSxx series) and lacks built-in SPI protocol logic or dedicated MISO/MOSI pin mapping. However, its four bidirectional channels can be manually configured for SPI signal routing-A1/A2 for SCLK/CS, A3/A4 for MOSI/MISO-with B1–B4 carrying isolated signals. External logic is required to manage direction and timing. For native SPI isolation, Skyworks recommends Si86SS41 or Si86SS51; SI86SL42EE-IS2R serves best in general-purpose digital isolation where flexibility and automotive qualification outweigh protocol-specific optimization.
SI86SL42EE-IS2R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm 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:
- 6000Vrms
- 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
SI86SL42EE-IS2R FAQ
1.How can I place an order for SI86SL42EE-IS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SL42EE-IS2R 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 SI86SL42EE-IS2R reliable?
The price and inventory of SI86SL42EE-IS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SL42EE-IS2R is usually 5 days.
3.What payment methods are accepted for SI86SL42EE-IS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SL42EE-IS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SL42EE-IS2R?
SI86SL42EE-IS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SL42EE-IS2R 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 SI86SL42EE-IS2R?
For technical support, including SI86SL42EE-IS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SL42EE-IS2R requirements.
6.How does Aetrix verify that SI86SL42EE-IS2R is sourced from the original manufacturer or authorized distributors?
All SI86SL42EE-IS2R 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 SI86SL42EE-IS2R meets industry standards.
7.What is the process for return or replacement of SI86SL42EE-IS2R?
All SI86SL42EE-IS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SL42EE-IS2R, 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 SI86SL42EE-IS2R part is unused and in its original packaging.
Return procedure for SI86SL42EE-IS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SL42EE-IS2R 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
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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
Texas Instruments
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ISO7741FDWR
Texas Instruments
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