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Skyworks Solutions Inc. SI8663ED-ASR
- Part No.:
- SI8663ED-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8663ED-ASR.pdf
- Description:
- AUTOMOTIVE 5 KV 3 FORWARD & 3 RE
- Quantity:
- Payment:
- Shipping:
Inventory:1,242
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Product details
Overview
SI8663ED-ASR from Skyworks is a six-channel, ultra-low-power digital isolator with 3 input channels on VDD1 side and 3 output channels on VDD2 side, 5 kVRMS reinforced isolation rating, 150 Mbps data rate, and selectable high-default fail-safe mode. It operates across –40 to 125 °C and supports 2.5–5.5 V dual supplies, enabling robust signal isolation in high-noise industrial motor drives and battery management systems.
For engineers reviewing the SI8663ED-ASR datasheet, SI8663ED-ASR pinout, SI8663ED-ASR application, or SI8663ED-ASR equivalent, this page delivers verified electrical specs, SOIC-16 wide-body package details, fail-safe behavior under undervoltage, CMTI of 50 kV/µs, and automotive-grade AEC-Q100 qualification - all critical for isolated gate driver interfaces and high-reliability power conversion designs.
Technical Context
The SI8663ED-ASR implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and providing inherent noise immunity without optical components. Its architecture delivers sub-10 ns propagation delay with <0.5 ns channel-channel skew and <2 ns propagation delay skew between units.
It features independent undervoltage lockout (UVLO) on both sides (VDD1/VDD2), Schmitt-trigger inputs with 0.44 V typical hysteresis, and fail-safe logic that holds outputs high when VDD1 is unpowered - a factory-configured ordering option confirmed for this part number.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels & Direction | 3 input / 3 output channels; enables bidirectional signal isolation across split supply domains |
| Isolation Rating | 5 kVRMS reinforced insulation (UL, VDE, CSA, CQC certified); supports functional safety in >1000 V systems |
| Max Data Rate | 150 Mbps; sustains clean eye diagrams at full speed with 350 ps peak jitter |
| Propagation Delay | 8.0 ns typical (5–13 ns max); ensures tight timing control in real-time motor control loops |
| CMTI | 50 kV/µs minimum; prevents false triggering during fast transients in inverters and SMPS |
| Supply Range | 2.5–5.5 V per side; allows interoperability with 3.3 V controllers and 5 V I/O while maintaining low power |
| Fail-Safe Default | High-output state when VDD1 is unpowered; eliminates floating states in fault conditions |
Pinout & Package
SI8663ED-ASR is housed in a RoHS-compliant 16-pin wide-body SOIC package (WB SOIC-16) with 8.3 mm creepage and 8.0 mm clearance, supporting reinforced insulation up to 5 kVRMS. Pin assignments are symmetrically split across isolation barrier: Pins 1–8 serve VDD1/GND1/input side; Pins 9–16 serve VDD2/GND2/output side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | VDD1, GND1, IN1–IN3 | VDD1 powers input-side circuitry; GND1 is isolated reference; IN1–IN3 accept 2.0–5.5 V logic signals with Schmitt trigger thresholds |
| 7, 8 | GND1, VDD1 | Dual ground and supply pins reduce impedance and improve noise rejection on input side |
| 9, 10, 11, 12, 13, 14 | OUT1–OUT3, GND2, VDD2 | OUT1–OUT3 drive 50 Ω loads with VOH ≥ VDD2–0.4 V and VOL ≤ 0.4 V; VDD2/GND2 form isolated output domain |
| 15, 16 | VDD2, GND2 | Dedicated supply/ground pair for output side ensures stable level-shifting and minimizes cross-talk |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift; achieves 60-year life at rated working voltage |
| Selectable fail-safe mode | Factory-set high-default output ensures defined state during input-side power loss - no external pull-ups needed |
| Ultra-low power at 100 Mbps | 16.4 mA per side at 5 V (32.8 mA total); reduces thermal load in dense PCB layouts |
| Precision timing | 0.5 ns channel-channel skew and 2 ns propagation delay skew enable synchronized multi-channel sampling |
| AEC-Q100 qualified | Rated for automotive applications including battery management and on-board chargers - zero-defect manufacturing flow |
Applications
| Motor Control Systems | Isolated Power Supplies |
|---|---|
Use Scenario: Isolating PWM signals between MCU and gate drivers in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Six-channel isolator transmitting three complementary PWM pairs with matched propagation delay. Use Value: 0.5 ns channel-channel skew preserves dead-time integrity; 50 kV/µs CMTI prevents shoot-through during dV/dt events. |
Use Scenario: Feedback isolation in secondary-side regulation of isolated DC-DC converters. IC Role / Device Role / Timing Role: Transmitting error amplifier output and synchronous rectifier control across isolation barrier. Use Value: 150 Mbps capability supports high-frequency switching (>1 MHz); 5 kVRMS rating meets reinforced insulation requirements per IEC 62368-1. |
| Battery Management Systems | Industrial PLC I/O Modules |
Use Scenario: Isolating cell voltage monitoring and pack contactor control signals in EV battery packs. IC Role / Device Role / Timing Role: Providing galvanic separation between high-voltage battery stack and 3.3 V microcontroller domain. Use Value: AEC-Q100 qualification ensures reliability over lifetime; –40 to 125 °C operation covers under-hood thermal range. |
Use Scenario: Digital input/output isolation in modular PLC backplanes handling 24 V field signals. IC Role / Device Role / Timing Role: Converting and isolating discrete sensor/actuator signals across safety barriers. Use Value: Schmitt-trigger inputs reject EMI in factory-floor environments; 2.5–5.5 V supply flexibility supports legacy and modern I/O standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6630ARIZ-RL | Integrated isolated DC-DC converter (500 mW); 50 Mbps max data rate; 3.75 kVRMS isolation | Suitable where auxiliary power is needed on isolated side; lower bandwidth limits high-speed feedback use | Choose ADUM6630ARIZ-RL only if isolated power rail generation is required - SI8663ED-ASR requires external isolated supplies |
| ISO6763RWER | 6-channel, 50 Mbps, 5 kVRMS; 2.25–5.5 V supply; no fail-safe default selection; 10 ns propagation delay typical | Lacks configurable fail-safe output; higher propagation delay impacts timing-critical control loops | ISO6763RWER fits cost-sensitive industrial applications without fail-safe requirement; SI8663ED-ASR preferred for automotive BMS where defined default state is mandatory |
Compared with ADUM6630ARIZ-RL and ISO6763RWER, SI8663ED-ASR uniquely combines 150 Mbps speed, factory-set high-fail-safe mode, and AEC-Q100 qualification - making it optimal for high-bandwidth, safety-critical automotive and industrial isolation where deterministic output behavior during faults is non-negotiable.
Availability
SI8663ED-ASR is available at Aetrix Electronics and suitable for industrial motor control, battery management systems, and isolated power supply designs requiring stable component supply, long-term lifecycle support, and automotive-grade reliability.
Supply support for SI8663ED-ASR 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 Si866x family was engineered to replace optocouplers in demanding applications, delivering superior speed, longevity, and noise immunity through RF-based CMOS isolation - with SI8663ED-ASR targeting automotive and industrial systems needing 5 kVRMS reinforced insulation and fail-safe assurance.
FAQ
What is the isolation rating and certification status of SI8663ED-ASR?
SI8663ED-ASR provides 5 kVRMS reinforced isolation and is certified to UL 1577, VDE 0884-10, CSA 5A, and CQC GB4943.1 standards. These approvals validate its suitability for safety-critical applications including medical equipment and electric vehicle battery systems where reinforced insulation is mandated by IEC 62368-1 and IEC 60601-1.
Does SI8663ED-ASR require external bypass capacitors?
Yes, SI8663ED-ASR requires a 0.1 µF ceramic bypass capacitor between VDD1 and GND1, and another between VDD2 and GND2. These must be placed as close as possible to the respective supply pins to suppress high-frequency noise and ensure stable operation - a requirement explicitly specified in the Skyworks datasheet Section 3.3.1.
How does the fail-safe mode operate in SI8663ED-ASR?
SI8663ED-ASR is configured at manufacture for high-default fail-safe operation: when VDD1 is unpowered but VDD2 remains active, all three outputs (OUT1–OUT3) are driven high. This behavior is confirmed in Table 3.1 and Ordering Guide - distinct from low-default variants like SI8663BD-AS - and eliminates need for external pull-up resistors.
What is the maximum ambient temperature for continuous operation of SI8663ED-ASR?
SI8663ED-ASR operates continuously from –40 to 125 °C ambient temperature. This range is guaranteed across full data rates and supply voltages per Table 4.1, and aligns with AEC-Q100 Grade 1 requirements - enabling deployment in engine compartments, traction inverters, and industrial enclosures without derating.
Can SI8663ED-ASR interface directly with 1.8 V logic?
No, SI8663ED-ASR does not support 1.8 V logic levels. Its input thresholds (VT+ = 1.4–1.9 V, VT– = 1.0–1.4 V) and VIH minimum of 2.0 V require minimum 2.5 V supply on each side. For 1.8 V systems, level-shifting circuitry or a different isolator such as Si86xx with 1.8 V compatible inputs must be used - SI8663ED-ASR is specified for 2.5–5.5 V operation only.
SI8663ED-ASR 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:
- Yes
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 3/3
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- 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
SI8663ED-ASR FAQ
1.How can I place an order for SI8663ED-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8663ED-ASR 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 SI8663ED-ASR reliable?
The price and inventory of SI8663ED-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8663ED-ASR is usually 5 days.
3.What payment methods are accepted for SI8663ED-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8663ED-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8663ED-ASR?
SI8663ED-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8663ED-ASR 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 SI8663ED-ASR?
For technical support, including SI8663ED-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8663ED-ASR requirements.
6.How does Aetrix verify that SI8663ED-ASR is sourced from the original manufacturer or authorized distributors?
All SI8663ED-ASR 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 SI8663ED-ASR meets industry standards.
7.What is the process for return or replacement of SI8663ED-ASR?
All SI8663ED-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8663ED-ASR, 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 SI8663ED-ASR part is unused and in its original packaging.
Return procedure for SI8663ED-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8663ED-ASR 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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