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Skyworks Solutions Inc. SI86SM40BE-AS2R
- Part No.:
- SI86SM40BE-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86SM40BE-AS2R.pdf
- Description:
- 6.0 KVRMS SLEEP MODE ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:3,776
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Product details
Overview
SI86SM40BE-AS2R from Skyworks Solutions is a 4-channel reinforced digital isolator with sleep mode control (SMb pin), designed for bidirectional signal isolation across high-voltage barriers in industrial and automotive systems. It supports DC to 150 Mbps data rates, delivers 10 ns typical propagation delay, provides 6000 VRMS isolation rating, and operates across –40 to 125 °C with dual 2.25–5.5 V supplies. It is used in isolated motor control gate drivers and battery management system communication interfaces.
For engineers reviewing the SI86SM40BE-AS2R datasheet, SI86SM40BE-AS2R pinout, SI86SM40BE-AS2R application, or SI86SM40BE-AS2R equivalent, key selection criteria include its SMb-controlled sleep mode (750 µA per side), fail-safe default-low output option, reinforced IEC 60747-17 certification, and WB SOIC-16 package with 8.3 mm creepage/clearance.
Technical Context
The SI86SM40BE-AS2R implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity. Its architecture includes four independent isolation channels with Schmitt-trigger CMOS inputs and tri-state outputs controlled by EN1/EN2 pins.
Sleep mode is activated via the active-low SMb pin, which disables all transmitters except one monitoring channel-enabling rapid wake-up while maintaining 750 µA quiescent current per side. The device features undervoltage lockout (UVLO) thresholds of 2.10–2.25 V (rising) and 1.98–2.12 V (falling) on both sides, plus reset detection at ~1.7 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and digital power control loops. |
| Propagation delay | 10 ns typical - enables tight timing budgets in real-time motor control and ADC sampling synchronization. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements for industrial inverters and EV traction systems. |
| Supply voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level shifters. |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive and industrial ambient environments. |
| Sleep current | 750 µA per side - reduces standby power in battery-backed BMS and portable medical equipment. |
| CMTI | 100 kV/µs minimum - ensures reliable operation in high-dV/dt switching environments like SiC/GaN inverters. |
Pinout & Package
The SI86SM40BE-AS2R is housed in a wide-body SOIC-16 (WB SOIC-16) package with 8.3 mm creepage and clearance, supporting 6000 VRMS isolation. Pin 1 is marked with a dot; the isolation barrier separates Side A (pins 1–8) and Side B (pins 9–16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A supply | 2.25–5.5 V power for input-side logic and transmitter circuits. |
| A1–A4 | Side A digital I/O | Four unidirectional input channels from controller domain (e.g., MCU GPIOs). |
| SMb | Sleep mode enable | Active-low control: drives low to enter 750 µA sleep mode; open/high enables normal operation. |
| GND1 | Side A ground | Reference return path for VDD1 and A-side signals; must be separated from GND2 by isolation barrier. |
| B1–B4 | Side B digital I/O | Four unidirectional output channels to isolated domain (e.g., gate driver inputs). |
| VDD2 | Side B supply | 2.25–5.5 V power for output-side receiver and driver circuits. |
| GND2 | Side B ground | Reference return path for VDD2 and B-side signals; galvanically isolated from GND1. |
| NC | No connect | Pin 9 is not bonded; must remain unconnected on PCB. |
Key Features
| Feature | Design Value |
|---|---|
| Sleep mode control (SMb) | Reduces total quiescent current to 750 µA per side while retaining fast wake-up via single-pin assertion. |
| Fail-safe default-low output | Ensures predictable B-side logic state during A-side power loss-critical for safe shutdown in motor drives. |
| Reinforced IEC 60747-17 rating | Validates suitability for functional safety applications up to SIL-3 / ASIL-D when implemented per system-level requirements. |
| Tri-state outputs with EN1/EN2 | Allows centralized output disable for bus contention avoidance or power sequencing in multi-isolator systems. |
| RF modulation architecture | Eliminates startup delay and avoids LED aging issues inherent in optocouplers-ensuring stable timing over lifetime. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating PWM signals between MCU and three-phase inverter gate drivers in variable-frequency drives. IC Role / Device Role / Timing Role: Bidirectional digital isolator providing timing-critical gate drive enable/disable and fault feedback across 6000 VRMS barrier. Use Value: 10 ns propagation delay ensures <100 ns total channel skew, enabling precise dead-time control and preventing shoot-through in IGBT/SiC modules. |
Use Scenario: Isolating cell voltage measurement data and balancing commands between battery monitor IC and MCU in high-voltage EV packs. IC Role / Device Role / Timing Role: Four-channel isolator separating analog front-end SPI interface and digital control lines across reinforced barrier. Use Value: AEC-Q100 qualification and –40 to 125 °C operation guarantee reliability in under-hood thermal cycling and vibration environments. |
| Isolated Switch-Mode Power Supply | Medical Isolated Data Acquisition |
|
Use Scenario: Providing feedback isolation for secondary-side voltage/current sensing in 1–3 kW telecom rectifiers. IC Role / Device Role / Timing Role: Digital isolator transmitting error amplifier output and synchronous rectifier control signals across primary-secondary boundary. Use Value: 150 Mbps capability supports high-resolution digital PWM encoding, improving transient response vs. traditional optocoupler-based feedback. |
Use Scenario: Isolating ECG/EEG sensor front-end ADC outputs and configuration commands in Class II medical devices. IC Role / Device Role / Timing Role: Reinforced isolator meeting 60601-1 creepage/clearance and leakage current limits for patient-connected equipment. Use Value: UL 1577 and VDE 60747-17 certifications satisfy regulatory testing requirements without additional external barrier components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRIZ | 4-channel, 150 Mbps, 2.5–5.5 V, no sleep mode, 3750 VRMS isolation, SOIC-16 NB | Lacks SMb sleep control and reinforced 6000 VRMS rating; suitable only for non-safety-critical 3.75 kVRMS applications. | Select when cost sensitivity outweighs need for automotive-grade sleep mode and highest isolation rating. |
| ISO7741FDWR | 4-channel, 100 Mbps, 2.25–5.5 V, no sleep mode, 5000 VRMS, SOIC-16 WB | Lower data rate and isolation rating; lacks AEC-Q100 qualification and failsafe default-low option. | Choose for industrial automation where 100 Mbps suffices and full automotive qualification is unnecessary. |
Compared with ADUM140D0BRIZ and ISO7741FDWR, SI86SM40BE-AS2R uniquely combines 6000 VRMS reinforced isolation, AEC-Q100 qualification, SMb sleep mode, and default-low fail-safe behavior-making it optimal for high-reliability automotive and industrial power systems requiring lowest standby power and highest safety margin.
Availability
SI86SM40BE-AS2R is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, and isolated switch-mode power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SI86SM40BE-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-performance wireless and wired infrastructure.
The Si86Sxx family was engineered specifically for high-noise, high-reliability isolation in industrial automation, EV powertrain, and medical electronics-emphasizing RF-based robustness, low power, and safety certification readiness.
FAQ
What is the isolation rating and safety certification status of the SI86SM40BE-AS2R?
The SI86SM40BE-AS2R provides 6000 VRMS isolation for 1 minute per UL 1577 and carries reinforced insulation certification to IEC 60747-17. It also meets CSA 62368-1 and 60601-1, and CQC GB4943.1 standards. These approvals are documented in Skyworks' official safety reports and apply directly to the SI86SM40BE-AS2R in its WB SOIC-16 package.
Does the SI86SM40BE-AS2R support fail-safe output behavior during power loss?
Yes-the SI86SM40BE-AS2R is ordered with default-low fail-safe behavior (denoted by "BE" in the part number). When VDD1 is unpowered but VDD2 remains active, outputs B1–B4 are held low, ensuring safe deactivation of downstream circuitry such as gate drivers or relay controls.
How does the SMb pin function in the SI86SM40BE-AS2R?
The SMb pin is an active-low input that places the SI86SM40BE-AS2R into ultra-low-power sleep mode (750 µA per side) when driven low. In sleep mode, all transmitters are disabled except one monitoring channel that detects SMb going high to enable immediate wake-up-no reinitialization is required.
What package type and creepage distance does the SI86SM40BE-AS2R use?
The SI86SM40BE-AS2R uses a wide-body SOIC-16 (WB SOIC-16) package with 8.3 mm minimum creepage and clearance, enabling 6000 VRMS isolation performance. This package meets IPC-4761 Type VI requirements and is validated for reinforced insulation in high-voltage industrial and automotive applications.
Is the SI86SM40BE-AS2R qualified for automotive applications?
Yes-the SI86SM40BE-AS2R is AEC-Q100 qualified for Grade 1 (–40 to 125 °C), includes AIAG-compliant PPAP documentation, and supports IMDS/CAMDS reporting. It is designed using automotive-specific manufacturing flows and is deployed in onboard chargers, battery management systems, and traction inverters.
SI86SM40BE-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:
- 4/0
- 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
SI86SM40BE-AS2R FAQ
1.How can I place an order for SI86SM40BE-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SM40BE-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 SI86SM40BE-AS2R reliable?
The price and inventory of SI86SM40BE-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SM40BE-AS2R is usually 5 days.
3.What payment methods are accepted for SI86SM40BE-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SM40BE-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SM40BE-AS2R?
SI86SM40BE-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SM40BE-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 SI86SM40BE-AS2R?
For technical support, including SI86SM40BE-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SM40BE-AS2R requirements.
6.How does Aetrix verify that SI86SM40BE-AS2R is sourced from the original manufacturer or authorized distributors?
All SI86SM40BE-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 SI86SM40BE-AS2R meets industry standards.
7.What is the process for return or replacement of SI86SM40BE-AS2R?
All SI86SM40BE-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SM40BE-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 SI86SM40BE-AS2R part is unused and in its original packaging.
Return procedure for SI86SM40BE-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SM40BE-AS2R 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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