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Skyworks Solutions Inc. SI86SM40EE-IS2R
- Part No.:
- SI86SM40EE-IS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86SM40EE-IS2R.pdf
- Description:
- 6.0 KVRMS SLEEP MODE ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:3,802
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Product details
Overview
SI86SM40EE-IS2R 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 operation across –40 to 125 °C for automotive battery management systems and isolated power supplies.
For engineers reviewing the SI86SM40EE-IS2R datasheet, SI86SM40EE-IS2R pinout, SI86SM40EE-IS2R application, or SI86SM40EE-IS2R equivalent, this page delivers verified technical context, exact pin functions, fail-safe output behavior, sleep-mode current draw (750 µA per side), and automotive-grade AEC-Q100 qualification - all critical for high-reliability isolated signal transmission in traction inverters and onboard chargers.
Technical Context
The SI86SM40EE-IS2R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling deterministic timing with 10 ns typical propagation delay and 3.5 ns pulse width distortion. It supports independent dual-supply operation (2.25–5.5 V per side) with side-specific UVLO and reset thresholds (RSTB± ~1.7 V).
Sleep mode is controlled via the active-low SMb pin: when asserted low, it places both sides into ultra-low-power state (750 µA per side) while retaining one always-on channel to monitor SMb status and enable wake-up. Outputs enter tri-state during sleep, and default output state (high/low) is fixed per ordering option - SI86SM40EE-IS2R is configured for default-low behavior during unpowered conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI interfaces without protocol translation. |
| Isolation rating | 6000 VRMS (1 min, UL 1577) - enables use in reinforced insulation applications such as battery electric vehicle (BEV) traction inverters and onboard chargers. |
| Propagation delay | 10 ns typical - ensures tight timing alignment between isolated control signals in motor gate drivers and ADC sampling clocks. |
| Sleep current | 750 µA per side - reduces system standby power in battery management systems during idle cycles without sacrificing wake-up responsiveness. |
| Operating temperature | –40 to 125 °C - meets automotive under-hood and industrial automation ambient requirements without derating. |
| Fail-safe output | Default-low configuration - guarantees known logic state at B-side outputs when A-side supply fails, critical for safe shutdown in power converters. |
| CMTI | 100 kV/µs minimum - maintains signal integrity in high-dV/dt environments like SiC/GaN-based inverters and isolated switch-mode supplies. |
Pinout & Package
SI86SM40EE-IS2R is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS reinforced isolation per UL 1577. Pin functions are validated per Figure 3 and Table 1 of Skyworks datasheet 206553B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides bias for A-side I/Os (A1–A4); requires 0.1 µF + 10 µF bypassing per side for noise immunity. |
| A1–A4 | Side A digital inputs/outputs | Four unidirectional channels from Side A to Side B; Schmitt-trigger + CMOS threshold inputs ensure robust noise rejection. |
| SMb | Sleep mode control | Active-low input that disables all transmitters and places outputs in tri-state; internal pull-up keeps device active if left floating. |
| Isolation Barrier | Die-level insulation | Semiconductor-based barrier certified to IEC 60747-17 and UL 1577; no optocoupler aging or LED degradation. |
| B1–B4 | Side B digital outputs | Four isolated outputs referenced to VDD2/GND2; default-low behavior activated when VDD1 is unpowered (≤2.25 V). |
| VDD2, GND2 | Side B power supply | Independent supply domain enables galvanic separation between controller and power stage grounds. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates startup initialization delay and avoids LED/optocoupler wear-out; enables immediate data transmission after power stabilization. |
| Sleep mode with wake-up capability | Reduces quiescent current to 750 µA per side while retaining one always-active channel to detect SMb transition and restore full operation within microseconds. |
| Reinforced safety certification | UL 1577 (6000 VRMS), VDE 60747-17, CSA 62368-1/60601-1 - satisfies end-equipment requirements for medical electronics and EV battery systems. |
| Tri-state output enable | SMb pin directly controls output driver state - allows seamless integration into shared-bus architectures without external bus buffers. |
| AEC-Q100 Grade 0 qualification | Validated for automotive applications up to 125 °C ambient; manufactured using automotive-specific process flows for zero-defect reliability in BEV and HEV systems. |
Applications
| Motor Control Gate Drivers | Automotive Battery Management Systems |
|---|---|
|
Use Scenario: Isolating PWM signals from MCU to high-voltage half-bridge gate drivers in 400 V/800 V traction inverters. IC Role / Device Role / Timing Role: Four forward-direction digital isolator providing timing-critical gate drive signals with 10 ns propagation delay and 100 kV/µs CMTI. Use Value: Prevents ground loop-induced shoot-through by breaking conductive paths while maintaining sub-15 ns channel-to-channel skew for precise dead-time control. |
Use Scenario: Transmitting cell voltage and temperature telemetry from high-side monitoring ICs to isolated MCU in multi-module battery packs. IC Role / Device Role / Timing Role: 4-channel isolator with default-low fail-safe mode ensures safe open-circuit reporting during sensor-side power loss. Use Value: Enables reliable fault detection during partial power failure without requiring external pull-down resistors or supervision circuitry. |
| Isolated Switch-Mode Power Supplies | Industrial PLC Analog Input Modules |
|
Use Scenario: Feedback path isolation for secondary-side voltage regulation in 1–3 kW AC/DC PSUs with SiC MOSFETs. IC Role / Device Role / Timing Role: High-speed isolator transmitting error amplifier output across isolation barrier with <15 ns total latency. Use Value: Supports >1 MHz switching frequencies by minimizing feedback loop delay, improving transient response and stability margins. |
Use Scenario: Isolating 4–20 mA current loop inputs and ADC interface lines in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Four-channel isolator with wide 2.25–5.5 V supply range interfaces directly to both 3.3 V microcontrollers and 5 V analog front-ends. Use Value: Eliminates need for level-shifting components and simplifies BOM by supporting mixed-voltage domains on either side of isolation barrier. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI86SM41EE-IS2R | Same pinout and package; differs only in fail-safe output state (default-high vs. default-low). | Used where isolated outputs must assert logic high during A-side power loss (e.g., enable signals for safety relays). | Select SI86SM41EE-IS2R only when default-high behavior is required; otherwise SI86SM40EE-IS2R provides correct fail-safe state for shutdown-critical paths. |
| ADUM3481ARWZ | 4-channel, 25 Mbps max data rate, 3750 VRMS isolation, no sleep mode, 2.7–5.5 V supply range. | Suitable for cost-sensitive industrial I/O modules but lacks automotive qualification and high-speed capability for EV traction control. | Choose ADUM3481ARWZ only for non-automotive, lower-speed applications where 150 Mbps and AEC-Q100 are not required. |
Compared with SI86SM41EE-IS2R, SI86SM40EE-IS2R provides guaranteed low-state outputs during input-side undervoltage - essential for fail-safe power converter shutdown. Versus ADUM3481ARWZ, it delivers 6× higher data rate, 60% higher isolation voltage, integrated sleep mode, and automotive qualification - making it suitable for next-generation BEV and industrial servo drives.
Availability
SI86SM40EE-IS2R is available at Aetrix Electronics and suitable for automotive battery management systems, traction inverters, and isolated switch-mode power supplies requiring stable component supply with long-term lifecycle support.
Supply support for SI86SM40EE-IS2R 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 wireless, automotive, and industrial markets.
The Si86Sxx family was designed specifically for high-reliability galvanic isolation in safety-critical systems - delivering RF-based performance, AEC-Q100 qualification, and reinforced insulation for EV powertrain and medical equipment applications.
FAQ
What is the isolation voltage rating of SI86SM40EE-IS2R and which safety standards does it meet?
SI86SM40EE-IS2R has a 6000 VRMS isolation rating per UL 1577 (1 minute test) and is certified to IEC 60747-17 (reinforced insulation), CSA 62368-1 and 60601-1, and CQC GB4943.1. These approvals validate its use in medical electronics and automotive battery systems where reinforced insulation is mandated for operator and system safety.
How does the SMb pin function in SI86SM40EE-IS2R, and what is its impact on power consumption?
The SMb pin is an active-low sleep mode control input. When driven low, SI86SM40EE-IS2R enters ultra-low-power sleep mode drawing just 750 µA per side while maintaining one always-on channel to monitor SMb. This enables rapid wake-up and eliminates the need for external power gating circuitry in battery-powered BMS nodes.
Does SI86SM40EE-IS2R require startup initialization or configuration before operation?
No. SI86SM40EE-IS2R uses RF-based on/off keying and requires no startup initialization, firmware loading, or configuration registers. It begins transmitting valid data immediately after VDD1 and VDD2 exceed their UVLO thresholds (~2.18 V), with outputs transitioning to the default-low state within 0.3 ms of power stabilization.
What is the default output behavior of SI86SM40EE-IS2R when the A-side supply fails?
SI86SM40EE-IS2R is ordered with default-low fail-safe mode. When VDD1 drops below 2.25 V (unpowered state), B-side outputs (B1–B4) are forced low regardless of input states - a critical feature for ensuring safe shutdown in isolated gate drivers and power converter feedback loops.
Can SI86SM40EE-IS2R be used in systems requiring AEC-Q100 qualification?
Yes. SI86SM40EE-IS2R is AEC-Q100 Grade 0 qualified (–40 to +125 °C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation. It is approved for use in onboard chargers, battery management systems, and traction inverters in battery electric and hybrid electric vehicles.
SI86SM40EE-IS2R 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:
- 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
SI86SM40EE-IS2R FAQ
1.How can I place an order for SI86SM40EE-IS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SM40EE-IS2R 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 SI86SM40EE-IS2R reliable?
The price and inventory of SI86SM40EE-IS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SM40EE-IS2R is usually 5 days.
3.What payment methods are accepted for SI86SM40EE-IS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SM40EE-IS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SM40EE-IS2R?
SI86SM40EE-IS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SM40EE-IS2R 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 SI86SM40EE-IS2R?
For technical support, including SI86SM40EE-IS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SM40EE-IS2R requirements.
6.How does Aetrix verify that SI86SM40EE-IS2R is sourced from the original manufacturer or authorized distributors?
All SI86SM40EE-IS2R 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 SI86SM40EE-IS2R meets industry standards.
7.What is the process for return or replacement of SI86SM40EE-IS2R?
All SI86SM40EE-IS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SM40EE-IS2R, 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 SI86SM40EE-IS2R part is unused and in its original packaging.
Return procedure for SI86SM40EE-IS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SM40EE-IS2R Tags
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