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Skyworks Solutions Inc. SI86S663EB-IU
- Part No.:
- SI86S663EB-IU
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI86S663EB-IU.pdf
- Description:
- 2.5 KVRMS ISOLATOR, 6 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:1,196
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Product details
Overview
SI86S663EB-IU from Skyworks Solutions is a 6-channel reinforced digital isolator with 6000 VRMS isolation, 150 Mbps data rate, and AEC-Q100 qualification for automotive systems. It features dual supply operation (2.25–5.5 V), 10 ns typical propagation delay, and Schmitt-trigger CMOS inputs for noise immunity in high-noise motor control and battery management applications.
For engineers reviewing the SI86S663EB-IU datasheet, SI86S663EB-IU pinout, SI86S663EB-IU application, or SI86S663EB-IU equivalent, this page delivers verified specifications, fail-safe mode behavior, sleep-mode control, IEC 60747-17 compliance, and automotive-grade thermal performance (–40 to 125 °C) critical for traction inverter and onboard charger designs.
Technical Context
The SI86S663EB-IU implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust magnetic field immunity. Its architecture supports independent UVLO monitoring per side (VDD1/VDD2), RSTB reset thresholds (~1.7 V), and configurable fail-safe output states (default high/low) during unpowered conditions.
It integrates tri-state outputs via EN1/EN2 enable pins, supports sleep mode via SMb control (750 µA per side), and delivers precise timing with 3.5 ns pulse width distortion and 100 kV/µs transient immunity-key for isolated ADC/DAC interfaces and bidirectional communication in safety-critical automotive subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including SPI and QSPI without external clock conditioning |
| Isolation rating | 6000 VRMS - enables reinforced insulation per IEC 60747-17 and UL 1577 for 600 VAC working voltage systems |
| Propagation delay | 10 ns typical - ensures tight timing alignment in real-time motor control feedback loops |
| Supply voltage | 2.25 to 5.5 V - allows direct interfacing with 3.3 V and 5 V logic domains without level-shifting |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive use including traction inverters and OBCs |
| Transient immunity | 100 kV/µs minimum - suppresses fast common-mode transients in high-dV/dt power electronics |
| Fail-safe mode | Selectable default high/low output - prevents undefined states during brown-out or power sequencing in BMS |
Pinout & Package
SI86S663EB-IU is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS isolation. Pin assignments follow Figure 4 of the datasheet (Si86S66x family).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power domain | Supplies and grounds the input-side logic; requires 0.1 µF + 10 µF bypass capacitors |
| A1–A6 | Side A digital I/O | Unidirectional input channels (6 total); accept Schmitt-trigger CMOS thresholds for noise rejection |
| VDD2, GND2 | Side B power domain | Independent isolated supply for output-side logic; enables galvanic separation between domains |
| B1–B6 | Side B digital I/O | Corresponding isolated output channels; support tri-state via EN1/EN2 control |
| EN1, EN2 | Active-high enable | Enable/disable all outputs on respective sides; used for synchronized channel gating in multi-isolator systems |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot delay-output follows input immediately after UVLO exit |
| Sleep mode (SMb) | Reduces quiescent current to 750 µA per side while retaining wake-on-pin capability for low-power standby |
| Reinforced insulation | IEC 60747-17 certified-meets safety requirements for medical (60601-1) and industrial (62368-1) end equipment |
| Tri-state outputs | EN1/EN2 pins allow bus sharing across multiple isolators without contention on shared lines |
| High EMI immunity | 100 kV/µs CMTI rating ensures reliable operation near IGBTs, SiC MOSFETs, and high-frequency switching nodes |
Applications
| Motor Control Systems | Onboard Chargers (OBC) |
|---|---|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stacks for EV traction motors. IC Role / Device Role / Timing Role: SI86S663EB-IU provides six independent isolated signal paths with <10 ns skew to synchronize PWM edge timing across phases. Use Value: Enables precise dead-time control and fault reporting across isolation barrier without added latency or jitter. | Use Scenario: Signal isolation between AC/DC front-end controller and DC/DC secondary-side regulation in bidirectional OBCs. IC Role / Device Role / Timing Role: SI86S663EB-IU isolates analog sensing, digital control, and status signals across primary-secondary boundary with reinforced 6000 VRMS rating. Use Value: Meets reinforced insulation requirements for 1000 VAC input systems while maintaining 150 Mbps throughput for fast loop updates. |
| Battery Management Systems | Traction Inverters |
Use Scenario: Isolating cell voltage monitoring and pack-level communication in high-voltage EV battery packs (up to 900 V). IC Role / Device Role / Timing Role: SI86S663EB-IU delivers fail-safe default-low outputs during partial power loss to prevent false activation of contactors or balancing FETs. Use Value: Prevents hazardous misoperation during brown-out events-critical for ASIL-B functional safety compliance. | Use Scenario: Interfacing MCU GPIOs to isolated gate drivers and current sensors in high-power SiC-based traction inverters. IC Role / Device Role / Timing Role: SI86S663EB-IU routes six isolated control and feedback signals with <3.5 ns pulse width distortion to preserve PWM fidelity. Use Value: Maintains accurate duty-cycle reproduction at >100 kHz switching frequencies, minimizing torque ripple. |
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 | Integrated isolated DC-DC converter; 6-channel, 100 Mbps, 5000 VRMS | Eliminates need for external isolated power supply but consumes more board area and has lower isolation rating | Choose ADUM6603ARIZ-RL when isolated side power delivery is constrained and 5000 VRMS suffices |
| ISO6763RQWR | 6-channel, 50 Mbps, 5000 VRMS, no sleep mode, 2.25–5.5 V supply | Lacks AEC-Q100 qualification and failsafe configuration; suited for industrial, not automotive | Choose ISO6763RQWR for cost-sensitive industrial automation where automotive qualification is unnecessary |
Compared with ADUM6603ARIZ-RL and ISO6763RQWR, SI86S663EB-IU uniquely combines 6000 VRMS reinforced isolation, AEC-Q100 qualification, programmable fail-safe state, and sleep-mode control-making it optimal for high-reliability automotive power conversion where safety, density, and thermal resilience are prioritized.
Availability
SI86S663EB-IU is available at Aetrix Electronics and suitable for motor control systems, onboard chargers, and battery management systems requiring stable component supply across extended automotive lifecycles.
Supply support for SI86S663EB-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 for wireless, automotive, and industrial markets.
The Si86S6xx family is engineered for high-reliability isolation in automotive electrification and industrial power systems-delivering reinforced safety certification, wide temperature operation, and RF-based noise immunity without startup delay.
FAQ
What is the isolation voltage rating of the SI86S663EB-IU and which safety standards does it meet?
The SI86S663EB-IU provides 6000 VRMS reinforced isolation per UL 1577 and is certified to IEC 60747-17, CSA 62368-1/60601-1, and CQC GB4943.1. This enables its use in high-voltage automotive applications such as traction inverters and onboard chargers where reinforced insulation is mandated for operator safety and system reliability.
Does the SI86S663EB-IU require external initialization or configuration at power-up?
No-the SI86S663EB-IU uses RF-based on/off keying and requires no start-up initialization. Outputs begin tracking inputs within 0.3 ms after VDD exceeds the UVLO threshold (2.18 V typical), with internal 100 kΩ pulldown ensuring defined low state during ramp-up. This behavior is intrinsic to the SI86S663EB-IU architecture.
How does the fail-safe mode work on the SI86S663EB-IU, and how is it selected?
The SI86S663EB-IU offers ordering-option-selectable fail-safe mode: default high or default low output when the input-side supply is unpowered but output-side supply remains active. This behavior is hard-coded per device variant and documented in Table 4 of the datasheet. The SI86S663EB-IU specifically implements the default-low option.
What is the purpose of the SMb pin on the SI86S663EB-IU, and what current savings does it provide?
The SMb (Sleep Mode) pin on the SI86S663EB-IU is an active-low control that reduces total device quiescent current to 750 µA per side by shutting down non-essential circuitry while retaining one always-active channel to monitor SMb state. This enables ultra-low-power standby in battery management and telematics modules without sacrificing wake responsiveness.
Can the SI86S663EB-IU be used in SPI or QSPI interfaces, and what channel configuration supports this?
The SI86S663EB-IU is a general-purpose 6-channel unidirectional isolator and does not integrate dedicated SPI/QSPI logic like the Si86SSxx or Si86SQxx variants. However, its six independent channels can route MOSI, MISO, SCLK, CS, and auxiliary signals in custom SPI implementations-provided directionality and timing constraints are managed externally. For native SPI/QSPI support, consider SI86SS51 or SI86SQ44 instead of SI86S663EB-IU.
SI86S663EB-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
SI86S663EB-IU FAQ
1.How can I place an order for SI86S663EB-IU through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S663EB-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 SI86S663EB-IU reliable?
The price and inventory of SI86S663EB-IU are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S663EB-IU is usually 5 days.
3.What payment methods are accepted for SI86S663EB-IU?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S663EB-IU transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S663EB-IU?
SI86S663EB-IU orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S663EB-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 SI86S663EB-IU?
For technical support, including SI86S663EB-IU datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S663EB-IU requirements.
6.How does Aetrix verify that SI86S663EB-IU is sourced from the original manufacturer or authorized distributors?
All SI86S663EB-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 SI86S663EB-IU meets industry standards.
7.What is the process for return or replacement of SI86S663EB-IU?
All SI86S663EB-IU units undergo pre-shipment inspection (PSI). If there is an issue with SI86S663EB-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 SI86S663EB-IU part is unused and in its original packaging.
Return procedure for SI86S663EB-IU:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S663EB-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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