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Skyworks Solutions Inc. SI86S642BB-IU
- Part No.:
- SI86S642BB-IU
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI86S642BB-IU.pdf
- Description:
- 2.5 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,049
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Product details
Overview
SI86S642BB-IU from Skyworks Solutions is a 4-channel, reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier. It delivers DC to 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating in a narrow-body SOIC-16 package. It operates from 2.25–5.5 V supplies and supports fail-safe default-high or default-low output states-used in isolated motor control gate drivers and battery management system communication interfaces.
For engineers reviewing the SI86S642BB-IU datasheet, SI86S642BB-IU pinout, SI86S642BB-IU application, or SI86S642BB-IU equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade AEC-Q100 qualification, IEC 60747-17 reinforced insulation compliance, and real-world use cases in onboard chargers and traction inverters.
Technical Context
The SI86S642BB-IU implements RF-based on/off keying modulation across its isolation barrier-eliminating startup initialization and enabling robust noise immunity without optical components. Each channel integrates independent Schmitt-trigger + CMOS threshold inputs and tri-state outputs controlled by side-specific enable pins (EN1/EN2).
It features dual undervoltage lockout (UVLO) monitors per side (VDD1/VDD2), reset detection at ~1.7 V (RSTB), and configurable fail-safe output behavior during unpowered input conditions. The device supports 36 ns input deglitch filtering and achieves 100 kV/µs transient immunity-critical for high-noise industrial motor drives and EV power stages.
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 control loops. |
| Propagation Delay | 10 ns typical - enables tight timing budgets in gate driver feedback paths and fast-loop motor control. |
| Isolation Rating | 6000 VRMS - meets reinforced insulation requirements for 1000 VAC+ systems per UL 1577 and IEC 60747-17. |
| Supply Voltage | 2.25–5.5 V - interoperable with 3.3 V and 5 V logic domains on both sides without level shifters. |
| Operating Temp | –40 to +125 °C - qualified for under-hood automotive applications including onboard chargers and BMS. |
| CMTI | 100 kV/µs min - prevents false triggering in high-dV/dt environments like SiC/GaN inverter switching nodes. |
| AEC-Q100 | Qualified - manufactured using automotive-specific process flows with PPAP, IMDS, and CAMDS support. |
Pinout & Package
Narrow-body SOIC-16 (NB SOIC-16) package with 8.3 mm creepage/clearance, RoHS-compliant, and rated for 6000 VRMS isolation per UL 1577.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A supply and ground | Power domain for input-side channels (A1–A4); requires 0.1 µF + 10 µF bypass capacitors. |
| A1–A4 | Digital I/O (Side A) | Four isolated input/output channels on primary side; Schmitt-trigger + CMOS thresholds for noise immunity. |
| EN1 | Active-high enable (Side A) | Tri-states all A-side outputs when low; used for synchronized shutdown in multi-isolator systems. |
| VDD2, GND2 | Side B supply and ground | Independent power domain for output-side channels (B1–B4); supports different voltage than Side A. |
| B1–B4 | Digital I/O (Side B) | Four isolated output/input channels on secondary side; electrically and functionally identical to A-side. |
| EN2 | Active-high enable (Side B) | Tri-states all B-side outputs when low; enables independent control of isolated domain output states. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | No startup initialization required; eliminates boot-up delays and configuration dependencies in safety-critical systems. |
| Selectable fail-safe mode | Ordering option determines default output state (high or low) during VDD1 loss-prevents undefined gate drive or ADC reference states. |
| 36 ns input deglitch filter | Rejects sub-36 ns noise pulses on A1–A4/B1–B4 lines-essential for reliable operation near high-frequency power converters. |
| Tri-state outputs with EN1/EN2 | Enables bus sharing and hot-swap capability in modular power systems without contention or latch-up risk. |
| Reinforced IEC 60747-17 rating | Validated for functional safety applications up to SIL-3/ASIL-D in conjunction with system-level analysis. |
Applications
| Industrial Motor Control | Automotive Onboard Charger |
|---|---|
|
Use Scenario: Isolating PWM signals and fault feedback between MCU and IGBT/SiC gate drivers in servo drives. IC Role / Device Role / Timing Role: Bidirectional digital isolator providing timing-critical gate drive enable/disable and desaturation fault reporting across 1000 VDC bus. Use Value: 10 ns propagation delay ensures <100 ns total loop latency; 100 kV/µs CMTI prevents false triggering during 50 kV/µs switching transients. |
Use Scenario: Isolating CAN communication and analog sensor signals between OBC controller and high-voltage battery pack. IC Role / Device Role / Timing Role: Reinforced isolator for 3.3 V MCU side ↔ 5 V sensor/actuator side, supporting AEC-Q100 temperature and reliability requirements. Use Value: 6000 VRMS rating satisfies reinforced insulation for 800 V battery systems; –40 to +125 °C operation covers full OBC thermal envelope. |
| Isolated ADC Interface | Traction Inverter Control |
|
Use Scenario: Isolating serial interface (SPI) between precision ADC and host processor in isolated current/voltage sensing modules. IC Role / Device Role / Timing Role: High-speed digital isolator preserving 150 Mbps SPI clock integrity while blocking common-mode noise from power stage. Use Value: 150 Mbps data rate supports oversampled 24-bit ADC readouts at >1 MSPS; low pulse width distortion (3.5 ns) maintains timing accuracy. |
Use Scenario: Isolating phase current feedback and DC-link voltage monitoring signals in 3-phase traction inverters for BEVs. IC Role / Device Role / Timing Role: Four-channel isolator handling three phase current sense signals plus DC-link voltage scaling output. Use Value: Dual UVLO and RSTB reset ensure deterministic behavior during rapid HV bus ramp-up/down; AEC-Q100 qualification validates lifetime reliability. |
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 max data rate; 3750 VRMS isolation; no AEC-Q100 qualification; 16-lead SOIC wide-body. | Targeted at industrial automation, not automotive; lacks 150 Mbps capability and 6000 VRMS rating for 800 V systems. | Choose ADUM2402BRWZ only for cost-sensitive non-automotive designs where 25 Mbps and 3750 VRMS suffice. |
| ISO6742QDWR | 4-channel, 50 Mbps max data rate; 5000 VRMS; AEC-Q100 Grade 1 (–40 to +125 °C); 16-pin SOIC NB. | Supports automotive temp range but limited to 50 Mbps and 5000 VRMS-insufficient for next-gen 800 V OBCs requiring 6000 VRMS. | ISO6742QDWR fits legacy 400 V BEV architectures but cannot replace SI86S642BB-IU in 800 V traction or fast-charging systems. |
Compared with ADUM2402BRWZ and ISO6742QDWR, SI86S642BB-IU uniquely combines 150 Mbps speed, 6000 VRMS reinforced isolation, AEC-Q100 Grade 0 qualification, and 36 ns input filtering-making it the only drop-in solution for high-performance automotive and industrial isolation where timing, voltage, and noise immunity are co-constrained.
Availability
SI86S642BB-IU is available at Aetrix Electronics and suitable for industrial motor control, automotive onboard chargers, and traction inverter designs requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI86S642BB-IU 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 was designed specifically for high-reliability, high-speed digital isolation in automotive and industrial power systems-emphasizing reinforced safety certification, noise immunity, and extended temperature operation.
FAQ
What is the isolation voltage rating of SI86S642BB-IU and which safety standards does it meet?
The SI86S642BB-IU is rated for 6000 VRMS isolation per UL 1577 for 1 minute and carries reinforced insulation certification per IEC 60747-17, CSA 62368-1/60601-1, and CQC GB4943.1. This rating applies to the narrow-body SOIC-16 package and is validated for continuous operation in systems with working voltages up to 1000 VAC or 1500 VDC, making it suitable for 800 V battery systems in electric vehicles.
Does SI86S642BB-IU require external startup configuration or initialization firmware?
No, SI86S642BB-IU requires no startup initialization or firmware configuration. Its RF-based on/off keying architecture enables immediate operation upon power-up. Outputs follow inputs after a 0.3 ms stabilization period governed by internal UVLO and reset circuitry-ensuring deterministic behavior in safety-critical motor control and battery management applications without software dependency.
How does the fail-safe mode work on SI86S642BB-IU, and how is it selected?
The fail-safe mode on SI86S642BB-IU determines the default output state (high or low) when VDD1 is unpowered but VDD2 remains active. This behavior is fixed at manufacturing via ordering option-SI86S642BB-IU is the default-low variant. The selection avoids undefined states in gate driver enable lines or ADC reference paths during partial power loss, directly supporting functional safety requirements in ASIL-B/C systems.
What is the purpose of the 36 ns input deglitch filter in SI86S642BB-IU?
The 36 ns input deglitch filter in SI86S642BB-IU rejects noise pulses shorter than 36 ns on all four channels (A1–A4/B1–B4), preventing false edge detection from EMI, switching transients, or coupling in high-power environments. This feature is factory-enabled for the SI86S642BB-IU variant and is critical for reliable operation in SiC/GaN inverter gate drive feedback and isolated current sensing interfaces.
Can SI86S642BB-IU be used in both industrial and automotive applications?
Yes, SI86S642BB-IU is qualified for both industrial and automotive use. It meets AEC-Q100 Grade 0 (–40 to +125 °C), includes AIAG-compliant PPAP documentation, and supports IMDS/CAMDS reporting-fulfilling OEM requirements for onboard chargers, battery management systems, and traction inverters. Its 6000 VRMS rating and 100 kV/µs CMTI also satisfy industrial automation and motor control standards.
SI86S642BB-IU Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (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:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- 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-QSOP
SI86S642BB-IU FAQ
1.How can I place an order for SI86S642BB-IU through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642BB-IU 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 SI86S642BB-IU reliable?
The price and inventory of SI86S642BB-IU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642BB-IU is usually 5 days.
3.What payment methods are accepted for SI86S642BB-IU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642BB-IU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642BB-IU?
SI86S642BB-IU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642BB-IU 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 SI86S642BB-IU?
For technical support, including SI86S642BB-IU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642BB-IU requirements.
6.How does Aetrix verify that SI86S642BB-IU is sourced from the original manufacturer or authorized distributors?
All SI86S642BB-IU 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 SI86S642BB-IU meets industry standards.
7.What is the process for return or replacement of SI86S642BB-IU?
All SI86S642BB-IU units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642BB-IU, 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 SI86S642BB-IU part is unused and in its original packaging.
Return procedure for SI86S642BB-IU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642BB-IU 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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