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Skyworks Solutions Inc. SI86SM41EC-AS1R
- Part No.:
- SI86SM41EC-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SM41EC-AS1R.pdf
- Description:
- 6.0 KVRMS SLEEP MODE ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:3,285
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Product details
Overview
SI86SM41EC-AS1R from Skyworks Solutions is a 4-channel, reinforced-isolation digital isolator with sleep mode control (SMb pin), supporting up to 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating in a WB SOIC-16 package. It operates across 2.25–5.5 V supply range and is AEC-Q100 qualified for automotive battery management systems.
For engineers reviewing the SI86SM41EC-AS1R datasheet, SI86SM41EC-AS1R pinout, SI86SM41EC-AS1R application, or SI86SM41EC-AS1R equivalent, key selection criteria include its active-low sleep mode control, fail-safe default output configuration, reinforced IEC 60747-17 certification, and compatibility with isolated SPI peripheral interfaces in high-noise traction inverter gate drive circuits.
Technical Context
The SI86SM41EC-AS1R implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling deterministic timing. Its architecture includes four unidirectional channels (A1–A4 → B1–B4), dedicated SMb input for global sleep control, and Schmitt-trigger CMOS inputs with 0.15×VDD hysteresis.
It supports independent undervoltage lockout (UVLO) on both sides (VDDUV+ = 2.10–2.25 V), integrated 100 kΩ weak pulldown during unpowered states, and failsafe output behavior configurable at ordering-this specific variant defaults low when VDD2 is powered but VDD1 is unpowered.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI clock domains. |
| Propagation Delay | 10 ns typical - enables tight timing budgets in motor control PWM feedback loops. |
| Isolation Rating | 6000 VRMS - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for 1-minute withstand. |
| Supply Voltage | 2.25–5.5 V - allows direct interfacing with 3.3 V and 5 V logic without level shifters. |
| Operating Temp | –40 to +125 °C - qualified for under-hood automotive environments and industrial inverters. |
| Transient Immunity | ≥100 kV/µs - ensures robust operation in high-dV/dt gate driver applications. |
| Sleep Current | 750 µA per side - reduces system standby power in battery management monitoring circuits. |
Pinout & Package
SI86SM41EC-AS1R is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS reinforced isolation. Pin 1 is marked with a dot; pin 16 is VDD2; GND1 and GND2 are on opposite sides of the isolation barrier.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power domain | Supplies and grounds the input-side logic; requires 0.1 µF + 10 µF bypass capacitors. |
| A1–A4 | Input signals (Side A) | Digital inputs with Schmitt-trigger + CMOS thresholds; tolerate 0.15×VDD hysteresis for noise immunity. |
| SMb | Sleep mode control | Active-low input; drives device into 750 µA/side sleep state while retaining wake-up capability via this pin. |
| VDD2, GND2 | Side B power domain | Isolated output-side supply; independent UVLO and reset circuitry ensure safe startup sequencing. |
| B1–B4 | Output signals (Side B) | CMOS outputs with ~50 Ω impedance; support controlled-impedance PCB routing for >50 Mbps signals. |
Key Features
| Feature | Design Value |
|---|---|
| No-startup initialization | RF-modulated channel architecture eliminates boot-time delays or configuration sequences. |
| Reinforced safety certification | UL 1577, VDE 60747-17, CSA 62368-1, CQC GB4943.1 - enables single-component compliance for medical and EV systems. |
| Selectable fail-safe output | Default-low behavior during VDD1 loss ensures safe shutdown of downstream gate drivers or ADC references. |
| High CMTI immunity | ≥100 kV/µs common-mode transient immunity - prevents data corruption in high-dV/dt inverter half-bridges. |
| Sleep mode with wake-on-SMb | SMb pin controls full device sleep while retaining one always-active channel to detect wake events without external circuitry. |
Applications
| Isolated Battery Monitoring | Automotive Traction Inverter Gate Drive |
|---|---|
Use Scenario: Real-time cell voltage and temperature sampling in 400–800 V EV battery packs using isolated ADCs. IC Role / Device Role / Timing Role: Isolates SPI communication between MCU (Side A) and isolated ADC (Side B), maintaining timing integrity at 10 ns propagation delay. Use Value: Enables accurate, noise-immune measurement in high-CMTI environments without compromising data rate or introducing startup latency. | Use Scenario: Transmitting PWM enable/disable and fault signals between controller board and IGBT/SiC gate driver stages. IC Role / Device Role / Timing Role: Provides bidirectional signal isolation for gate drive enable, DESAT feedback, and overcurrent reporting with fail-safe low default. Use Value: Guarantees safe gate driver disable during controller power loss, preventing shoot-through in high-power inverters. |
| Onboard Charger (OBC) Control | Industrial Motor Drive Feedback Loop |
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: Transfers isolated enable, sync, and error signals across 6000 VRMS barrier with sub-15 ns pulse width distortion. Use Value: Supports fast transient response in digitally controlled OBCs while meeting reinforced insulation requirements for Class II systems. | Use Scenario: Isolating encoder position data and current-sense feedback from motor phase legs to motion controller. IC Role / Device Role / Timing Role: Delivers low-latency, glitch-free position updates across isolation barrier with 36 ns input deglitch filter option (family-wide). Use Value: Prevents false encoder edge detection caused by EMI in high-power motor windings, improving servo stability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI86SM40EC-AS1R | No SMb pin; fixed operation without sleep mode control. | Lacks low-power standby capability; unsuitable for battery-powered monitoring nodes. | Select SI86SM40EC-AS1R only if continuous operation is required and sleep functionality is unnecessary. |
| ADUM3481BRNZ | 4-channel, 25 Mbps max data rate; no AEC-Q100 qualification; 2.5 kVRMS isolation. | Not rated for automotive traction systems; limited to industrial automation where lower speed and isolation suffice. | Choose ADUM3481BRNZ for cost-sensitive, non-automotive applications requiring basic isolation without high-speed or reinforced safety. |
Compared with SI86SM41EC-AS1R, SI86SM40EC-AS1R omits sleep control but shares identical timing and isolation specs, while ADUM3481BRNZ trades speed, safety rating, and automotive qualification for lower unit cost in less demanding environments.
Availability
SI86SM41EC-AS1R is available at Aetrix Electronics and suitable for automotive battery management systems, traction inverter gate drive interfaces, and onboard charger control requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SI86SM41EC-AS1R 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 Si86S6xx/Lxx/Mxx/Qxx/Sxx family was designed specifically for high-reliability, high-speed isolation in automotive electrification and industrial power conversion, emphasizing reinforced safety, low latency, and robust EMI immunity.
FAQ
What is the isolation voltage rating of the SI86SM41EC-AS1R?
The SI86SM41EC-AS1R provides 6000 VRMS reinforced isolation per UL 1577 for 1 minute, certified to IEC 60747-17, CSA 62368-1, and CQC GB4943.1. This rating applies to the WB SOIC-16 package and enables use in high-voltage automotive and industrial systems where reinforced insulation is mandated.
Does the SI86SM41EC-AS1R require startup initialization or configuration?
No, the SI86SM41EC-AS1R uses an RF-modulated isolation architecture that requires no startup initialization or register configuration. It begins transmitting valid data immediately upon VDD stabilization, with deterministic timing behavior governed solely by input transitions and supply conditions.
How does the SMb pin function in the SI86SM41EC-AS1R?
The SMb pin is an active-low input that places the SI86SM41EC-AS1R into a low-power sleep state drawing 750 µA per side. While asleep, one internal channel remains active to monitor SMb; driving SMb high (or leaving it open) wakes the device fully within microseconds, restoring all channel operation without reinitialization.
What is the default output state of the SI86SM41EC-AS1R during power loss on Side A?
The SI86SM41EC-AS1R is configured as a default-low variant: when VDD1 is unpowered but VDD2 remains active, all B1–B4 outputs are driven low. This fail-safe behavior ensures safe shutdown of downstream components such as gate drivers or reference buffers during controller-side power faults.
Can the SI86SM41EC-AS1R be used in SPI isolation applications?
Yes, the SI86SM41EC-AS1R supports isolated SPI communication through its four unidirectional channels. It is commonly deployed to isolate MOSI, MISO, SCLK, and CS signals between MCU and peripheral devices, especially in automotive BMS where high CMTI and AEC-Q100 compliance are mandatory.
SI86SM41EC-AS1R 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:
- 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-AS1R FAQ
1.How can I place an order for SI86SM41EC-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SM41EC-AS1R 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-AS1R reliable?
The price and inventory of SI86SM41EC-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SM41EC-AS1R is usually 5 days.
3.What payment methods are accepted for SI86SM41EC-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SM41EC-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SM41EC-AS1R?
SI86SM41EC-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SM41EC-AS1R 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-AS1R?
For technical support, including SI86SM41EC-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SM41EC-AS1R requirements.
6.How does Aetrix verify that SI86SM41EC-AS1R is sourced from the original manufacturer or authorized distributors?
All SI86SM41EC-AS1R 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-AS1R meets industry standards.
7.What is the process for return or replacement of SI86SM41EC-AS1R?
All SI86SM41EC-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SM41EC-AS1R, 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-AS1R part is unused and in its original packaging.
Return procedure for SI86SM41EC-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SM41EC-AS1R Tags
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