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Skyworks Solutions Inc. SI86SM41BE-AS2R
- Part No.:
- SI86SM41BE-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86SM41BE-AS2R.pdf
- Description:
- 3.75 KVRMS SLEEP MODE ISOLATOR,
- Quantity:
- Payment:
- Shipping:
Inventory:3,234
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Product details
Overview
SI86SM41BE-AS2R from Skyworks Solutions is a 4-channel reinforced digital isolator with sleep mode control (SMb pin), 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating in a WB SOIC-16 package. It supports bidirectional signal isolation in automotive battery management systems and industrial motor drives where low-power operation and fail-safe default-low output are required.
For engineers reviewing the SI86SM41BE-AS2R datasheet, SI86SM41BE-AS2R pinout, SI86SM41BE-AS2R application, or SI86SM41BE-AS2R equivalent, key selection criteria include its AEC-Q100 qualification, 2.25–5.5 V dual-supply operation, Schmitt-trigger + CMOS input thresholds, tri-state outputs with enable, and sleep-mode current of 750 µA per side - all critical for high-noise, safety-critical isolated interfaces.
Technical Context
The SI86SM41BE-AS2R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity up to 100 kV/µs. Its architecture includes four independent channels with two forward (A→B) and two reverse (B→A) paths, controlled by a dedicated active-low SMb pin that places the entire device-including isolated-side circuitry-into ultra-low-power sleep mode.
It features selectable fail-safe output (default-low per ordering code 'BE'), independent UVLO monitoring on both sides (VDDUV+ = 2.18 V typ), and integrated 100 kΩ weak pulldown during unpowered states. The device operates across –40 °C to +125 °C and meets IEC 60747-17 reinforced insulation requirements for automotive and industrial applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed SPI, CAN FD, and real-time control loop signaling without timing bottlenecks. |
| Propagation delay | 10 ns typical - enables sub-100 ns round-trip latency in closed-loop isolated feedback paths. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements for 1000 VAC working voltage systems per UL 1577. |
| Supply voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level shifters. |
| Sleep current | 750 µA per side - reduces standby power in battery-powered BMS and portable medical devices. |
| Fail-safe mode | Default-low output - ensures safe shutdown state in motor control and inverter gate drivers during power loss. |
| EMI immunity | 100 kV/µs transient immunity - maintains signal integrity in high-dv/dt environments like traction inverters. |
Pinout & Package
SI86SM41BE-AS2R uses a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance ≥8.3 mm, supporting 6000 VRMS isolation. Pin layout follows Figure 3 (Si86SM4x) in the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides bias for primary-side transmitters and SMb input logic; requires 0.1 µF + 10 µF local bypass. |
| A1–A4 | Side A digital I/O | Four bidirectional channel inputs/outputs on non-isolated side; Schmitt-trigger + CMOS thresholds ensure noise margin >300 mV. |
| SMb | Sleep mode control | Active-low pin that globally disables transmitters and receivers while retaining one channel to monitor SMb state for wake-up. |
| Isolation Barrier | Die-level separation | Semiconductor-based RF isolation barrier with reinforced insulation certified to IEC 60747-17 and UL 1577. |
| B1–B4 | Side B digital I/O | Four isolated-side I/Os with tri-state capability via EN1/EN2 (not present on SM41; enabled internally). |
| VDD2, GND2 | Side B power supply | Independent secondary-side supply; UVLO monitoring ensures safe output behavior during brownout conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Sleep mode control (SMb) | Reduces total device current to 750 µA/side while retaining wake-up capability - eliminates need for external power gating in always-on systems. |
| Reinforced insulation | 6000 VRMS withstand (UL 1577), IEC 60747-17 certified - enables use in functional safety architectures up to ASIL-D without additional system-level redundancy. |
| No start-up initialization | RF modulation architecture delivers deterministic output behavior within 0.3 ms of VDD stabilization - removes boot-time uncertainty in real-time control loops. |
| Fail-safe default-low | Guaranteed low output on Side B when VDD1 is unpowered - prevents unintended activation of gate drivers or solenoids during power sequencing faults. |
| High CMTI | 100 kV/µs common-mode transient immunity - sustains signal integrity in 1200 V SiC inverter half-bridges with <10 ns switching edges. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
Use Scenario: Isolating PWM gate drive signals and current-sense feedback between MCU and 3-phase inverter stage in servo drives. IC Role / Device Role / Timing Role: Bidirectional 4-channel isolator providing separated control (A→B) and feedback (B→A) paths with <10 ns propagation delay matching IGBT/SiC switching timing budgets. Use Value: Enables precise dead-time control and fast fault response (<1 µs detection-to-shutdown) due to deterministic timing and no initialization delay. | Use Scenario: Isolating cell voltage monitoring and balancing command signals between battery pack controller and slave monitoring ICs in EV traction batteries. IC Role / Device Role / Timing Role: Reinforced isolator with AEC-Q100 qualification and –40 °C to +125 °C operation, delivering fail-safe default-low outputs during partial power loss. Use Value: Prevents erroneous cell balancing activation during BMS brownout events, improving functional safety compliance for ISO 26262 ASIL-C systems. |
| Isolated Switch-Mode Power Supply | Medical Isolated ADC Interface |
Use Scenario: Providing isolated feedback for secondary-side regulation in 1 kW LLC resonant converters used in industrial power supplies. IC Role / Device Role / Timing Role: High-speed digital isolator replacing optocouplers to transmit error amplifier output and synchronous rectifier timing signals across isolation barrier. Use Value: Achieves 150 Mbps data rate and 3.5 ns pulse width distortion - supports tight regulation bandwidth (>500 kHz) and eliminates optocoupler aging drift. | Use Scenario: Isolating serial interface between isolated ADC (e.g., AD7403) and host processor in patient-connected ECG/defibrillator front-ends. IC Role / Device Role / Timing Role: Reinforced 6000 VRMS isolator meeting IEC 60601-1 creepage requirements and providing galvanic separation for patient safety circuits. Use Value: Delivers 100 kV/µs CMTI immunity to reject switching noise from nearby DC-DC converters, ensuring clean analog sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4401BRIZ | 4-channel, 100 Mbps, 25 ns propagation delay, 5000 VRMS, no sleep mode, SOIC-16 NB package | Lacks AEC-Q100 qualification and sleep mode; lower isolation rating limits use in 1000 VAC systems | Select when cost sensitivity outweighs automotive qualification and ultra-low-power needs. |
| ISO6741FDWR | 4-channel, 50 Mbps, 22 ns propagation delay, 5000 VRMS, no sleep mode, SOIC-16 WB package | Lower data rate and timing performance; lacks fail-safe default-low option and reinforced certification for medical use | Select for legacy industrial designs where 50 Mbps suffices and regulatory scope excludes ASIL/IEC 60601-1. |
Compared with ADUM4401BRIZ and ISO6741FDWR, SI86SM41BE-AS2R provides higher data rate (150 Mbps vs ≤100 Mbps), tighter timing (10 ns vs ≥22 ns), AEC-Q100 qualification, and integrated sleep mode - making it uniquely suitable for next-generation automotive BMS and high-bandwidth industrial servo drives requiring functional safety and low standby power.
Availability
SI86SM41BE-AS2R is available at Aetrix Electronics and suitable for automotive battery management systems, industrial motor control drives, isolated switch-mode power supplies, and medical isolated ADC interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SI86SM41BE-AS2R 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 was designed specifically for safety-critical isolation in automotive electrification and industrial automation, emphasizing AEC-Q100 qualification, reinforced insulation, and ultra-low-power sleep modes without compromising speed or noise immunity.
FAQ
What is the isolation rating and safety certification status of SI86SM41BE-AS2R?
SI86SM41BE-AS2R is rated for 6000 VRMS isolation per UL 1577 (1 minute) and carries reinforced insulation certification per IEC 60747-17. It also meets CSA 62368-1 and 60601-1, and CQC GB4943.1 requirements. These certifications are confirmed in the official Skyworks datasheet revision 206553B and apply directly to the SI86SM41BE-AS2R part number in its WB SOIC-16 package.
Does SI86SM41BE-AS2R support fail-safe output configuration, and how is it implemented?
Yes, SI86SM41BE-AS2R implements fail-safe operation with a default-low output state during input-side power loss, as indicated by the 'BE' suffix in its ordering code. This behavior is hardware-defined and does not require external configuration. When VDD1 falls below UVLO– (1.98 V min), outputs on Side B are actively driven low if VDD2 remains powered - a critical feature for safe shutdown in motor control and power inverter applications.
How does the SMb pin function in SI86SM41BE-AS2R, and what is its wake-up behavior?
The SMb pin in SI86SM41BE-AS2R is an active-low sleep mode control that globally disables transmitter and receiver circuits on both sides while maintaining one always-active channel to monitor SMb state. When SMb is pulled low, total current drops to 750 µA per side. Wake-up occurs within 1 µs after SMb is released (high-impedance) or driven high, restoring full 150 Mbps operation without reinitialization - a key advantage over microcontroller-controlled power gating.
What are the supply voltage and temperature operating ranges for SI86SM41BE-AS2R?
SI86SM41BE-AS2R operates with independent 2.25 V to 5.5 V supplies on both sides (VDD1 and VDD2), and is fully specified from –40 °C to +125 °C ambient temperature. Its AEC-Q100 Grade 1 qualification confirms operation across this full range under automotive stress conditions, including thermal cycling and vibration testing - validated for use in under-hood and battery-pack environments.
Can SI86SM41BE-AS2R be used in SPI isolation applications, and what channel directionality does it support?
No - SI86SM41BE-AS2R is a general-purpose 4-channel digital isolator with fixed bidirectional topology (two A→B and two B→A channels), not a dedicated SPI isolator like the Si86SSxx series. It lacks dedicated MCSb/MCLK/MO/MI pins and SPI-specific timing optimizations. For SPI isolation, Skyworks recommends SI86SS41 or SI86SS51; SI86SM41BE-AS2R is intended for generic digital signal isolation such as PWM, GPIO, UART, or encoder feedback.
SI86SM41BE-AS2R 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:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 6000Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 42ns, 42ns
- Pulse Width Distortion (Max):
- 2ns
- 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
SI86SM41BE-AS2R FAQ
1.How can I place an order for SI86SM41BE-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SM41BE-AS2R 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 SI86SM41BE-AS2R reliable?
The price and inventory of SI86SM41BE-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SM41BE-AS2R is usually 5 days.
3.What payment methods are accepted for SI86SM41BE-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SM41BE-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SM41BE-AS2R?
SI86SM41BE-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SM41BE-AS2R 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 SI86SM41BE-AS2R?
For technical support, including SI86SM41BE-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SM41BE-AS2R requirements.
6.How does Aetrix verify that SI86SM41BE-AS2R is sourced from the original manufacturer or authorized distributors?
All SI86SM41BE-AS2R 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 SI86SM41BE-AS2R meets industry standards.
7.What is the process for return or replacement of SI86SM41BE-AS2R?
All SI86SM41BE-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SM41BE-AS2R, 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 SI86SM41BE-AS2R part is unused and in its original packaging.
Return procedure for SI86SM41BE-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SM41BE-AS2R Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
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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
Texas Instruments
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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