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Skyworks Solutions Inc. SI86SM42EC-IS1R
- Part No.:
- SI86SM42EC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86SM42EC-IS1R.pdf
- Description:
- 3.75 KVRMS SLEEP MODE ISOLATOR,
- Quantity:
- Payment:
- Shipping:
Inventory:3,808
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Product details
Overview
SI86SM42EC-IS1R from Skyworks Solutions is a four-channel reinforced digital isolator with two forward and two reverse signal paths, 6000 VRMS isolation rating, 150 Mbps data rate, and integrated sleep mode control (SMb pin). It operates across 2.25–5.5 V supplies and supports industrial motor control, isolated ADC/DAC interfaces, and battery management systems.
For engineers reviewing the SI86SM42EC-IS1R datasheet, SI86SM42EC-IS1R pinout, SI86SM42EC-IS1R application, or SI86SM42EC-IS1R equivalent, this device delivers precise timing (10 ns propagation delay), high CMTI (>100 kV/µs), fail-safe output configuration, and AEC-Q100 qualification for automotive-grade reliability in high-noise, high-voltage environments.
Technical Context
The SI86SM42EC-IS1R implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its dual-supply architecture (VDD1/VDD2) supports independent 2.25–5.5 V operation per side with undervoltage lockout (UVLO) and reset thresholds at 2.18 V (rising) and 1.7 V (RSTB).
Sleep mode is controlled via the active-low SMb pin: driving SMb low reduces quiescent current to 750 µA per side while maintaining one always-on channel to monitor SMb state; releasing SMb (high or open) restores full operation. Pin-compatible with WB SOIC-16 package, it supports tri-state outputs, Schmitt-trigger + CMOS inputs, and selectable default-high/low fail-safe outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including SPI and isolated sensor interfaces without protocol translation. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for safety-critical industrial and automotive applications. |
| Propagation delay | 10 ns (typical) - enables tight timing budgets in closed-loop motor control and real-time power converter feedback paths. |
| Supply voltage | 2.25–5.5 V per side - allows direct interfacing with 3.3 V and 5 V logic domains without level shifters. |
| CMTI | >100 kV/µs (min) - ensures reliable operation in high dv/dt environments such as traction inverters and SMPS gate drivers. |
| Sleep current | 750 µA per side - reduces system standby power in battery-powered BMS and portable medical equipment. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient conditions without derating. |
Pinout & Package
SI86SM42EC-IS1R is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS reinforced insulation. The package meets RoHS compliance and supports automated PCB assembly.
| 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 pin. |
| GND1 | Side A ground | Reference return for Side A logic and supply; must be separated from GND2 by isolation barrier. |
| A1–A4 | Side A I/O | Four digital I/O pins on main side; A1/A2 are forward channels, A3/A4 are reverse channels. |
| SMb | Sleep mode control | Active-low input controlling global sleep mode; drives device into 750 µA/side low-power state. |
| NC | No connect | Pin 9 is unconnected internally; must be left floating or tied to GND per layout guidelines. |
| GND2 | Side B ground | Reference return for Side B logic; galvanically isolated from GND1 by internal barrier. |
| B1–B4 | Side B I/O | Four digital I/O pins on isolated side; B1/B2 mirror A1/A2 (forward), B3/B4 mirror A3/A4 (reverse). |
| VDD2 | Side B supply | Isolated-side power input (2.25–5.5 V); independent of VDD1 for dual-domain operation. |
Key Features
| Feature | Design Value |
|---|---|
| Sleep mode control (SMb) | Reduces total quiescent current to 1.5 mA (750 µA per side) while retaining wake-up capability via single-pin assertion. |
| Reinforced 6000 VRMS isolation | Enables safe interface between hazardous AC mains or high-voltage DC bus and low-voltage MCU domains in EV chargers and inverters. |
| Fail-safe output selection | Factory-configured default-high or default-low output state during VDD loss - prevents undefined states in safety-critical shutdown sequences. |
| RF modulation architecture | Eliminates startup delay and aging drift vs. optocouplers; achieves 10 ns propagation delay with 3.5 ns pulse width distortion. |
| AEC-Q100 Grade 1 qualification | Validated for automotive use up to +125 °C ambient, supporting onboard chargers, BMS, and traction inverter control modules. |
Applications
| Motor Control Systems | Isolated ADC/DAC Interfaces |
|---|---|
|
Use Scenario: Gate driver signal isolation in three-phase PMSM inverters with >600 V DC bus. IC Role / Device Role / Timing Role: Isolates PWM signals from MCU to high-side/lower-side gate drivers while preserving <10 ns timing accuracy. Use Value: Enables precise dead-time control and prevents shoot-through faults under fast dv/dt transients (>100 kV/µs). |
Use Scenario: Isolating analog front-end signals from precision 16-bit ADCs in industrial PLC I/O modules. IC Role / Device Role / Timing Role: Transfers conversion-ready strobes and data clocks across isolation barrier with sub-ns jitter. Use Value: Maintains effective number of bits (ENOB) by preventing ground loop noise coupling into sensitive analog measurement paths. |
| Battery Management Systems | Onboard EV Chargers |
|
Use Scenario: Cell voltage monitoring and balancing command isolation in 800 V BEV battery packs. IC Role / Device Role / Timing Role: Relays cell-level fault alerts and balancing enable signals from isolated slave controllers to master MCU. Use Value: Ensures functional safety (ASIL-B compliant) by preventing high-voltage transients from propagating to low-voltage control domain. |
Use Scenario: Isolating communication between AC/DC PFC controller and DC/DC LLC controller in bidirectional OBCs. IC Role / Device Role / Timing Role: Transfers digital control commands and status flags across 6000 VRMS barrier with deterministic latency. Use Value: Supports synchronized interleaved switching and real-time fault coordination without signal distortion or delay variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2402BRWZ | 4-channel, 25 Mbps, 2500 VRMS, no sleep mode, SOIC-16 (narrow body) | Limited to lower-speed industrial I/O; lacks AEC-Q100 qualification and 6000 VRMS rating. | Choose when cost sensitivity outweighs speed, isolation, and automotive requirements. |
| ISO6742FDWR | 4-channel, 50 Mbps, 5000 VRMS, no SMb pin, SOIC-16 (wide body) | Supports only basic isolation; missing fail-safe output selection and reinforced 6000 VRMS certification. | Prefer for non-automotive, non-safety-critical 50 Mbps applications where sleep mode is unnecessary. |
Compared with ADUM2402BRWZ and ISO6742FDWR, SI86SM42EC-IS1R provides higher data rate (150 Mbps), certified 6000 VRMS reinforced isolation, AEC-Q100 qualification, and active sleep mode control-making it uniquely suited for next-generation EV power electronics and high-reliability industrial automation.
Availability
SI86SM42EC-IS1R is available at Aetrix Electronics and suitable for motor control systems, battery management systems, onboard EV chargers, and isolated ADC/DAC interfaces requiring stable component supply across automotive and industrial design cycles.
Supply support for SI86SM42EC-IS1R 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 leader in analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for high-performance wireless and power systems.
The Si86S6xx/Lxx/Mxx/Qxx/Sxx family was designed specifically for high-reliability, high-speed digital isolation in automotive traction systems, industrial motor drives, and medical equipment requiring reinforced safety certification.
FAQ
What is the isolation voltage rating of SI86SM42EC-IS1R?
The SI86SM42EC-IS1R has a certified 6000 VRMS isolation rating for 1 minute per UL 1577 and meets reinforced insulation requirements per IEC 60747-17. This rating applies to the WB SOIC-16 package and is validated for continuous operation in systems with working voltages up to 1200 V peak. SI86SM42EC-IS1R maintains this rating across its full –40 to +125 °C operating range.
Does SI86SM42EC-IS1R support fail-safe output configuration?
Yes, SI86SM42EC-IS1R offers factory-selectable fail-safe output behavior: either default-high or default-low output state when the input-side supply (VDD1) is unpowered but the output-side supply (VDD2) remains active. This behavior is defined at order time and cannot be changed in-circuit. SI86SM42EC-IS1R implements this using internal UVLO and reset circuitry with RSTB threshold at ~1.7 V.
How does the SMb pin function in SI86SM42EC-IS1R?
The SMb pin is an active-low sleep mode control input. When driven low, SI86SM42EC-IS1R enters sleep mode drawing just 750 µA per side while keeping one isolation channel active to monitor SMb. Releasing SMb (driving high or leaving open) wakes the device within microseconds. SI86SM42EC-IS1R retains full 150 Mbps performance and timing specs upon wake-up with no reinitialization required.
What package type is used for SI86SM42EC-IS1R?
SI86SM42EC-IS1R uses a wide-body SOIC-16 (WB SOIC-16) package with 7.5 mm creepage and clearance, optimized to achieve 6000 VRMS reinforced isolation. The package is RoHS-compliant, lead-free, and compatible with standard surface-mount assembly processes. Pin 9 is NC and must not be soldered to a net.
Is SI86SM42EC-IS1R qualified for automotive applications?
Yes, SI86SM42EC-IS1R is AEC-Q100 Grade 1 qualified (–40 to +125 °C) and supports AIAG-compliant PPAP documentation. It is built using automotive-specific manufacturing flows and includes IMDS/CAMDS compliance. SI86SM42EC-IS1R is approved for use in onboard chargers, battery management systems, and traction inverters in hybrid and battery electric vehicles.
SI86SM42EC-IS1R 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:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- 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
SI86SM42EC-IS1R FAQ
1.How can I place an order for SI86SM42EC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SM42EC-IS1R 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 SI86SM42EC-IS1R reliable?
The price and inventory of SI86SM42EC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SM42EC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86SM42EC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SM42EC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SM42EC-IS1R?
SI86SM42EC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SM42EC-IS1R 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 SI86SM42EC-IS1R?
For technical support, including SI86SM42EC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SM42EC-IS1R requirements.
6.How does Aetrix verify that SI86SM42EC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86SM42EC-IS1R 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 SI86SM42EC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86SM42EC-IS1R?
All SI86SM42EC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SM42EC-IS1R, 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 SI86SM42EC-IS1R part is unused and in its original packaging.
Return procedure for SI86SM42EC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SM42EC-IS1R 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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