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Skyworks Solutions Inc. SI8663BB-AS1R
- Part No.:
- SI8663BB-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8663BB-AS1R.pdf
- Description:
- AUTOMOTIVE 2.5 KV 3 FORWARD & 3
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
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Product details
Overview
SI8663BB-AS1R from Skyworks is a six-channel digital isolator with 3 input channels on VDD1 side and 3 on VDD2 side, supporting up to 150 Mbps data rate, <10 ns propagation delay, and 2.5 kVRMS isolation in a narrow-body SOIC-16 package. It operates from 2.5–5.5 V, features Schmitt-trigger inputs, selectable fail-safe low-default output, and is qualified for automotive applications per AEC-Q100.
For engineers reviewing the SI8663BB-AS1R datasheet, SI8663BB-AS1R pinout, SI8663BB-AS1R application, or SI8663BB-AS1R equivalent, this page delivers verified electrical specs, automotive-grade timing performance, isolation safety certifications (UL, VDE, CQC), and real-world design context for motor control, battery management, and isolated power systems.
Technical Context
The SI8663BB-AS1R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its dual-supply architecture supports independent 2.5–5.5 V operation on both sides with separate undervoltage lockout (UVLO) monitors per side.
Each of its six bidirectional-capable channels uses Schmitt-trigger inputs (VT+ = 1.67 V typ, VT– = 1.23 V typ) and delivers 50 Ω nominal output impedance. The device achieves 0.5 ns typical channel-to-channel skew and 35 kV/µs minimum common-mode transient immunity (CMTI), meeting reinforced insulation requirements per IEC 60950-1 and IEC 62368-1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 150 Mbps - enables high-speed serial interfaces (e.g., SPI, RS-485, CAN FD) without signal degradation |
| Propagation Delay | 8.0 ns typical - ensures tight timing alignment in real-time control loops (e.g., motor gate drivers) |
| Channel-Channel Skew | 0.5 ns typical - critical for synchronized sampling across multiple ADC/DAC channels |
| Isolation Rating | 2.5 kVRMS - certified to UL 1577, VDE 0884-10, and CQC GB4943.1 for reinforced insulation |
| Supply Voltage Range | 2.5–5.5 V per side - supports interoperability with 3.3 V microcontrollers and 5 V legacy peripherals |
| Fail-Safe Default | Low output on VDD1 loss - prevents unintended activation in power-loss scenarios (e.g., BMS shutdown) |
| AEC-Q100 Grade | Qualified to Grade 1 (–40°C to +125°C) - validated for automotive traction inverters and on-board chargers |
Pinout & Package
Narrow-body SOIC-16 (NB SOIC-16) package with 8.3 mm creepage and 8.0 mm clearance; RoHS-compliant, JEDEC-standard 260 °C peak reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | VDD1-side I/O (3 inputs, 3 outputs) | Side A interface pins; support 2.5–5.5 V logic; Schmitt-trigger inputs ensure noise margin >400 mV |
| 7, 8 | GND1 | Input-side ground reference; must be decoupled with 0.1 µF capacitor near pin |
| 9, 10, 11, 12, 13, 14 | VDD2-side I/O (3 inputs, 3 outputs) | Side B interface pins; electrically isolated from VDD1 side; enable galvanic separation of domains |
| 15, 16 | GND2 | Output-side ground reference; requires separate PCB plane from GND1 to maintain isolation integrity |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift; enables 60-year lifetime at rated working voltage |
| Selectably fail-safe output | Factory-configured low-default state ensures safe deactivation during VDD1 brownout (e.g., MCU reset) |
| Ultra-low power at 100 Mbps | 16.4 mA per side at 5 V - reduces thermal load in dense automotive ECUs vs. optocoupler alternatives |
| High CMTI immunity | 50 kV/µs min - suppresses false triggering in noisy motor drive environments with fast-switching SiC/GaN FETs |
| Automotive qualification | AEC-Q100 Grade 1 + AIAG PPAP documentation - meets OEM requirements for battery management and OBC designs |
Applications
| Motor Control Systems | Battery Management Systems (BMS) |
|---|---|
|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Six-channel isolator provides independent, low-skew paths for three upper/lower gate signals plus two analog sense lines. Use Value: 0.5 ns channel-channel skew and 8 ns propagation delay enable precise PWM dead-time control, reducing shoot-through risk in SiC inverters. |
Use Scenario: Galvanically separating cell monitoring ICs from main MCU in high-voltage EV battery packs. IC Role / Device Role / Timing Role: Transfers isolated UART/SPI commands and voltage/temperature telemetry across 400–800 V barriers. Use Value: 2.5 kVRMS reinforced insulation and AEC-Q100 qualification ensure functional safety compliance (ISO 26262 ASIL-C). |
| On-Board Chargers (OBC) | Industrial Isolated Power Supplies |
|
Use Scenario: Signal isolation between AC/DC PFC controller and DC/DC LLC secondary-side controller. IC Role / Device Role / Timing Role: Carries feedback signals (voltage, current, fault flags) across isolation barrier while maintaining tight regulation loop timing. Use Value: 150 Mbps capability supports high-frequency digital control protocols (e.g., PMBus), improving dynamic response under load transients. |
Use Scenario: Isolating digital control signals in medical-grade isolated DC-DC converters. IC Role / Device Role / Timing Role: Replaces optocouplers in feedback path and enable/disable sequencing for dual-output isolated supplies. Use Value: Sub-10 ns propagation delay and 35 kV/µs CMTI meet IEC 60601-1 creepage/clearance and EMI immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8663BB-IS1R | Industrial-grade (–I suffix); identical electrical specs and pinout but lacks AEC-Q100 qualification and PPAP documentation | Suitable for non-automotive industrial automation where automotive reliability validation is not required | Choose SI8663BB-IS1R for cost-sensitive industrial designs without automotive certification mandates |
| ADUM6603ARWZ | 6-channel, 2.5 kV rms, 150 Mbps, but uses iCoupler magnetic isolation; higher supply current (22 mA @ 100 Mbps, 5 V) | Valid for medical/industrial use; lacks AEC-Q100 and automotive PPAP support | Prefer SI8663BB-AS1R when automotive qualification, lower power, or higher CMTI (50 vs. 35 kV/µs) is critical |
Compared with SI8663BB-IS1R and ADUM6603ARWZ, the SI8663BB-AS1R uniquely combines automotive qualification, 16.4 mA supply current at 100 Mbps, and 50 kV/µs CMTI-making it optimal for high-reliability EV power electronics where safety certification and noise resilience are non-negotiable.
Availability
SI8663BB-AS1R is available at Aetrix Electronics and suitable for automotive battery management systems, on-board chargers, and industrial motor drives requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SI8663BB-AS1R 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 SI8663BB-AS1R belongs to Skyworks' Si866x family of ultra-low-power digital isolators, engineered specifically for automotive and industrial applications demanding high-speed, low-latency, and safety-certified galvanic isolation.
FAQ
What is the isolation rating and safety certification status of SI8663BB-AS1R?
The SI8663BB-AS1R is rated for 2.5 kVRMS isolation and certified to UL 1577, VDE 0884-10, CSA Component Notice 5A, and CQC GB4943.1 standards. It meets reinforced insulation requirements per IEC 60950-1 and IEC 62368-1, making it suitable for automotive and medical applications where regulatory compliance is mandatory. SI8663BB-AS1R maintains these ratings across its full –40°C to +125°C operating range.
Does SI8663BB-AS1R support bidirectional communication on all six channels?
SI8663BB-AS1R has fixed channel directionality: three channels are unidirectional from VDD1 to VDD2, and three from VDD2 to VDD1 - it does not support dynamic bidirectional mode per channel. However, the 3+3 configuration enables full-duplex system-level communication (e.g., command + status feedback). SI8663BB-AS1R's pin assignments reflect this asymmetric I/O split, with no software or hardware reconfiguration required.
What is the default output behavior of SI8663BB-AS1R during power loss on the input side?
The SI8663BB-AS1R is configured with a factory-selectable fail-safe mode; the "BB" ordering code indicates a low-default output state when VDD1 is unpowered and VDD2 remains active. This ensures downstream circuitry (e.g., gate drivers or safety relays) defaults to a safe, de-energized condition during MCU brownout or reset events. SI8663BB-AS1R implements this via internal pull-downs on VDD1-side inputs and outputs.
How does SI8663BB-AS1R compare to optocouplers in terms of propagation delay and lifetime?
SI8663BB-AS1R delivers 8 ns typical propagation delay - over 10× faster than standard optocouplers (typically >100 ns) - enabling high-frequency control loops. Its RF-based semiconductor isolation barrier guarantees 60-year operational life at rated voltage, eliminating LED degradation and temperature-dependent parameter drift inherent in optocouplers. SI8663BB-AS1R also avoids start-up initialization delays, achieving valid output within 40 µs of power application.
Can SI8663BB-AS1R operate with mismatched supply voltages on VDD1 and VDD2 sides?
Yes, SI8663BB-AS1R supports independent 2.5–5.5 V operation on VDD1 and VDD2 - for example, 3.3 V on the MCU side (VDD1) and 5 V on the actuator side (VDD2). Each side has its own UVLO monitor (VDDUV+ = 2.24 V typ), ensuring reliable startup and shutdown behavior regardless of supply sequencing. SI8663BB-AS1R maintains full 150 Mbps data rate and timing specs across all valid voltage combinations within this range.
SI8663BB-AS1R 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:
- Yes
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 3/3
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 4.5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.375V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8663BB-AS1R FAQ
1.How can I place an order for SI8663BB-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8663BB-AS1R 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 SI8663BB-AS1R reliable?
The price and inventory of SI8663BB-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8663BB-AS1R is usually 5 days.
3.What payment methods are accepted for SI8663BB-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8663BB-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8663BB-AS1R?
SI8663BB-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8663BB-AS1R 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 SI8663BB-AS1R?
For technical support, including SI8663BB-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8663BB-AS1R requirements.
6.How does Aetrix verify that SI8663BB-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8663BB-AS1R 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 SI8663BB-AS1R meets industry standards.
7.What is the process for return or replacement of SI8663BB-AS1R?
All SI8663BB-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8663BB-AS1R, 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 SI8663BB-AS1R part is unused and in its original packaging.
Return procedure for SI8663BB-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8663BB-AS1R Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
Texas Instruments
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