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Skyworks Solutions Inc. SI86SL42BC-IS1R
- Part No.:
- SI86SL42BC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SL42BC-IS1R.pdf
- Description:
- 3.75 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:1,487
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Product details
Overview
SI86SL42BC-IS1R from Skyworks Solutions is a 4-channel, low-power digital isolator with reinforced isolation (6000 VRMS), operating from 2.25 V to 5.5 V and supporting data rates up to 150 Mbps. It features two forward and two reverse isolated channels, selectable fail-safe output (default-low), and AEC-Q100 qualification for automotive use in battery management systems and traction inverters.
For engineers reviewing the SI86SL42BC-IS1R datasheet, SI86SL42BC-IS1R pinout, SI86SL42BC-IS1R application, or SI86SL42BC-IS1R equivalent, key selection criteria include its 6000 VRMS reinforced insulation per UL 1577 and VDE 60747-17, 10 ns typical propagation delay, –40 °C to 125 °C operation, and sleep-mode capability via SMb pin for power-sensitive designs.
Technical Context
The SI86SL42BC-IS1R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity (100 kV/µs CMTI). Its architecture supports independent undervoltage lockout (UVLO) and reset monitoring on both sides (VDD1/VDD2), with RSTB thresholds at ~1.7 V for reliable configuration reload during brownout.
This device belongs to the Si86SLx subfamily optimized for lower quiescent current versus Si86S6x-reducing ~0.25 mA/channel-while retaining identical pinout and functional compatibility. It includes Schmitt-trigger + CMOS-threshold inputs, tri-state outputs with EN1/EN2 control, and failsafe default-low output behavior confirmed by ordering code "BC".
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 timing bottlenecks. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577 and VDE 60747-17 for industrial and automotive safety-critical systems. |
| Propagation delay | 10 ns (typical) - enables precise timing alignment in motor control gate drivers and real-time feedback loops. |
| Supply voltage | 2.25 V to 5.5 V - allows direct interfacing with 3.3 V and 5 V logic domains without level-shifting circuitry. |
| Operating temperature | –40 °C to 125 °C - qualified for under-hood automotive applications and industrial environments with wide thermal excursions. |
| Fail-safe mode | Default-low output - ensures predictable low-state behavior during power loss on Side A, critical for safe shutdown in BMS and inverters. |
| Transient immunity | ≥100 kV/µs - provides immunity against fast-rising EFT and switching noise in high-dv/dt power electronics. |
Pinout & Package
SI86SL42BC-IS1R is housed in a narrow-body SOIC-16 (NB SOIC-16) package with 8.0 mm creepage/clearance, compliant with RoHS and rated for 6000 VRMS isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A supply and ground | Power domain for input-side logic (A1–A4, EN1, SMb); must be bypassed with 0.1 µF + 10 µF capacitors. |
| A1–A4 | Side A digital I/O | Four bidirectional signal lanes; direction determined by external control logic (not internal DIR pin - distinct from Si86SQ44). |
| EN1 | Side A output enable | Active-high control: drives all Side A outputs into high-impedance when low; used for bus arbitration or power sequencing. |
| SMb | Sleep mode control | Active-low pin: pulls device into sleep mode (750 µA/side) while retaining one active channel to monitor SMb state for wake-up. |
| Isolation Barrier | Die-level separation | Robust semiconductor barrier enabling 6000 VRMS withstand and reinforced insulation certification per IEC 60747-17. |
| B1–B4 | Side B digital I/O | Four isolated output lanes corresponding to A1–A4; electrically decoupled from Side A with full common-mode transient immunity. |
| EN2 | Side B output enable | Active-high control: places Side B outputs in high-Z state independently of EN1, enabling dual-domain power management. |
| VDD2, GND2 | Side B supply and ground | Independent power domain for output-side logic; supports separate 3.3 V/5 V rails and asynchronous operation. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates startup initialization delay and optical degradation concerns; achieves 10 ns propagation delay with no calibration required. |
| Reinforced safety certification | UL 1577 (6000 VRMS), VDE 60747-17, CSA 62368-1/60601-1 - enables single-component compliance for medical and EV traction systems. |
| Low-power optimization | ~0.25 mA/channel lower quiescent current than Si86S6x counterparts - extends battery life in always-on automotive monitoring circuits. |
| Selectable fail-safe output | "BC" suffix denotes default-low behavior during VDD1 undervoltage - prevents unintended activation of downstream MOSFET gates or relays. |
| Sleep mode with wake-on-event | SMb pin reduces total current to 750 µA/side while maintaining one active RF channel to detect wake-up signal - ideal for intermittent sensor polling. |
Applications
| Battery Management Systems (BMS) | Traction Inverters |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring and pack communication between high-voltage battery stack and low-voltage MCU. IC Role / Device Role / Timing Role: Provides galvanic isolation for analog front-end ADC signals and digital status reporting across 400–800 V DC bus. Use Value: Enables accurate, noise-immune measurement using its 100 kV/µs CMTI and 6000 VRMS rating - critical for ASIL-D functional safety compliance. |
Use Scenario: Isolating gate drive signals and fault feedback between inverter control unit and IGBT/SiC modules. IC Role / Device Role / Timing Role: Transmits PWM commands and desaturation fault signals with <10 ns propagation delay skew across four channels. Use Value: Maintains tight timing margins in high-frequency switching (e.g., 20 kHz+ SiC inverters) while meeting reinforced insulation requirements for ISO 26262. |
| Industrial PLC I/O Modules | Medical Imaging Power Supplies |
|
Use Scenario: Digitally isolating fieldbus interface (e.g., RS-485, CAN) and digital I/O expansion in programmable logic controllers. IC Role / Device Role / Timing Role: Acts as a bidirectional signal isolator for control and status lines between microcontroller and isolated I/O banks. Use Value: Supports 150 Mbps data rate for high-throughput diagnostics and firmware updates, with fail-safe default-low preventing spurious actuator activation. |
Use Scenario: Isolating feedback and control signals in high-reliability X-ray generator power supplies. IC Role / Device Role / Timing Role: Separates primary-side controller from secondary-side HV sensing and regulation circuitry in isolated DC-DC converters. Use Value: Meets reinforced insulation per IEC 60601-1 and provides 125 °C operation for compact, convection-cooled medical enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8642BB-IS1R | Same 4-channel, NB SOIC-16 package and pinout, but higher power consumption (~0.25 mA/channel more) and no sleep mode (SMb pin absent). | Preferred where maximum data rate stability is prioritized over ultra-low quiescent current; lacks SMb-driven power gating. | Select SI8642BB-IS1R only if sleep mode is unnecessary and marginally better timing specs (e.g., PWD = 3.5 ns vs 4.0 ns typ) are required. |
| ADUM4402ARWZ | 4-channel, SOIC-16, 5 kVRMS isolation, 100 Mbps max, no sleep mode, different pin assignment (no SMb, EN pins mapped differently). | Requires PCB redesign due to non-pin-compatible layout; lacks AEC-Q100 qualification and 6000 VRMS rating. | Consider ADUM4402ARWZ only for legacy designs already using Analog Devices' iCoupler architecture and where 5 kVRMS suffices. |
Compared with SI8642BB-IS1R and ADUM4402ARWZ, SI86SL42BC-IS1R uniquely combines AEC-Q100 qualification, 6000 VRMS reinforced isolation, and hardware-enabled sleep mode - making it the only option qualified for automotive BMS and traction inverter subsystems requiring both safety and ultra-low standby power.
Availability
SI86SL42BC-IS1R is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and medical imaging power supplies requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI86SL42BC-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 leader in analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for wireless, automotive, and industrial markets.
The Si86Sxx family-including SI86SL42BC-IS1R-is engineered for high-reliability galvanic isolation in safety-critical systems, with emphasis on automotive (AEC-Q100), medical (IEC 60601-1), and industrial (IEC 62368-1) regulatory compliance.
FAQ
What is the isolation voltage rating of SI86SL42BC-IS1R and which safety standards does it meet?
SI86SL42BC-IS1R provides 6000 VRMS reinforced isolation for 1 minute per UL 1577 and complies with VDE 60747-17, CSA 62368-1, and IEC 60601-1. These certifications validate its use in high-voltage automotive and medical applications where double/reinforced insulation is mandated. The NB SOIC-16 package maintains 8.0 mm creepage and clearance to support these ratings.
Does SI86SL42BC-IS1R support fail-safe operation, and how is it configured?
Yes, SI86SL42BC-IS1R is ordered with default-low fail-safe behavior (denoted by "BC" in the part number). When VDD1 drops below UVLO– (~2.05 V), outputs B1–B4 are actively driven low as long as VDD2 remains powered. This behavior is factory-configured and requires no external components or configuration registers - ensuring deterministic safe state during power faults.
How does the SMb pin function in SI86SL42BC-IS1R, and what power savings does it enable?
The SMb pin in SI86SL42BC-IS1R is an active-low sleep mode control. When pulled low, it reduces total supply current to 750 µA per side while keeping one RF channel active to monitor SMb for wake-up. This enables rapid resumption (<1 µs) from sleep without reinitialization - delivering >90% quiescent power reduction versus normal operation in intermittently active systems like BMS cell monitors.
What are the key timing specifications of SI86SL42BC-IS1R, and how do they impact system design?
SI86SL42BC-IS1R delivers 10 ns typical propagation delay, 4.0 ns typical pulse width distortion, and <1 ns channel-to-channel skew. These values enable precise synchronization in high-speed motor control and isolated ADC sampling - allowing designers to eliminate external delay compensation and maintain tight setup/hold margins even at 150 Mbps data rates.
Is SI86SL42BC-IS1R pin-compatible with other devices in the Si86Sxx family, and which variants share the same footprint?
Yes, SI86SL42BC-IS1R uses the standard NB SOIC-16 footprint shared across Si86S64x, Si86SL4x, and Si86SM4x 4-channel variants. Pin assignments for VDD1, GND1, A1–A4, EN1, SMb, isolation barrier, B1–B4, EN2, GND2, and VDD2 match exactly - enabling drop-in replacement for functional upgrades (e.g., adding sleep mode) without PCB revision.
SI86SL42BC-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):
- 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
SI86SL42BC-IS1R FAQ
1.How can I place an order for SI86SL42BC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SL42BC-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 SI86SL42BC-IS1R reliable?
The price and inventory of SI86SL42BC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SL42BC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86SL42BC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SL42BC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SL42BC-IS1R?
SI86SL42BC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SL42BC-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 SI86SL42BC-IS1R?
For technical support, including SI86SL42BC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SL42BC-IS1R requirements.
6.How does Aetrix verify that SI86SL42BC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86SL42BC-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 SI86SL42BC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86SL42BC-IS1R?
All SI86SL42BC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SL42BC-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 SI86SL42BC-IS1R part is unused and in its original packaging.
Return procedure for SI86SL42BC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SL42BC-IS1R Tags
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