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Skyworks Solutions Inc. SI8663EB-B-IUR
- Part No.:
- SI8663EB-B-IUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8663EB-B-IUR.pdf
- Description:
- DGTL ISO 2500VRMS 6CH GP 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,476
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Product details
Overview
SI8663EB-B-IUR from Skyworks is a six-channel digital isolator with 3 input channels on VDD1 side and 3 output channels on VDD2 side, supporting up to 150 Mbps data rate, <10 ns propagation delay, and 2.5 kVRMS isolation. It features selectable high-default fail-safe mode, Schmitt trigger inputs for noise immunity, and operates from 2.5–5.5 V supplies. It is used in isolated motor control feedback loops requiring precise timing and robust noise rejection.
For engineers reviewing the SI8663EB-B-IUR datasheet, SI8663EB-B-IUR pinout, SI8663EB-B-IUR application, or SI8663EB-B-IUR equivalent, this page delivers verified specifications, QSOP-16 package details, fail-safe behavior under power loss, and direct alternatives for industrial and automotive isolated communication interfaces.
Technical Context
The SI8663EB-B-IUR implements RF-based on/off keying across a semiconductor isolation barrier-no optical components or initialization required. Its dual-supply architecture (VDD1/VDD2) enables galvanic separation between controller and power stage domains, with independent undervoltage lockout (UVLO) on each side.
All six channels are unidirectional, with three inputs on Side A and three outputs on Side B. The high-default fail-safe mode ensures outputs drive logic high during VDD1 loss while VDD2 remains powered-critical for gate driver enable signals in traction inverters and battery management systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 150 Mbps - supports real-time PWM and serial interface isolation in high-speed motor drives |
| Propagation Delay | 5–13 ns - enables sub-microsecond timing-critical feedback in closed-loop power converters |
| Isolation Rating | 2.5 kVRMS - certified to UL 1577, CSA 5A, VDE 0884-10, and IEC 62368-1 for reinforced insulation |
| Supply Voltage Range | 2.5–5.5 V - interoperable with 3.3 V microcontrollers and 5 V gate drivers without level-shifting |
| Fail-Safe Default | High - maintains active-high enable state during input-side power loss, preventing unintended shutdown |
| Channel Configuration | 3 inputs / 3 outputs - matches asymmetric signal flow in isolated ADC sampling and PWM capture paths |
| CMTI | ≥50 kV/µs - rejects fast transients from IGBT/SiC switching noise in power inverters |
Pinout & Package
SI8663EB-B-IUR is housed in a RoHS-compliant QSOP-16 package (5.3 mm × 10.2 mm, 1.0 mm height), optimized for high-density PCB layouts with 0.635 mm pitch and 8 mm creepage distance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | VDD1 Power Supply | Input-side supply rail; bypass capacitor required at Pin 1 for stable operation |
| 4, 5, 6 | GND1 Reference | Input-side ground return; must be separated from GND2 by isolation barrier |
| 7, 8, 9 | IN1–IN3 Inputs | Logic-level inputs with Schmitt triggers; tolerate slow edges and EMI up to 50 kV/µs |
| 10, 11, 12 | OUT1–OUT3 Outputs | CMOS-compatible outputs with ~50 Ω impedance; require controlled-impedance routing above 50 Mbps |
| 13, 14, 15 | GND2 Reference | Output-side ground; forms isolated domain with VDD2 (Pin 16) |
| 16 | VDD2 Power Supply | Output-side supply; powers output drivers independently of VDD1 |
Key Features
| Feature | Design Value |
|---|---|
| RF-Based Isolation | Eliminates LED aging and temperature drift issues inherent in optocouplers; no start-up delay or calibration needed |
| Selectable Fail-Safe Mode | Factory-configured high-default output ensures safe state retention during input-side brownout or reset |
| Ultra-Low Power at 100 Mbps | 16.4 mA per side at 5 V - reduces thermal load in sealed enclosures and extends battery life in portable BMS |
| Precision Timing | 0.5 ns channel-to-channel skew and 1.5 ns pulse width distortion - preserves signal integrity in multi-phase PWM synchronization |
| AEC-Q100 Qualified | Rated for –40°C to +125°C operation with zero-defect manufacturing flow - suitable for OBC and traction inverter modules |
Applications
| Motor Control Feedback | Isolated ADC Interface |
|---|---|
Use Scenario: Isolating encoder signals and current-sense feedback from gate driver ICs in servo drives. IC Role / Device Role / Timing Role: Six-channel isolator providing synchronized, low-skew transmission of three PWM enable signals and three analog monitor outputs. Use Value: Enables real-time overcurrent protection with <10 ns latency and prevents ground loop-induced measurement errors in shunt-based current sensing. | Use Scenario: Connecting isolated sigma-delta modulators to MCU ADC inputs in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Transfers high-resolution 1-bit bitstream data across isolation barrier with deterministic timing and minimal jitter. Use Value: Maintains >85 dB SNR in isolated 24-bit ADC systems by limiting channel skew to 0.5 ns and CMTI to ≥50 kV/µs. |
| Battery Management System | Traction Inverter Control |
Use Scenario: Isolating cell voltage monitoring and pack contactor control signals in EV battery packs. IC Role / Device Role / Timing Role: Provides three isolated digital outputs for contactor enable/disable and three isolated inputs for fault reporting from analog front-end ICs. Use Value: Ensures fail-safe high-state outputs maintain contactor closure during transient VDD1 dropout, meeting ASIL-B functional safety requirements. | Use Scenario: Isolating gate drive signals and DESAT feedback between MCU and SiC half-bridge modules in electric vehicle traction inverters. IC Role / Device Role / Timing Role: Delivers matched-propagation-delay PWM signals to upper/lower gate drivers while returning fast DESAT fault pulses. Use Value: Achieves <2.5 ns channel skew and 5 ns minimum pulse width support - critical for dead-time control and short-circuit protection response. |
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 V only supply; integrated isolated DC-DC converter; 25 Mbps max data rate | Lacks high-speed capability for PWM isolation; suited for low-bandwidth sensor interfaces | Choose when board space is constrained and isolated power is needed, but not for >50 Mbps timing-critical paths |
| ISO6763DWR | 6-channel, 50 Mbps, 3.75 kVRMS, SOIC-16 narrow body; no fail-safe default option | Lower data rate limits use in high-frequency motor control; requires external pull-ups for default-high behavior | Prefer for cost-sensitive industrial automation where 150 Mbps is unnecessary and 3.75 kVRMS isolation is mandated |
Compared with ADUM6633ARZ and ISO6763DWR, the SI8663EB-B-IUR delivers higher speed (150 Mbps vs. 25/50 Mbps), factory-set high-fail-safe behavior eliminating external components, and AEC-Q100 qualification for automotive-grade reliability-making it optimal for traction inverter and OBC signal isolation.
Availability
SI8663EB-B-IUR is available at Aetrix Electronics and suitable for industrial automation systems, battery management systems, and traction inverters requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for SI8663EB-B-IUR 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 Si866x family was designed specifically for high-reliability, high-speed digital isolation in automotive and industrial power systems-emphasizing low power, precise timing, and robust CMTI performance over legacy optocoupler alternatives.
FAQ
What is the isolation rating and safety certification status of SI8663EB-B-IUR?
The SI8663EB-B-IUR provides 2.5 kVRMS isolation and is certified to UL 1577 (5000 VRMS for 1 minute), CSA Component Notice 5A, VDE 0884-10, and IEC 62368-1 for reinforced insulation. These approvals validate its use in medical, industrial, and automotive end-equipment requiring functional safety compliance.
Does SI8663EB-B-IUR support both 3.3 V and 5 V operation?
Yes, SI8663EB-B-IUR operates across 2.5–5.5 V on both VDD1 and VDD2 sides. At 3.3 V, typical supply current is 4.9 mA per side at 1 Mbps and 12.3 mA per side at 100 Mbps; at 5 V, it draws 4.9 mA and 16.4 mA respectively-enabling seamless integration with mixed-voltage systems.
How does the fail-safe high-default mode function in SI8663EB-B-IUR?
In SI8663EB-B-IUR, the fail-safe high-default mode ensures all three outputs (OUT1–OUT3) drive logic high when VDD1 is unpowered but VDD2 remains active. This behavior is factory-configured and eliminates need for external pull-up resistors-critical for maintaining gate driver enable states during controller-side power faults.
What is the channel configuration of SI8663EB-B-IUR and how does it differ from other Si866x variants?
SI8663EB-B-IUR has 3 input channels on VDD1 side and 3 output channels on VDD2 side. Unlike SI8660xx (6-in/0-out) or SI8662xx (4-in/2-out), this symmetric 3/3 split matches bidirectional signal flow in isolated ADC/PWM capture applications and simplifies PCB routing in balanced control architectures.
Is SI8663EB-B-IUR qualified for automotive applications?
SI8663EB-B-IUR is an industrial-grade part (suffix "-I"), but shares identical electrical parameters and construction with the automotive-grade SI8663EB-AU. It is AEC-Q100 qualified, operates from –40°C to +125°C, and supports AIAG-compliant PPAP documentation-making it suitable for automotive subsystems like on-board chargers and battery monitors when sourced under appropriate quality agreements.
SI8663EB-B-IUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm 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:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 4.5ns
- Rise / Fall Time (Typ):
- 4ns, 4ns
- Voltage - Supply:
- 2.5V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
SI8663EB-B-IUR FAQ
1.How can I place an order for SI8663EB-B-IUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8663EB-B-IUR 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 SI8663EB-B-IUR reliable?
The price and inventory of SI8663EB-B-IUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8663EB-B-IUR is usually 5 days.
3.What payment methods are accepted for SI8663EB-B-IUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8663EB-B-IUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8663EB-B-IUR?
SI8663EB-B-IUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8663EB-B-IUR 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 SI8663EB-B-IUR?
For technical support, including SI8663EB-B-IUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8663EB-B-IUR requirements.
6.How does Aetrix verify that SI8663EB-B-IUR is sourced from the original manufacturer or authorized distributors?
All SI8663EB-B-IUR 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 SI8663EB-B-IUR meets industry standards.
7.What is the process for return or replacement of SI8663EB-B-IUR?
All SI8663EB-B-IUR units undergo pre-shipment inspection (PSI). If there is an issue with SI8663EB-B-IUR, 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 SI8663EB-B-IUR part is unused and in its original packaging.
Return procedure for SI8663EB-B-IUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8663EB-B-IUR 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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