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Skyworks Solutions Inc. SI86S663BB-IU
- Part No.:
- SI86S663BB-IU
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI86S663BB-IU.pdf
- Description:
- 2.5 KVRMS ISOLATOR, 6 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:1,834
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Product details
Overview
SI86S663BB-IU from Skyworks Solutions is a 6-channel, reinforced-isolation digital isolator with bidirectional signal capability across an integrated semiconductor barrier. It delivers DC–150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating in a WB SOIC-16 package. It operates from 2.25–5.5 V supplies on both sides and supports fail-safe default-high output mode for industrial motor control and isolated ADC interfaces.
For engineers reviewing the SI86S663BB-IU datasheet, SI86S663BB-IU pinout, SI86S663BB-IU application, or SI86S663BB-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 battery management systems and traction inverters.
Technical Context
The SI86S663BB-IU implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity up to 100 kV/µs CMTI. Its dual-supply architecture (VDD1/VDD2) supports independent 2.25–5.5 V operation per side with undervoltage lockout (UVLO) thresholds at 2.10–2.25 V (rising) and 1.98–2.12 V (falling).
It features tri-state outputs controlled by EN1/EN2 pins, Schmitt-trigger + CMOS input thresholds for high noise rejection, and selectable fail-safe output state (default-high per -BB suffix). The device includes internal 100 kΩ weak pulldown during unpowered states and supports sleep mode via external control only in SM-series variants-not applicable to SI86S663BB-IU.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and digital power control loops. |
| Propagation Delay | 10 ns typical - enables tight timing budgets in real-time motor control and fast ADC sampling systems. |
| Isolation Rating | 6000 VRMS for 1 minute - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for industrial safety-critical designs. |
| 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 °C 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. |
| AEC-Q100 Grade | Qualified to Grade 1 - certified for automotive applications including onboard chargers and battery management systems. |
Pinout & Package
SI86S663BB-IU is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS reinforced isolation. Pin numbering follows standard SOIC-16 layout with isolation barrier separating Side A (pins 1–8) and Side B (pins 9–16).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides independent 2.25–5.5 V bias for input-side logic; requires 0.1 µF + 10 µF bypass capacitors. |
| A1–A6 | Side A digital I/O | Six unidirectional or bidirectional channels (configurable per system design); CMOS/Schmitt inputs. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low; no sleep mode activation. |
| VDD2, GND2 | Side B power supply | Independent 2.25–5.5 V bias for output-side logic; electrically isolated from VDD1/GND1. |
| B1–B6 | Side B digital I/O | Six corresponding isolated output channels; output state follows A-side with fail-safe default-high behavior. |
| EN2 | Side B output enable | Active-high control: places all B-side outputs in high-impedance; enables safe hot-swap or power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF-modulated architecture eliminates boot delay - outputs become valid within 0.3 ms of VDD stabilization. |
| Reinforced IEC 60747-17 rating | Validated barrier integrity for functional safety systems requiring dual insulation - accepted by UL, VDE, CSA, CQC. |
| Selectable fail-safe output | -BB suffix denotes default-high output during VDD1 loss while VDD2 remains powered - critical for safe shutdown in BMS. |
| High electromagnetic immunity | 100 kV/µs common-mode transient immunity - maintains signal integrity in noisy inverter gate-drive environments. |
| Tri-state output control | Dedicated EN1/EN2 pins allow synchronized high-Z state on either side - simplifies bus arbitration and power sequencing. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating PWM gate signals and feedback from MCU to 3-phase inverter drivers in servo drives. IC Role / Device Role / Timing Role: Six-channel isolator transmits direction, enable, and current-sense signals across 6000 VRMS barrier with <10 ns skew. Use Value: Enables compact, high-reliability drive design meeting IEC 61800-5-1 reinforced insulation requirements without optocoupler latency. |
Use Scenario: Isolating cell voltage monitoring and balancing commands between battery pack controller and slave ICs. IC Role / Device Role / Timing Role: Provides six independent isolated data paths for daisy-chained BMS communication with fail-safe default-high signaling. Use Value: Guarantees safe open-circuit reporting during MCU reset or supply fault - prevents false balancing activation. |
| Isolated Switch-Mode Power Supply | Traction Inverter Control |
|
Use Scenario: Isolating feedback signals (voltage/current) and PWM commands between primary-side controller and secondary-side sensing. IC Role / Device Role / Timing Role: Transmits error amplifier output and synchronous rectifier control across reinforced barrier at 150 Mbps. Use Value: Supports ZVS/ZCS topologies requiring sub-10 ns timing precision and >100 kV/µs noise rejection in 1–3 kW PSUs. |
Use Scenario: Isolating high-speed torque command, phase current feedback, and fault signals between vehicle ECU and inverter module. IC Role / Device Role / Timing Role: Delivers six isolated channels for real-time control loop closure with AEC-Q100 Grade 1 qualification. Use Value: Meets ASIL-B functional safety requirements for EV drivetrain control with validated 6000 VRMS withstand capability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6603ARIZ-RL | 6-channel, 150 Mbps, 5000 VRMS, integrated isolated DC-DC converter; higher quiescent current (3.5 mA/channel). | Eliminates need for separate isolated power supply but occupies larger PCB area and adds switching noise. | Choose ADUM6603ARIZ-RL when isolated side power generation is required; SI86S663BB-IU when discrete isolated supplies already exist. |
| ISO6760FDWR | 6-channel, 50 Mbps, 5000 VRMS, lower CMTI (85 kV/µs), no AEC-Q100 qualification; SOIC-16 NB package. | Limited to non-automotive industrial use due to lower speed, isolation, and transient immunity specs. | Choose ISO6760FDWR for cost-sensitive, non-safety-critical 50 Mbps applications; SI86S663BB-IU for 150 Mbps, 6000 VRMS, and automotive-grade reliability. |
Compared with ADUM6603ARIZ-RL and ISO6760FDWR, SI86S663BB-IU uniquely combines 150 Mbps speed, 6000 VRMS reinforced isolation, AEC-Q100 Grade 1 qualification, and fail-safe default-high output-making it optimal for high-performance automotive and industrial isolation where timing, safety, and noise immunity are co-constrained.
Availability
SI86S663BB-IU is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, and isolated switch-mode power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SI86S663BB-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 engineered for high-reliability isolation in safety-critical automotive and industrial systems-delivering RF-based performance, reinforced certification, and fail-safe operation without optical degradation.
FAQ
What is the isolation rating and safety certification status of SI86S663BB-IU?
SI86S663BB-IU is rated for 6000 VRMS isolation per UL 1577 for 1 minute and carries reinforced insulation certification per IEC 60747-17. It is also compliant with CSA 62368-1 and 60601-1, VDE 60747-17, and CQC GB4943.1. These certifications are fully documented in Skyworks' official safety reports and apply directly to the SI86S663BB-IU part number in WB SOIC-16 packaging.
Does SI86S663BB-IU support fail-safe output behavior, and how is it configured?
Yes, SI86S663BB-IU implements fail-safe output behavior with default-high state during VDD1 loss while VDD2 remains powered. This is fixed by the -BB ordering option and does not require external configuration. The behavior is validated in Table 4 of the datasheet and ensures safe signal assertion in battery management and motor control fault conditions.
What are the supply voltage requirements and bypass capacitor recommendations for SI86S663BB-IU?
SI86S663BB-IU requires 2.25–5.5 V on both VDD1 and VDD2, with independent ground connections (GND1, GND2). Each supply must be decoupled with a 0.1 µF ceramic capacitor placed adjacent to the pin and a 10 µF bulk capacitor nearby. These values are specified in Section 3.2.1 of the datasheet and are mandatory for stable RF-modulated operation.
Is SI86S663BB-IU compatible with SPI or QSPI interfaces?
SI86S663BB-IU is a general-purpose 6-channel digital isolator-not a dedicated SPI or QSPI isolator. It can isolate SPI signals (e.g., MOSI/MISO/CLK/CS) using discrete channels, but lacks built-in SPI protocol logic, direction control, or buffered MISO like the Si86SSx or Si86SQx families. For SPI-specific needs, SI86SS51 or SI86SQ44 would be more appropriate alternatives.
What is the maximum data rate and propagation delay specification for SI86S663BB-IU?
SI86S663BB-IU supports DC to 150 Mbps data rate with 10 ns typical propagation delay and ≤3.5 ns pulse width distortion. These values are measured under standard conditions (VDD = 5.0 V, TA = 25 °C) and are guaranteed across the full operating temperature range (–40 °C to +125 °C) per Table 11 in the datasheet.
SI86S663BB-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:
- 6
- Inputs - Side 1/Side 2:
- 3/3
- 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
SI86S663BB-IU FAQ
1.How can I place an order for SI86S663BB-IU through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S663BB-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 SI86S663BB-IU reliable?
The price and inventory of SI86S663BB-IU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S663BB-IU is usually 5 days.
3.What payment methods are accepted for SI86S663BB-IU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S663BB-IU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S663BB-IU?
SI86S663BB-IU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S663BB-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 SI86S663BB-IU?
For technical support, including SI86S663BB-IU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S663BB-IU requirements.
6.How does Aetrix verify that SI86S663BB-IU is sourced from the original manufacturer or authorized distributors?
All SI86S663BB-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 SI86S663BB-IU meets industry standards.
7.What is the process for return or replacement of SI86S663BB-IU?
All SI86S663BB-IU units undergo pre-shipment inspection (PSI). If there is an issue with SI86S663BB-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 SI86S663BB-IU part is unused and in its original packaging.
Return procedure for SI86S663BB-IU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S663BB-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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