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Skyworks Solutions Inc. SI8663ED-B-ISR
- Part No.:
- SI8663ED-B-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8663ED-B-ISR.pdf
- Description:
- DGTL ISO 5000VRMS 6CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,359
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Product details
Overview
SI8663ED-B-ISR from Skyworks is a six-channel digital isolator with 3 input channels on VDD1 side and 3 output channels on VDD2 side, rated for 5 kVRMS reinforced isolation in wide-body SOIC-16 package. It supports DC–150 Mbps data rates, achieves ≤8 ns typical propagation delay, 0.5 ns channel-channel skew, and operates from 2.5–5.5 V supplies across –40 to 125 °C - deployed in battery management systems and traction inverters requiring high CMTI and fail-safe default-high outputs.
For engineers reviewing the SI8663ED-B-ISR datasheet, SI8663ED-B-ISR pinout, SI8663ED-B-ISR application, or SI8663ED-B-ISR equivalent, this page delivers verified specifications including 5 kVRMS isolation rating, selectable fail-safe high default state, 50 kV/µs common-mode transient immunity, and SOIC-16 wide-body package compatibility for reinforced insulation designs in automotive and industrial power systems.
Technical Context
The SI8663ED-B-ISR 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 (VDD1/VDD2) supports independent 2.5–5.5 V operation per side with Schmitt-trigger inputs and undervoltage lockout monitoring on both sides.
It features a selectable fail-safe mode where unpowered input side results in logic-high outputs when VDD2 is active - implemented via internal pull-ups on all six channels. Timing performance is stabilized across temperature with <2.5 ns pulse width distortion and ≤4.5 ns propagation delay skew between units.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5 kVRMS reinforced insulation - enables use in primary-side/secondary-side barriers of EV traction inverters and OBCs meeting IEC 62368-1 and IEC 60601-1. |
| Max Data Rate | 150 Mbps - supports high-speed SPI, RS-485, and digital PWM feedback in motor control and isolated ADC interfaces. |
| Propagation Delay | 5–13 ns (min–max), 8 ns typical - ensures sub-10 ns timing alignment critical for gate driver control loops and real-time protection circuits. |
| Channel Configuration | 3 inputs / 3 outputs - matches asymmetric signal routing needs in BMS cell monitoring and inverter phase-leg control. |
| Fail-Safe Default | Logic-high output during VDD1 loss - prevents unintended gate turn-on in power stage drivers when controller supply fails. |
| CMTI | 50 kV/µs typical - maintains signal integrity under fast dv/dt transients in 800-V battery systems and SiC-based inverters. |
| Supply Range | 2.5–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level-shifting. |
Pinout & Package
SI8663ED-B-ISR uses a 16-pin wide-body SOIC package (WB SOIC-16) with 8.0 mm creepage and clearance, certified for reinforced insulation up to 5 kVRMS. Pin numbering follows standard SOIC convention with pins 1–8 on one side and 9–16 on the other, straddling the isolation barrier.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | Power for 3 input channels and transmitter circuitry; requires 0.1 µF bypass capacitor to GND1. |
| GND1 | Input-side ground | Reference return for VDD1 and all input signals; must be separated from GND2 by isolation barrier. |
| INA1–INA3 | Input channels A1–A3 | 3 digital inputs referenced to VDD1/GND1; Schmitt-triggered for >0.44 V hysteresis and noise rejection. |
| VDD2 | Output-side supply | Power for 3 output drivers and receiver; independent of VDD1, enabling level-shifting applications. |
| GND2 | Output-side ground | Reference return for VDD2 and all output signals; galvanically isolated from GND1. |
| OUTB1–OUTB3 | Output channels B1–B3 | 3 logic outputs referenced to VDD2/GND2; default-high during VDD1 loss; 50 Ω nominal output impedance. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift; enables 60-year lifetime at rated working voltage with no startup initialization. |
| Selectable fail-safe output | Factory-configured logic-high default ensures safe shutdown of downstream power stages during controller supply loss. |
| Ultra-low power at 100 Mbps | 16.4 mA per side at 5 V (typical), reducing thermal load in densely packed BMS modules and OBC control boards. |
| High CMTI and timing precision | 50 kV/µs common-mode immunity plus 0.5 ns channel-channel skew enables reliable operation in noisy 800-V SiC inverter environments. |
| AEC-Q100 qualified | Qualified to Grade 0 (–40 to +150 °C junction) for automotive use - supports deployment in traction inverters and battery packs. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage measurement and balancing signals between high-voltage battery stack and low-voltage MCU. IC Role / Device Role / Timing Role: Six-channel isolator transmitting 3 analog monitor enable signals and 3 status returns across 5 kVRMS barrier with <10 ns timing alignment. Use Value: Enables precise, simultaneous sampling of up to 96 cells using daisy-chained monitors while maintaining functional safety compliance. |
Use Scenario: Transmitting PWM gate drive signals and fault feedback between inverter MCU and isolated gate drivers in 800-V EV platforms. IC Role / Device Role / Timing Role: Providing 3 isolated PWM inputs and 3 fault/status returns with 50 kV/µs CMTI to withstand SiC switching transients. Use Value: Prevents false triggering during 100+ V/ns dv/dt events, ensuring reliable short-circuit protection response within 2 µs. |
| On-Board Charger (OBC) | Industrial Isolated ADC Interface |
|
Use Scenario: Isolating digital control signals between AC/DC and DC/DC stages in bidirectional OBCs with unified MCU architecture. IC Role / Device Role / Timing Role: Routing 3 control commands (e.g., soft-start, phase-shift, enable) and 3 status flags (e.g., overtemp, OVLO, ready) across isolation boundary. Use Value: Supports single-controller architecture with deterministic latency, reducing BOM count and system-level certification effort. |
Use Scenario: Interfacing isolated sigma-delta ADCs (e.g., AMC1306) to host processor in motor drive current sensing. IC Role / Device Role / Timing Role: Transmitting 3-bit serial data stream and 2 clock/control lines across reinforced barrier with sub-5 ns skew. Use Value: Maintains 16-bit effective resolution by preserving timing integrity of oversampled bitstream under EMI stress. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6633ARZ | 3/3-channel, 5 kVRMS, 150 Mbps, but uses iCoupler magnetic isolation; higher 22 mA @ 100 Mbps; SOIC-16 narrow body (3.9 mm width). | Lacks AEC-Q100 qualification; not approved for automotive traction systems; narrower creepage limits its use in 800-V designs. | Prefer SI8663ED-B-ISR for automotive-grade reliability and reinforced insulation margin in high-voltage EV subsystems. |
| ISO6763RQWR | 3/3-channel, 5 kVRMS, 100 Mbps max, capacitive isolation; 12.5 mA @ 100 Mbps; SOIC-16 wide body; AEC-Q100 Grade 1 (–40 to +125 °C). | Lower data rate limits SPI-based sensor interfaces; lacks 50 kV/µs CMTI - measured at 35 kV/µs typical. | Choose SI8663ED-B-ISR when 150 Mbps and 50 kV/µs CMTI are required for high-fidelity gate driver signaling in SiC systems. |
Compared with ADUM6633ARZ and ISO6763RQWR, SI8663ED-B-ISR delivers superior CMTI, automotive-grade temperature range (–40 to +125 °C ambient), and RF-based isolation stability over lifetime - making it optimal for safety-critical EV powertrain applications where timing predictability and long-term reliability are non-negotiable.
Availability
SI8663ED-B-ISR is available at Aetrix Electronics and suitable for battery management systems, traction inverters, on-board chargers, and isolated ADC interfaces requiring stable component supply across automotive and industrial production cycles.
Supply support for SI8663ED-B-ISR 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 for wireless, automotive, and industrial markets.
The Si866x family was designed specifically for high-reliability, high-CMTI digital isolation in automotive electrification and industrial power systems - emphasizing 60-year lifetime, AEC-Q100 qualification, and reinforced insulation up to 5 kVRMS.
FAQ
What is the isolation rating and certification status of SI8663ED-B-ISR?
SI8663ED-B-ISR is rated for 5 kVRMS reinforced isolation and certified to UL 1577, VDE 0884-10, CSA 5A, and CQC GB4943.1 standards. It meets IEC 62368-1 and IEC 60601-1 requirements for reinforced insulation, validated for continuous operation in 800-V battery systems. The SI8663ED-B-ISR wide-body SOIC package provides 8.0 mm creepage distance essential for automotive safety compliance.
Does SI8663ED-B-ISR support fail-safe operation, and how is it configured?
Yes, SI8663ED-B-ISR has factory-configured fail-safe logic-high default outputs when VDD1 is unpowered but VDD2 remains active. This behavior is implemented via internal pull-up resistors on all six channels and is fixed per ordering code - "ED" denotes default-high configuration. The SI8663ED-B-ISR does not support runtime reconfiguration; selection is made at order time.
What are the supply voltage and temperature ranges supported by SI8663ED-B-ISR?
SI8663ED-B-ISR operates from 2.5 V to 5.5 V on both VDD1 and VDD2 supplies, with full functionality across –40 °C to +125 °C ambient temperature. It is AEC-Q100 qualified to Grade 0 (junction temperature up to +150 °C), making it suitable for under-hood and power module applications. The SI8663ED-B-ISR maintains timing specs and CMTI performance across this full range without derating.
How does SI8663ED-B-ISR achieve high noise immunity in electric vehicle systems?
SI8663ED-B-ISR achieves 50 kV/µs typical common-mode transient immunity (CMTI) through RF-based modulation and differential receiver design, rejecting fast dv/dt noise from SiC/GaN switches. Its Schmitt-trigger inputs provide 0.44 V hysteresis, and the 0.5 ns channel-channel skew ensures synchronized signal transfer critical for three-phase motor control. The SI8663ED-B-ISR's immunity is validated under 1500 V CM transients per IEC 60747-17.
Is SI8663ED-B-ISR pin-compatible with other members of the Si866x family?
SI8663ED-B-ISR shares identical pinout and package (WB SOIC-16) with all Si866x variants having the same channel count and package type - including SI8663BB-B-IS, SI8663BC-B-IS1, and SI8663BD-B-IS. However, default output state (high vs. low) and isolation rating (2.5/3.75/5 kVRMS) differ by suffix; PCB layout is reusable across SI8663x wide-body variants, but firmware must match fail-safe logic polarity.
SI8663ED-B-ISR 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:
- No
- 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:
- 2.5V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8663ED-B-ISR FAQ
1.How can I place an order for SI8663ED-B-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8663ED-B-ISR 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-B-ISR reliable?
The price and inventory of SI8663ED-B-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8663ED-B-ISR is usually 5 days.
3.What payment methods are accepted for SI8663ED-B-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8663ED-B-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8663ED-B-ISR?
SI8663ED-B-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8663ED-B-ISR 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-B-ISR?
For technical support, including SI8663ED-B-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8663ED-B-ISR requirements.
6.How does Aetrix verify that SI8663ED-B-ISR is sourced from the original manufacturer or authorized distributors?
All SI8663ED-B-ISR 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-B-ISR meets industry standards.
7.What is the process for return or replacement of SI8663ED-B-ISR?
All SI8663ED-B-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8663ED-B-ISR, 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-B-ISR part is unused and in its original packaging.
Return procedure for SI8663ED-B-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8663ED-B-ISR 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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