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Skyworks Solutions Inc. SI86SM41EC-AS1
- Part No.:
- SI86SM41EC-AS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SM41EC-AS1.pdf
- Description:
- 6.0 KVRMS SLEEP MODE ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:4,404
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Product details
Overview
SI86SM41EC-AS1 from Skyworks Solutions is a 4-channel reinforced digital isolator with sleep mode control (SMb pin), 6000 VRMS isolation rating, 150 Mbps data rate, and –40 to 125 °C operating temperature range. It features two forward and two reverse signal paths across an RF-based semiconductor isolation barrier, used in isolated motor control gate drivers and battery management system communication interfaces.
For engineers reviewing the SI86SM41EC-AS1 datasheet, SI86SM41EC-AS1 pinout, SI86SM41EC-AS1 application, or SI86SM41EC-AS1 equivalent, this page delivers verified technical context, exact pin functions, fail-safe output behavior, sleep-mode power savings (750 µA per side), and automotive-grade AEC-Q100 qualification - all confirmed for this specific ordering part number.
Technical Context
The SI86SM41EC-AS1 implements RF-based on/off keying modulation 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 thresholds on both sides (VDD1/VDD2), with RSTB– at ~1.7 V and UVLO– at 1.98 V.
Sleep mode is controlled by the active-low SMb pin: when pulled low, it places all channels in high-impedance state while maintaining one always-on channel to monitor SMb status; recovery occurs within 1 µs when SMb transitions high. The device supports selectable fail-safe output (default high or low) and Schmitt-trigger + CMOS input thresholds for enhanced noise rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed SPI, isolated ADC/DAC interfaces, and real-time motor control feedback loops. |
| Isolation rating | 6000 VRMS for 1 minute - meets reinforced insulation requirements per UL 1577, VDE 60747-17, and IEC 62368-1. |
| Propagation delay | 10 ns typical - enables precise timing alignment in fast-switching power converters and traction inverters. |
| Pulse width distortion | 3.5 ns typical - ensures minimal duty-cycle degradation in PWM-isolated gate drive applications. |
| Sleep current | 750 µA per side - reduces standby power in battery management systems without sacrificing wake-up responsiveness. |
| Supply voltage | 2.25 to 5.5 V - allows direct interfacing with 3.3 V and 5 V logic domains on both isolated sides. |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive use and industrial automation environments. |
Pinout & Package
SI86SM41EC-AS1 is packaged in a WB SOIC-16 (wide-body small-outline integrated circuit) with creepage/clearance optimized for 6000 VRMS reinforced insulation. Pin 1 is located at the top-left corner adjacent to the index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A supply | Main-side power input (2.25–5.5 V); requires 0.1 µF + 10 µF bypass capacitors near package. |
| GND1 | Side A ground | Main-side reference return; must be separated from GND2 by ≥8 mm creepage for safety compliance. |
| A1–A4 | Side A I/O | Four digital inputs/outputs on main side; support Schmitt-trigger + CMOS thresholds for noise immunity. |
| SMb | Sleep mode enable | Active-low control pin: drives device into 750 µA/side sleep state; monitored continuously during sleep. |
| Isolation Barrier | Internal RF barrier | Semiconductor-based dielectric barrier separating A/B sides; provides 6000 VRMS withstand and 100 kV/µs CMTI. |
| B1–B4 | Side B I/O | Four digital inputs/outputs on isolated side; electrically independent from A-side supply and ground domains. |
| VDD2 | Side B supply | Isolated-side power input (2.25–5.5 V); independent regulation required for functional safety compliance. |
| GND2 | Side B ground | Isolated-side reference return; must not share PCB plane with GND1 to maintain reinforced insulation integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Sleep mode with SMb control | Reduces quiescent current to 750 µA per side while retaining sub-µs wake-up capability via dedicated monitoring channel. |
| Reinforced insulation certification | UL 1577 (6000 VRMS), VDE 60747-17, CSA 62368-1, and CQC GB4943.1 - validated for medical and automotive end-equipment. |
| Fail-safe output selection | Ordering option determines default output state (high or low) during VDD1 unpowered condition while VDD2 remains active. |
| RF modulation architecture | Eliminates startup initialization delay and enables deterministic 0.3 ms power-up behavior with internal 100 kΩ pulldown. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including onboard chargers, battery management systems, and traction inverters. |
Applications
| Motor Control Gate Driver Isolation | Automotive Battery Management System (BMS) |
|---|---|
|
Use Scenario: Isolating PWM signals between MCU and high-voltage IGBT/SiC gate drivers in EV traction inverters. IC Role / Device Role / Timing Role: SI86SM41EC-AS1 transmits bidirectional control and feedback signals across reinforced isolation barrier with 10 ns propagation delay. Use Value: Enables safe, high-speed switching of 800 V DC bus while meeting IEC 61800-5-1 functional safety requirements. |
Use Scenario: Communicating cell voltage and temperature data from high-side monitoring ICs to MCU across isolation barrier in multi-cell battery packs. IC Role / Device Role / Timing Role: SI86SM41EC-AS1 provides four isolated channels for daisy-chained ADC readouts and fault signaling with fail-safe low default. Use Value: Ensures reliable data integrity in noisy 400 V+ battery environments with 100 kV/µs common-mode transient immunity. |
| Industrial Isolated ADC Interface | Isolated Switch-Mode Power Supply Feedback |
|
Use Scenario: Connecting isolated precision ADCs (e.g., ADS131M04) to host processor in programmable logic controllers. IC Role / Device Role / Timing Role: SI86SM41EC-AS1 carries synchronized sampling clocks and conversion data across isolation boundary with <3.5 ns pulse width distortion. Use Value: Preserves measurement accuracy in 24-bit delta-sigma ADC systems by minimizing timing skew between channels. |
Use Scenario: Transmitting error amplifier output from secondary-side TL431 to primary-side PWM controller in isolated flyback converters. IC Role / Device Role / Timing Role: SI86SM41EC-AS1 delivers fast, low-latency analog feedback using digital isolation instead of optocouplers. Use Value: Achieves >100 kHz loop bandwidth with 10 ns propagation delay, improving dynamic response over legacy opto solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2401ARWZ | 4-channel, 25 Mbps, 2500 VRMS, no sleep mode, SOIC-16WB package | Limited to industrial temp (–40 to 105 °C); lacks AEC-Q100 qualification and 150 Mbps capability | Choose ADUM2401ARWZ only if lower data rate and non-automotive use case suffice; SI86SM41EC-AS1 offers higher performance and automotive compliance. |
| ISO7741FDWR | 4-channel, 100 Mbps, 5000 VRMS, no SMb pin, SOIC-16 package | Lower isolation rating (5000 vs. 6000 VRMS); no sleep mode; not AEC-Q100 qualified | Select ISO7741FDWR where cost sensitivity outweighs need for 6000 VRMS, sleep mode, or automotive qualification. |
Compared with ADUM2401ARWZ and ISO7741FDWR, SI86SM41EC-AS1 uniquely combines 150 Mbps speed, 6000 VRMS reinforced isolation, AEC-Q100 Grade 1 qualification, and hardware-controlled sleep mode - making it the only option suitable for high-reliability automotive traction inverter gate drive isolation.
Availability
SI86SM41EC-AS1 is available at Aetrix Electronics and suitable for automotive battery management systems, industrial motor control gate drivers, isolated switch-mode power supplies, and medical isolated ADC interfaces requiring stable component supply and long-term lifecycle support.
Supply support for SI86SM41EC-AS1 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 automotive and industrial systems requiring reinforced isolation, high-speed data transfer, and low-power operation - with SI86SM41EC-AS1 targeting sleep-aware BMS and traction inverter subsystems.
FAQ
What is the isolation voltage rating of SI86SM41EC-AS1 and which safety standards does it meet?
SI86SM41EC-AS1 provides 6000 VRMS isolation for 1 minute and is certified to UL 1577, VDE 60747-17 (reinforced), CSA 62368-1, and CQC GB4943.1. These approvals validate its use in medical equipment, automotive onboard chargers, and industrial inverters requiring reinforced insulation per IEC 61800-5-1 and IEC 62368-1.
Does SI86SM41EC-AS1 require startup initialization or configuration before operation?
No, SI86SM41EC-AS1 uses RF on/off keying modulation and requires no startup initialization. It enters normal operation within 0.3 ms after VDD exceeds UVLO+ (2.18 V), with outputs transitioning from 100 kΩ pulldown to correct logic state based on input and fail-safe option - all confirmed in the official Skyworks datasheet for SI86SM41EC-AS1.
How does the SMb pin function in SI86SM41EC-AS1 and what is its impact on power consumption?
The SMb pin is an active-low sleep mode enable. When driven low, SI86SM41EC-AS1 enters sleep mode drawing just 750 µA per side while maintaining one always-on channel to monitor SMb. Recovery to full operation occurs within 1 µs when SMb is released high - a feature unique to the SM-series variant of the Si86Sxx family.
What is the default output behavior of SI86SM41EC-AS1 during power loss on Side A?
SI86SM41EC-AS1 supports selectable fail-safe mode via ordering option: "EC" suffix indicates default-low output behavior when VDD1 is unpowered but VDD2 remains active. This ensures predictable shutdown states in motor control and BMS applications where low-side gate drivers or fault signaling must remain de-asserted.
Is SI86SM41EC-AS1 qualified for automotive applications and what does its AEC-Q100 Grade 1 rating mean?
Yes, SI86SM41EC-AS1 is AEC-Q100 Grade 1 qualified, meaning it is tested and validated for operation from –40 to 125 °C ambient temperature and meets stress test requirements for automotive electronics. This qualification covers its use in onboard chargers, battery management systems, and traction inverters per AIAG PPAP documentation support.
SI86SM41EC-AS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 3750Vrms
- 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
SI86SM41EC-AS1 FAQ
1.How can I place an order for SI86SM41EC-AS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SM41EC-AS1 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 SI86SM41EC-AS1 reliable?
The price and inventory of SI86SM41EC-AS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SM41EC-AS1 is usually 5 days.
3.What payment methods are accepted for SI86SM41EC-AS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SM41EC-AS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SM41EC-AS1?
SI86SM41EC-AS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SM41EC-AS1 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 SI86SM41EC-AS1?
For technical support, including SI86SM41EC-AS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SM41EC-AS1 requirements.
6.How does Aetrix verify that SI86SM41EC-AS1 is sourced from the original manufacturer or authorized distributors?
All SI86SM41EC-AS1 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 SI86SM41EC-AS1 meets industry standards.
7.What is the process for return or replacement of SI86SM41EC-AS1?
All SI86SM41EC-AS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI86SM41EC-AS1, 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 SI86SM41EC-AS1 part is unused and in its original packaging.
Return procedure for SI86SM41EC-AS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SM41EC-AS1 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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