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Skyworks Solutions Inc. SI86SM42EE-IS2R
- Part No.:
- SI86SM42EE-IS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86SM42EE-IS2R.pdf
- Description:
- 6.0 KVRMS SLEEP MODE ISOLATOR, 4
- Quantity:
- Payment:
- Shipping:
Inventory:4,587
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Product details
Overview
SI86SM42EE-IS2R from Skyworks Solutions is a 4-channel reinforced digital isolator with sleep mode control (SMb pin), two forward and two reverse signal paths, 6000 VRMS isolation rating, and AEC-Q100 qualification for automotive use in battery management systems and traction inverters.
For engineers reviewing the SI86SM42EE-IS2R datasheet, SI86SM42EE-IS2R pinout, SI86SM42EE-IS2R application, or SI86SM42EE-IS2R equivalent, this page delivers verified specifications including 10 ns propagation delay, 150 Mbps data rate, 2.25–5.5 V dual supply range, fail-safe default-low output, and WB SOIC-16 package with reinforced IEC 60747-17 insulation.
Technical Context
The SI86SM42EE-IS2R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity (100 kV/µs CMTI) without optical degradation. Its architecture supports independent side-A/side-B undervoltage lockout (UVLO) and reset thresholds (RSTB± ~1.7 V), ensuring deterministic behavior during power transients.
Sleep mode is controlled via the active-low SMb pin on side A, reducing quiescent current to 750 µA per side while retaining 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 output polarity (default low per -IS2R suffix).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces including isolated SPI and QSPI data lanes. |
| Propagation delay | 10 ns typical - enables precise timing-critical applications such as motor gate drive synchronization. |
| Isolation rating | 6000 VRMS for 1 minute - meets reinforced insulation requirements per UL 1577 and IEC 60747-17. |
| 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 environments. |
| CMTI | ≥100 kV/µs - ensures reliable operation in high-dv/dt noise environments like inverters and SMPS. |
| Fail-safe mode | Default low output - maintains safe system state during side-A power loss (confirmed by -IS2R ordering code). |
Pinout & Package
SI86SM42EE-IS2R is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS reinforced insulation. Pin 1 is marked with a dot; pin 16 is VDD2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A power supply | Supplies 2.25–5.5 V to input-side circuitry; requires 0.1 µF + 10 µF bypass capacitors. |
| A1–A4 | Side A digital I/O | Four bidirectional channels: A1/A2 forward (A→B), A3/A4 reverse (B→A); CMOS/Schmitt inputs. |
| SMb | Sleep mode control | Active-low pin on side A; drives device into 750 µA/side sleep mode when asserted. |
| GND1 | Side A ground | Reference for side A signals and supplies; must be separated from GND2 by isolation barrier. |
| B1–B4 | Side B digital I/O | Corresponding isolated outputs/inputs: B1/B2 mirror A1/A2 (forward), B3/B4 mirror A3/A4 (reverse). |
| GND2 | Side B ground | Reference for side B signals; galvanically isolated from GND1; requires separate bypass capacitors. |
| VDD2 | Side B power supply | Supplies 2.25–5.5 V to output-side circuitry; independent of VDD1 for dual-domain operation. |
| NC | No connect | Pin 9 is not bonded; must remain unconnected per datasheet Figure 3 for Si86SM42. |
Key Features
| Feature | Design Value |
|---|---|
| Sleep mode control (SMb) | Reduces total quiescent current to 750 µA per side while retaining wake-up capability via single always-on monitoring channel. |
| Reinforced IEC 60747-17 rating | Validates 6000 VRMS withstand for 1 minute and supports end-system compliance with IEC 62368-1 and IEC 60601-1. |
| Fail-safe default-low output | Guarantees B1–B4 outputs drive low during side-A power loss, critical for safety-critical shutdown sequences. |
| RF-based isolation architecture | Eliminates LED aging and temperature drift; achieves 10 ns propagation delay and 3.5 ns pulse width distortion. |
| High CMTI (≥100 kV/µs) | Prevents false triggering in high-noise motor drives and inverters where fast switching induces large dv/dt transients. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating gate driver signals and feedback in 3-phase inverter stacks for HVAC compressors and servo drives. IC Role / Device Role / Timing Role: Provides bidirectional isolated communication between MCU (side A) and isolated gate drivers/sensors (side B) with sub-10 ns timing fidelity. Use Value: Enables precise PWM edge alignment and fault reporting across isolation barrier without added latency or jitter. |
Use Scenario: Isolating cell voltage monitoring and balancing signals between battery pack controller and analog front-end ICs in EV battery packs. IC Role / Device Role / Timing Role: Transfers ADC conversion results and balance command signals across reinforced barrier with fail-safe low default during MCU brownout. Use Value: Maintains safe discharge path activation even during partial power loss, meeting ASIL-B functional safety requirements. |
| Isolated Switch-Mode Power Supply | Traction Inverter Control |
|
Use Scenario: Feedback isolation in 1–3 kW AC/DC and DC/DC converters using digital controllers (e.g., UCC289x, ZVS resonant topologies). IC Role / Device Role / Timing Role: Carries opto-replacement PWM feedback and auxiliary status signals (e.g., overtemp, OV/UV) with 150 Mbps bandwidth. Use Value: Supports high-frequency switching (>500 kHz) with minimal propagation delay impact on loop stability. |
Use Scenario: Isolating control signals between vehicle ECU and high-power IGBT/SiC gate driver stages in 400 V/800 V traction inverters. IC Role / Device Role / Timing Role: Delivers synchronized gate enable/disable and fault acknowledgments across 6000 VRMS barrier with AEC-Q100 qualification. Use Value: Ensures robust operation at 125 °C ambient and withstands >100 kV/µs common-mode transients from SiC switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8642ED-IS2R | No SMb pin; fixed normal operation only; identical pinout and 6000 VRMS rating. | Lacks sleep mode - unsuitable for duty-cycled systems requiring ultra-low standby power. | Select when continuous operation is required and sleep control is unnecessary. |
| ADUM4402BRWZ | 4-channel, 5 kVRMS, 100 Mbps, no sleep mode, different pinout (SOIC-16 NB), non-AEC-Q100. | Lower isolation rating and no automotive qualification limit use in BMS/traction systems. | Consider for cost-sensitive industrial applications where 5 kVRMS suffices and AEC-Q100 is not mandated. |
Compared with SI86SM42EE-IS2R, SI8642ED-IS2R offers identical performance without sleep mode overhead, while ADUM4402BRWZ provides legacy compatibility but lacks reinforced insulation and automotive qualification needed for high-reliability EV subsystems.
Availability
SI86SM42EE-IS2R is available at Aetrix Electronics and suitable for automotive battery management systems, traction inverter control, and isolated switch-mode power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SI86SM42EE-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.
The Si86Sxx family was designed specifically for high-reliability isolation in automotive and industrial systems, emphasizing reinforced safety certification, wide temperature operation, and RF-based noise immunity over legacy optocouplers.
FAQ
What is the isolation rating and safety certification status of SI86SM42EE-IS2R?
SI86SM42EE-IS2R provides 6000 VRMS isolation for 1 minute per UL 1577 and is certified to IEC 60747-17 (reinforced insulation), CSA 62368-1/60601-1, and CQC GB4943.1. It is AEC-Q100 qualified for automotive use. These certifications are confirmed in the official Skyworks datasheet revision 206553B and apply directly to the SI86SM42EE-IS2R part number.
How does the SMb pin function in SI86SM42EE-IS2R, and what is its power impact?
The SMb pin on SI86SM42EE-IS2R is an active-low sleep mode control input on side A. When driven low, it reduces total quiescent current to 750 µA per side. One internal channel remains active to monitor SMb state and restart the device when SMb is released high or left open. This behavior is documented in Section 3.4.2 of the SI86SM42EE-IS2R datasheet.
What does the "-IS2R" suffix indicate for SI86SM42EE-IS2R?
The "-IS2R" suffix in SI86SM42EE-IS2R specifies default-low fail-safe output behavior during side-A power loss and confirms packaging in WB SOIC-16 with tape-and-reel delivery. This ordering code is defined in Table 11 ("Ordering Information") of the Skyworks Si86S6xx datasheet and applies exclusively to this variant.
Does SI86SM42EE-IS2R support bidirectional signal flow, and how is direction configured?
Yes, SI86SM42EE-IS2R supports bidirectional isolation: A1/A2 → B1/B2 (forward) and B3/B4 → A3/A4 (reverse). Direction is fixed per channel pair and does not require external control pins - unlike Si86SQ44, it has no DIR pin. This configuration is shown in Figure 3 of the datasheet for Si86SM42.
What are the recommended bypass capacitors and layout practices for SI86SM42EE-IS2R?
SI86SM42EE-IS2R requires 0.1 µF and 10 µF ceramic bypass capacitors placed as close as possible to VDD1/GND1 and VDD2/GND2 pairs. Layout must maintain physical separation between primary and secondary side traces to meet creepage/clearance requirements for 6000 VRMS. These guidelines are specified in Sections 3.2.1 and 3.2 of the official datasheet.
SI86SM42EE-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:
- 2/2
- 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
SI86SM42EE-IS2R FAQ
1.How can I place an order for SI86SM42EE-IS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86SM42EE-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 SI86SM42EE-IS2R reliable?
The price and inventory of SI86SM42EE-IS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86SM42EE-IS2R is usually 5 days.
3.What payment methods are accepted for SI86SM42EE-IS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86SM42EE-IS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86SM42EE-IS2R?
SI86SM42EE-IS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86SM42EE-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 SI86SM42EE-IS2R?
For technical support, including SI86SM42EE-IS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86SM42EE-IS2R requirements.
6.How does Aetrix verify that SI86SM42EE-IS2R is sourced from the original manufacturer or authorized distributors?
All SI86SM42EE-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 SI86SM42EE-IS2R meets industry standards.
7.What is the process for return or replacement of SI86SM42EE-IS2R?
All SI86SM42EE-IS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86SM42EE-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 SI86SM42EE-IS2R part is unused and in its original packaging.
Return procedure for SI86SM42EE-IS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86SM42EE-IS2R Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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