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Skyworks Solutions Inc. SI86S642HE-AS2R
- Part No.:
- SI86S642HE-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S642HE-AS2R.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:3,063
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Product details
Overview
SI86S642HE-AS2R from Skyworks Solutions is a 4-channel reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier. It supports DC to 150 Mbps data rates, delivers 10 ns typical propagation delay, and provides 6000 VRMS isolation rating in a WB SOIC-16 package. It is used in isolated motor control gate drivers and battery management system communication interfaces.
For engineers reviewing the SI86S642HE-AS2R datasheet, SI86S642HE-AS2R pinout, SI86S642HE-AS2R application, or SI86S642HE-AS2R equivalent, key selection criteria include reinforced IEC 60747-17 certification, fail-safe default-low output configuration, 2.25–5.5 V dual-supply operation, and 100 kV/µs CMTI performance - all verified for automotive-grade AEC-Q100 compliance.
Technical Context
The SI86S642HE-AS2R implements RF-based on/off keying modulation across its isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture includes Schmitt-trigger inputs with 0.15×VDD hysteresis and CMOS-compatible thresholds on both sides.
It features two forward and two reverse isolated channels, tri-state outputs controlled by EN1/EN2 pins, and a fail-safe mode that holds outputs low during unpowered VDD1 conditions while VDD2 remains active. The device operates across –40 °C to +125 °C and meets UL 1577 (6000 VRMS), VDE 60747-17, and CSA 62368-1 reinforced insulation standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed SPI, isolated ADC/DAC interfaces, and real-time motor control feedback loops. |
| Propagation delay | 10 ns typical - enables tight timing budgets in closed-loop power electronics and fast-response safety systems. |
| Isolation rating | 6000 VRMS - certified for reinforced insulation per UL 1577, suitable for 1000 VAC working voltage applications. |
| CMTI | ≥100 kV/µs - ensures reliable operation in noisy inverter and traction drive environments with rapid voltage transients. |
| Supply range | 2.25–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Fail-safe mode | Default low output - guarantees safe shutdown state in BMS and OBC systems when primary-side supply fails. |
| Operating temp | –40 to +125 °C - qualified for under-hood automotive and industrial ambient conditions without derating. |
| AEC-Q100 | Grade 1 qualified - validated for automotive powertrain and charging applications with zero defects at temperature cycling and HTOL stress. |
Pinout & Package
SI86S642HE-AS2R is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance ≥8.3 mm, supporting 6000 VRMS isolation. Pin numbering follows standard SOIC-16 layout with isolation barrier between Side A (pins 1–8) and Side B (pins 9–16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides 2.25–5.5 V bias for input-side logic; requires 0.1 µF + 10 µF local bypassing. |
| A1–A4 | Side A digital I/O | Four bidirectional isolated channels; configured as forward/reverse via internal RF modulation path. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low - enables shared-bus arbitration. |
| VDD2, GND2 | Side B power supply | Independent 2.25–5.5 V bias for output-side logic; galvanically isolated from VDD1. |
| B1–B4 | Side B digital I/O | Corresponding isolated outputs; maintain state integrity during VDD1 brownout if VDD2 remains powered. |
| EN2 | Side B output enable | Active-high control: places B-side outputs in tri-state - critical for multi-device daisy-chain configurations. |
Key Features
| Feature | Design Value |
|---|---|
| No-startup initialization | RF carrier modulation eliminates boot sequence delays - output transitions begin immediately after VDD exceeds UVLO+ (2.18 V). |
| Reinforced insulation | IEC 60747-17 certified barrier withstands 6000 VRMS for 1 minute - satisfies functional safety requirements in ISO 26262 ASIL-B/C systems. |
| Tri-state outputs | EN1/EN2 pins provide synchronous high-impedance control of all four channels per side - simplifies bus contention management in multi-isolator topologies. |
| Schmitt-trigger inputs | 0.15×VDD hysteresis rejects >36 ns noise pulses - prevents false triggering in EMI-heavy motor drive and charger PCB layouts. |
| Fail-safe default low | Guaranteed low output on B-side when VDD1 < 2.25 V and VDD2 is powered - enforces safe state in battery disconnect scenarios. |
| AEC-Q100 Grade 1 | Validated across –40 °C to +125 °C with HTOL, TC, and ESD testing - meets automotive production reliability KPIs for onboard chargers and inverters. |
Applications
| Motor Control Gate Driver Isolation | Automotive Onboard Charger (OBC) |
|---|---|
Use Scenario: Isolating PWM signals between MCU and high-voltage IGBT/SiC gate drivers in 3-phase inverters. IC Role / Device Role / Timing Role: Bidirectional signal isolator transmitting gate enable/disable and fault feedback across 6000 VRMS barrier with 10 ns propagation delay. Use Value: Enables precise timing alignment between control logic and power stage, reducing shoot-through risk and improving efficiency in 10–20 kHz switching applications. | Use Scenario: Isolating CAN communication and analog sensing between low-voltage MCU and high-voltage DC-DC converter stages in EV OBC modules. IC Role / Device Role / Timing Role: 4-channel isolator separating control-side SPI commands and isolated ADC readings in AC/DC and DC/DC sections. Use Value: Maintains data integrity across 1000 V potential difference while meeting CISPR-25 Class 5 EMI limits due to 100 kV/µs CMTI. |
| Battery Management System (BMS) | Traction Inverter Control |
Use Scenario: Isolating cell voltage monitoring data and balancing commands between battery pack and master controller in 400–800 V EV architectures. IC Role / Device Role / Timing Role: Fail-safe default-low isolator ensuring open-circuit response during primary-side power loss in high-side sensing circuits. Use Value: Prevents erroneous cell balancing activation during brownout, enhancing functional safety compliance for ASIL-D diagnostic coverage. | Use Scenario: Isolating torque command signals and resolver feedback in electric axle inverters operating at ambient up to 125 °C. IC Role / Device Role / Timing Role: AEC-Q100 qualified isolator delivering 150 Mbps data throughput for real-time current/voltage sampling synchronization. Use Value: Supports 100 kHz sampling rates required for field-oriented control (FOC) algorithms without timing jitter-induced torque ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4402BRWZ | 4-channel, 100 Mbps, 5000 VRMS, SOIC-16, non-AEC-Q100 | Lacks automotive qualification and 6000 VRMS rating; lower CMTI (75 kV/µs) | Acceptable for industrial automation where AEC-Q100 and reinforced insulation are not mandated. |
| ISO7741FDWR | 4-channel, 100 Mbps, 5000 VRMS, SOIC-16, AEC-Q100 Grade 1 | Same isolation rating and qualification, but no default-low fail-safe option; higher quiescent current (3.2 mA/channel) | Preferred when fail-safe polarity is not required and TI ecosystem integration is prioritized. |
Compared with ADUM4402BRWZ and ISO7741FDWR, SI86S642HE-AS2R uniquely combines 6000 VRMS reinforced insulation, AEC-Q100 Grade 1, and factory-configured default-low fail-safe behavior - making it the only option qualified for high-voltage automotive charging and traction inverter control without external pull-down circuitry.
Availability
SI86S642HE-AS2R is available at Aetrix Electronics and suitable for automotive onboard chargers, battery management systems, and industrial motor control systems requiring stable component supply across extended product lifecycles.
Supply support for SI86S642HE-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.
The Si86S6xx family is engineered for high-reliability isolation in automotive and industrial power systems, emphasizing reinforced safety certification, high CMTI, and fail-safe behavior for functional safety-critical applications.
FAQ
What is the isolation voltage rating of SI86S642HE-AS2R and which safety standards does it meet?
SI86S642HE-AS2R is rated for 6000 VRMS isolation per UL 1577 for 1 minute and certified to IEC 60747-17 (reinforced), CSA 62368-1, and CQC GB4943.1. These approvals validate its use in high-voltage automotive and industrial systems requiring reinforced insulation barriers.
Does SI86S642HE-AS2R require startup initialization before transmitting data?
No, SI86S642HE-AS2R uses RF-based on/off keying and requires no startup initialization. Output transitions begin within 0.3 ms after VDD exceeds UVLO+ (2.18 V), enabling immediate signal transfer upon power-up - critical for safety-critical automotive subsystems.
What is the function of the EN1 and EN2 pins on SI86S642HE-AS2R?
EN1 and EN2 are active-high output enable pins controlling all four channels on Side A and Side B respectively. When low, they place corresponding outputs in high-impedance state - essential for bus arbitration and multi-device isolation networks in motor control and OBC designs.
How does the fail-safe default-low configuration of SI86S642HE-AS2R improve system safety?
When VDD1 drops below 2.25 V while VDD2 remains powered, SI86S642HE-AS2R forces B-side outputs low. This behavior prevents unintended activation of high-side switches or gate drivers during primary-side power loss - a mandatory feature for ASIL-B/C compliant BMS and traction inverter designs.
What is the maximum data rate supported by SI86S642HE-AS2R and what timing performance does it deliver?
SI86S642HE-AS2R supports DC to 150 Mbps data rates with 10 ns typical propagation delay and 3.5 ns pulse width distortion. This enables high-fidelity transmission of fast SPI commands, resolver feedback, and PWM edge signals in real-time power electronics control loops.
SI86S642HE-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:
- 2/2
- 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
SI86S642HE-AS2R FAQ
1.How can I place an order for SI86S642HE-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642HE-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 SI86S642HE-AS2R reliable?
The price and inventory of SI86S642HE-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642HE-AS2R is usually 5 days.
3.What payment methods are accepted for SI86S642HE-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642HE-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642HE-AS2R?
SI86S642HE-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642HE-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 SI86S642HE-AS2R?
For technical support, including SI86S642HE-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642HE-AS2R requirements.
6.How does Aetrix verify that SI86S642HE-AS2R is sourced from the original manufacturer or authorized distributors?
All SI86S642HE-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 SI86S642HE-AS2R meets industry standards.
7.What is the process for return or replacement of SI86S642HE-AS2R?
All SI86S642HE-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642HE-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 SI86S642HE-AS2R part is unused and in its original packaging.
Return procedure for SI86S642HE-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642HE-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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