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Skyworks Solutions Inc. SI86S663BE-IS2R
- Part No.:
- SI86S663BE-IS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S663BE-IS2R.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 6 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:3,853
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Product details
Overview
SI86S663BE-IS2R from Skyworks Solutions is a 6-channel reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier, supporting up to 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating. It operates from 2.25–5.5 V on both sides and is qualified to AEC-Q100 for automotive traction inverters and battery management systems.
For engineers reviewing the SI86S663BE-IS2R datasheet, SI86S663BE-IS2R pinout, SI86S663BE-IS2R application, or SI86S663BE-IS2R equivalent, key selection criteria include reinforced IEC 60747-17 certification, fail-safe default-low output option, tri-state enable control per side, and compatibility with industrial motor drives requiring high CMTI (>100 kV/µs) and –40 to 125 °C operation.
Technical Context
The SI86S663BE-IS2R implements RF-based on/off keying modulation across a monolithic silicon isolation barrier, eliminating startup initialization and enabling deterministic timing without PLL lock time. Its architecture supports independent undervoltage lockout (UVLO) and reset monitoring on both sides, with RSTB thresholds at ~1.7 V and UVLO hysteresis of 105–160 mV.
All six channels are unidirectional (three A→B, three B→A), with dedicated EN1 and EN2 pins enabling tri-state control of Side A and Side B outputs respectively. The device includes Schmitt-trigger + CMOS threshold inputs for noise immunity and supports selectable fail-safe mode-this specific variant (BE suffix) defaults to low output during input-side power loss while maintaining powered-side functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces including isolated SPI clock domains and real-time motor control feedback loops. |
| Propagation delay | 10 ns typical - enables sub-20 ns round-trip latency in closed-loop isolated gate driver feedback paths. |
| Isolation rating | 6000 VRMS for 1 minute - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for >1000 VAC working voltage systems. |
| Supply range | 2.25–5.5 V per side - allows direct interface with 3.3 V microcontrollers and 5 V analog front-ends without level-shifting. |
| Temperature range | –40 to 125 °C - qualified for under-hood automotive use and industrial variable-frequency drives. |
| CMTI | ≥100 kV/µs - ensures reliable operation in high-dv/dt environments such as SiC/GaN inverter switching nodes. |
| Fail-safe mode | Default low (BE ordering option) - forces safe logic-low state on outputs when Side A supply collapses, critical for gate driver disable safety. |
Pinout & Package
SI86S663BE-IS2R is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS reinforced isolation. Pin assignments follow Figure 4 (Si86S66x) in the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides bias for three forward channels (A1–A3 → B1–B3); decoupling requires 0.1 µF + 10 µF per side. |
| A1–A3 | Side A input/output | Unidirectional inputs from controller side; driven by MCU GPIO or PWM signals. |
| EN1 | Side A output enable | Active-high control: pulls all Side A outputs (A1–A3) into high-impedance when low - used for bus arbitration or safe shutdown. |
| VDD2, GND2 | Side B power supply | Isolated supply domain for three reverse channels (B1–B3 ← A1–A3); galvanically separated from Side A. |
| B1–B3 | Side B input/output | Unidirectional outputs to isolated peripherals (e.g., gate drivers, ADC references, fault monitors). |
| EN2 | Side B output enable | Active-high control: disables Side B outputs (B1–B3) independently - enables isolated system-level reset sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF carrier modulation eliminates boot-time delays - output follows input within 0.3 ms after VDD rise above UVLO+, enabling immediate post-power-on communication. |
| Tri-state outputs with enable | Dedicated EN1/EN2 pins allow per-side output disable without affecting internal state - essential for hot-swap isolation and multi-master bus sharing. |
| Reinforced IEC 60747-17 rating | Validated barrier design meets reinforced insulation requirements for medical (60601-1) and industrial (62368-1) end-equipment certifications without external components. |
| Schmitt trigger + CMOS thresholds | Input hysteresis ≥0.15×VDD provides ≥300 mV noise margin at 3.3 V - rejects EFT bursts and conducted transients in motor drive PCB layouts. |
| Fail-safe default-low (BE) | When VDD1 drops below UVLO–, outputs B1–B3 assert logic low regardless of prior state - satisfies IEC 61800-5-2 functional safety requirements for drive disable. |
Applications
| Industrial Motor Control | Automotive Traction Inverter |
|---|---|
|
Use Scenario: Isolating PWM signals and fault feedback between MCU and 3-phase SiC gate drivers in servo drives. IC Role / Device Role / Timing Role: Six-channel unidirectional isolator providing three A→B control paths (PWM, EN, DIR) and three B→A status paths (DESAT, OT, READY). Use Value: 10 ns propagation delay enables <20 ns total loop latency; 6000 VRMS rating withstands >1200 VDC bus transients. |
Use Scenario: Signal isolation between vehicle MCU and dual inverter modules in BEV powertrain systems. IC Role / Device Role / Timing Role: Reinforced isolator for phase current sensing interface (isolated ADC SDO), gate driver enable, and overtemperature reporting. Use Value: AEC-Q100 Grade 0 qualification and –40 to 125 °C operation ensure reliability in under-hood thermal cycling. |
| Isolated Switch-Mode Power Supply | Medical Isolated Data Acquisition |
|
Use Scenario: Feedback path isolation in 3 kW LLC resonant converters with synchronous rectification. IC Role / Device Role / Timing Role: Transmits isolated VOUT sense, primary-side current monitor, and secondary-side ready signal across 4 kVRMS barrier. Use Value: 150 Mbps capability supports high-resolution digital PWM encoding; 100 kV/µs CMTI prevents false triggering during MOSFET switching edges. |
Use Scenario: Patient-connected ECG front-end with isolated ADC interface and microcontroller communication. IC Role / Device Role / Timing Role: Provides reinforced isolation between analog sensor domain (IEC 60601-1 Class I/F) and digital processing unit. Use Value: UL 1577 and VDE 60747-17 certification satisfies creepage/clearance requirements for 2×MOPP patient protection. |
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 | 6-channel, 50 Mbps max, 25 ns propagation delay, 5000 VRMS, integrated isolated DC-DC converter. | Lacks AEC-Q100 qualification; includes on-chip iso-power but higher quiescent current (10 mA vs. 2.8 mA @ 5 V). | Choose ADUM6603ARIZ-RL when isolated power rail generation is required and speed <50 Mbps suffices. |
| ISO6763FRDWR | 6-channel, 50 Mbps, 11 ns propagation delay, 5000 VRMS, failsafe default-high only, no sleep mode. | Not AEC-Q100 qualified; lower CMTI (85 kV/µs); no fail-safe low option - incompatible with safety-critical disable requirements. | Choose ISO6763FRDWR for cost-sensitive industrial PLC I/O modules where default-high behavior is acceptable. |
Compared with ADUM6603ARIZ-RL and ISO6763FRDWR, SI86S663BE-IS2R delivers 3× higher data rate, certified automotive qualification, and a fail-safe low option essential for gate driver disable - making it uniquely suitable for high-performance traction inverter control.
Availability
SI86S663BE-IS2R is available at Aetrix Electronics and suitable for industrial motor control, automotive traction inverters, and isolated switch-mode power supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SI86S663BE-IS2R 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 high-reliability applications.
The Si86S6xx family is engineered for high-speed, reinforced digital isolation in harsh environments - targeting automotive electrification, industrial automation, and medical systems demanding certified safety, low latency, and robust EMC performance.
FAQ
What is the isolation rating and safety certification status of SI86S663BE-IS2R?
SI86S663BE-IS2R is rated for 6000 VRMS isolation per UL 1577 for 1 minute and carries reinforced insulation certification per IEC 60747-17. It is also pending CSA 62368-1 and VDE 60747-17 approvals. The device meets AEC-Q100 Grade 0 qualification for automotive use and supports 2×MOPP in medical designs per IEC 60601-1 when implemented with proper PCB creepage.
Does SI86S663BE-IS2R support bidirectional communication on individual channels?
No, SI86S663BE-IS2R implements six unidirectional channels: three fixed A→B (A1–A3 to B1–B3) and three fixed B→A (B1–B3 to A1–A3). Directionality is hardwired per channel; it does not support dynamic reversal like the Si86SQ44 QSPI isolator. For true bidirectional bus isolation, a separate device such as Si86SQ44 or discrete channel pairing is required.
What is the meaning of the 'BE' suffix in SI86S663BE-IS2R?
The 'BE' suffix in SI86S663BE-IS2R denotes the fail-safe output configuration: default-low behavior during Side A (input-side) undervoltage or power loss. When VDD1 falls below UVLO–, outputs B1–B3 are actively driven low - a critical feature for safety-critical disable functions in motor drives and inverters. This differs from 'BD' (default-high) and 'BA' (no fail-safe) variants.
Can SI86S663BE-IS2R be used with 3.3 V and 5 V supplies simultaneously on each side?
Yes, SI86S663BE-IS2R supports independent 2.25–5.5 V supplies on Side A (VDD1/GND1) and Side B (VDD2/GND2). It is commonly deployed with 3.3 V on the MCU side (Side A) and 5 V on the gate driver or sensor side (Side B), with full logic-level compatibility and no external level shifters required due to CMOS/Schmitt-trigger inputs and rail-to-rail output swing.
How does the EN1 and EN2 pin functionality work in SI86S663BE-IS2R?
In SI86S663BE-IS2R, EN1 is an active-high enable for all Side A outputs (A1–A3), placing them in high-impedance when low; EN2 performs the same function for Side B outputs (B1–B3). These pins operate independently - enabling selective isolation of control or feedback paths during system fault conditions or power sequencing without resetting internal state.
SI86S663BE-IS2R 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:
- 6000Vrms
- 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-SOIC
SI86S663BE-IS2R FAQ
1.How can I place an order for SI86S663BE-IS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S663BE-IS2R 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 SI86S663BE-IS2R reliable?
The price and inventory of SI86S663BE-IS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S663BE-IS2R is usually 5 days.
3.What payment methods are accepted for SI86S663BE-IS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S663BE-IS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S663BE-IS2R?
SI86S663BE-IS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S663BE-IS2R 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 SI86S663BE-IS2R?
For technical support, including SI86S663BE-IS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S663BE-IS2R requirements.
6.How does Aetrix verify that SI86S663BE-IS2R is sourced from the original manufacturer or authorized distributors?
All SI86S663BE-IS2R 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 SI86S663BE-IS2R meets industry standards.
7.What is the process for return or replacement of SI86S663BE-IS2R?
All SI86S663BE-IS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S663BE-IS2R, 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 SI86S663BE-IS2R part is unused and in its original packaging.
Return procedure for SI86S663BE-IS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S663BE-IS2R Tags
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