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Skyworks Solutions Inc. SI86SM40EC-IS1
- Part No.:
- SI86SM40EC-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SM40EC-IS1.pdf
- Description:
- 6.0 KVRMS LOW POWER ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:2,479
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Product details
Overview
SI86SM40EC-IS1 from Skyworks Solutions is a four-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 provides bidirectional signal isolation across an RF-based semiconductor barrier for industrial motor control, battery management systems, and isolated ADC interfaces.
For engineers reviewing the SI86SM40EC-IS1 datasheet, SI86SM40EC-IS1 pinout, SI86SM40EC-IS1 application, or SI86SM40EC-IS1 equivalent, this page delivers verified technical context, exact pin functions, fail-safe output behavior, sleep-mode power savings, and automotive-grade safety certifications including AEC-Q100 and IEC 60747-17.
Technical Context
The SI86SM40EC-IS1 implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier, eliminating startup initialization and enabling deterministic timing. Its architecture supports independent undervoltage lockout (UVLO) and reset monitoring on both sides (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO+ at 2.18 V.
Sleep mode is activated via the SMb pin (active-low), reducing quiescent current to 750 µA per side while maintaining one always-on channel to monitor SMb state. The device features Schmitt-trigger + CMOS threshold inputs, tri-state outputs with enable, and selectable fail-safe default output (low in this ordering option).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI bus extensions. |
| Isolation rating | 6000 VRMS for 1 minute - meets reinforced insulation requirements per UL 1577 and IEC 60747-17. |
| Propagation delay | 10 ns typical - enables precise timing-critical applications such as gate driver feedback and real-time control loops. |
| Supply voltage | 2.25 to 5.5 V - allows direct interface with 3.3 V and 5 V logic domains without level-shifting. |
| Pulse width distortion | 3.5 ns typical - ensures minimal duty-cycle degradation in clock or PWM signal isolation. |
| Transient immunity | ≥100 kV/µs - provides robust operation in high-noise environments like motor drives and inverters. |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive and industrial ambient conditions. |
Pinout & Package
SI86SM40EC-IS1 is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS isolation. Pin functions are validated per Figure 3 and Table 1 of Skyworks datasheet 206553B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A supply | Power and ground for input-side logic; requires 0.1 µF + 10 µF bypass capacitors. |
| A1–A4 | Side A digital I/O | Four unidirectional input channels from controller side; CMOS/Schmitt-trigger compatible. |
| SMb | Sleep mode control | Active-low pin that disables all transmitters except one monitoring channel; enables 750 µA/side low-power state. |
| Isolation Barrier | RF coupling interface | Semiconductor die barrier modulating RF carrier for noise-immune signal transfer; no optical components. |
| B1–B4 | Side B digital I/O | Four isolated output channels to peripheral side; tri-state capable via EN1/EN2 (not present on SI86SM40EC-IS1). |
| VDD2, GND2 | Side B supply | Independent power domain for isolated side; supports separate 3.3 V/5 V rail configuration. |
Key Features
| Feature | Design Value |
|---|---|
| Sleep mode (SMb) | Reduces total quiescent current to 750 µA per side while retaining wake-up capability via single active RF channel. |
| Fail-safe default output | Configured as low-output during VDD1 unpowered condition - prevents undefined states in safety-critical BMS or inverter control. |
| Reinforced insulation | UL 1577 (6000 VRMS), VDE 60747-17, CSA 62368-1/60601-1 - certified for medical and automotive end-equipment compliance. |
| No start-up initialization | Zero-latency operation after VDD stabilization - eliminates boot-time delays in real-time motor control and power conversion. |
| High CMTI immunity | ≥100 kV/µs common-mode transient immunity - maintains signal integrity during fast-switching events in SiC/GaN inverter designs. |
Applications
| Industrial Motor Control | Battery Management Systems |
|---|---|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stacks for HVAC compressors and EV traction motors. IC Role / Device Role / Timing Role: Bidirectional signal isolator providing timing-critical PWM edge transmission and fault reporting across isolation barrier. Use Value: 10 ns propagation delay and 3.5 ns pulse width distortion preserve PWM fidelity; 6000 VRMS withstand enables compact PCB layout in high-voltage DC-link environments. |
Use Scenario: Isolating cell voltage monitoring and pack-level communication between MCU and analog front-end in 400–800 V BEV battery packs. IC Role / Device Role / Timing Role: Four-channel digital isolator transmitting ADC conversion results and balancing commands across reinforced barrier. Use Value: AEC-Q100 qualification and –40 to 125 °C operation ensure reliability in thermally aggressive battery enclosures; sleep mode reduces standby power in parked-vehicle state. |
| Isolated Switch-Mode Supplies | Medical Isolated Data Acquisition |
Use Scenario: Providing feedback path for secondary-side voltage regulation and primary-side synchronous rectifier control in isolated DC-DC converters. IC Role / Device Role / Timing Role: High-speed digital isolator carrying error amplifier output and gate timing signals across transformerless barrier. Use Value: 150 Mbps data rate supports fast-loop compensation; 2.25–5.5 V supply range simplifies biasing from auxiliary windings or LDOs. |
Use Scenario: Isolating ECG/EEG analog-to-digital conversion data streams and control signals between patient-connected front-end and host processor in diagnostic equipment. IC Role / Device Role / Timing Role: Reinforced digital isolator meeting IEC 60601-1 creepage/clearance and leakage current requirements. Use Value: VDE-certified reinforced insulation and 6000 VRMS rating satisfy patient-isolation safety standards; low EMI RF modulation avoids interference with sensitive analog measurements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2400ARWZ | 4-channel, 25 Mbps, 2.5 kVRMS, no sleep mode, SOIC-16 (narrow body) | Limited to lower-speed industrial I/O; lacks AEC-Q100 and reinforced 6 kVRMS rating | Select when cost sensitivity outweighs speed, safety, or automotive qualification needs. |
| ISO7741FDWR | 4-channel, 100 Mbps, 5 kVRMS, no SMb pin, SOIC-16 (wide body) | Missing sleep mode and fail-safe low-default; rated for 5 kVRMS only (IEC 60747-17 not claimed) | Choose for non-automotive industrial use where 5 kVRMS suffices and sleep mode is unnecessary. |
Compared with ADUM2400ARWZ and ISO7741FDWR, SI86SM40EC-IS1 delivers higher data rate (150 Mbps), full reinforced 6000 VRMS certification, AEC-Q100 qualification, and integrated sleep mode - making it uniquely suited for next-generation automotive BMS and high-performance industrial inverters requiring both safety and power efficiency.
Availability
SI86SM40EC-IS1 is available at Aetrix Electronics and suitable for industrial motor control, battery management systems, and isolated switch-mode supplies requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI86SM40EC-IS1 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 Si86Sxx family was designed specifically for high-reliability, high-speed digital isolation in automotive, industrial, and medical systems - emphasizing reinforced safety, low power, and deterministic timing performance.
FAQ
What is the isolation voltage rating of SI86SM40EC-IS1?
SI86SM40EC-IS1 is rated for 6000 VRMS isolation for 1 minute per UL 1577 and carries reinforced insulation certification per IEC 60747-17, CSA 62368-1, and VDE 60747-17. This rating applies to its WB SOIC-16 package and enables use in high-voltage industrial and automotive applications where creepage and clearance must meet stringent safety standards.
Does SI86SM40EC-IS1 support fail-safe output behavior?
Yes, SI86SM40EC-IS1 is configured as a default-low fail-safe option. When VDD1 is unpowered but VDD2 remains active, outputs B1–B4 remain in a defined logic-low state - preventing unintended activation of downstream drivers or controllers in safety-critical systems like battery disconnect units or inverter gate drivers.
How does the SMb pin function in SI86SM40EC-IS1?
The SMb pin in SI86SM40EC-IS1 is an active-low sleep mode control. When pulled low, it disables all transmitter circuits except one dedicated RF channel that continuously monitors SMb state. This reduces total quiescent current to 750 µA per side while allowing immediate wake-up upon SMb release or high transition - ideal for low-duty-cycle BMS monitoring.
What are the supply voltage requirements for SI86SM40EC-IS1?
SI86SM40EC-IS1 operates across a wide supply range of 2.25 V to 5.5 V on both VDD1 and VDD2 sides, supporting interoperability with 3.3 V microcontrollers and 5 V peripherals. Each side requires local 0.1 µF ceramic + 10 µF bulk bypass capacitors placed adjacent to the pins to ensure stable high-speed operation and noise immunity.
Is SI86SM40EC-IS1 qualified for automotive applications?
Yes, SI86SM40EC-IS1 is AEC-Q100 qualified and built using automotive-specific manufacturing flows. It supports AIAG-compliant PPAP documentation, IMDS/CAMDS reporting, and operates across –40 to 125 °C ambient temperature - making it suitable for onboard chargers, traction inverters, and battery management systems in hybrid and battery electric vehicles.
SI86SM40EC-IS1 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:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 6000Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 14ns, 14ns
- Pulse Width Distortion (Max):
- 2ns
- 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
SI86SM40EC-IS1 FAQ
1.How can I place an order for SI86SM40EC-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SM40EC-IS1 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 SI86SM40EC-IS1 reliable?
The price and inventory of SI86SM40EC-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SM40EC-IS1 is usually 5 days.
3.What payment methods are accepted for SI86SM40EC-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SM40EC-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SM40EC-IS1?
SI86SM40EC-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SM40EC-IS1 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 SI86SM40EC-IS1?
For technical support, including SI86SM40EC-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SM40EC-IS1 requirements.
6.How does Aetrix verify that SI86SM40EC-IS1 is sourced from the original manufacturer or authorized distributors?
All SI86SM40EC-IS1 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 SI86SM40EC-IS1 meets industry standards.
7.What is the process for return or replacement of SI86SM40EC-IS1?
All SI86SM40EC-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI86SM40EC-IS1, 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 SI86SM40EC-IS1 part is unused and in its original packaging.
Return procedure for SI86SM40EC-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SM40EC-IS1 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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