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Skyworks Solutions Inc. SI86S661EE-IS2R
- Part No.:
- SI86S661EE-IS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S661EE-IS2R.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 6 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,722
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Product details
Overview
SI86S661EE-IS2R from Skyworks Solutions is a 6-channel, reinforced-isolation digital isolator with bidirectional signal capability across an integrated semiconductor barrier. It delivers DC to 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating in a WB SOIC-16 package. It operates from 2.25–5.5 V supplies on both sides and supports fail-safe default-high output mode - used in isolated motor control gate drivers and battery management system communication interfaces.
For engineers reviewing the SI86S661EE-IS2R datasheet, SI86S661EE-IS2R pinout, SI86S661EE-IS2R application, or SI86S661EE-IS2R equivalent, key selection criteria include its reinforced IEC 60747-17 certification, AEC-Q100 qualification for automotive use, tri-state output enable control, and precise timing performance under wide temperature (–40 to 125 °C) and supply voltage variation.
Technical Context
The SI86S661EE-IS2R implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture supports independent undervoltage lockout (UVLO) and reset monitoring on both sides (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO hysteresis of 105–160 mV.
It features six fully isolated digital I/O channels (A1–A6 / B1–B6), dual active-high enable inputs (EN1/EN2), and Schmitt-trigger + CMOS threshold inputs for high noise rejection. The device supports selectable fail-safe output state (default-high per -EE suffix) and requires only 0.1 µF and 10 µF bypass capacitors per side - no external biasing or timing components needed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI interfaces without protocol translation. |
| Isolation Rating | 6000 VRMS (1 min, UL 1577) - enables safe operation in industrial inverters and EV traction systems with high working voltages. |
| Propagation Delay | 10 ns typical - ensures tight timing alignment in closed-loop motor control and real-time ADC/DAC isolation paths. |
| Supply Voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level shifters. |
| Operating Temp | –40 to 125 °C - qualified for under-hood automotive and industrial ambient environments without derating. |
| CMTI | ≥100 kV/µs - rejects fast transient coupling in noisy power electronics, preventing false switching in gate drivers. |
| Safety Certifications | IEC 60747-17 (reinforced), UL 1577, CSA 62368-1/60601-1, CQC GB4943.1 - meets end-equipment compliance for medical, industrial, and automotive safety standards. |
Pinout & Package
SI86S661EE-IS2R is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS reinforced insulation. Pin 1 is marked with a dot; pins 1–8 are Side A (input side), pins 9–16 are Side B (output side), separated by an internal semiconductor isolation barrier.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides 2.25–5.5 V bias for A-side transmitters and logic; requires local 0.1 µF + 10 µF bypassing. |
| A1–A6 | Side A digital I/O | Unidirectional or bidirectional data channels (configurable per system design); Schmitt-trigger inputs ensure noise margin. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low - enables bus sharing and power sequencing. |
| VDD2, GND2 | Side B power supply | Independent 2.25–5.5 V bias for B-side receivers; supports galvanic separation between domains. |
| B1–B6 | Side B digital I/O | Isolated mirror of A1–A6; maintains signal integrity across barrier with <3.5 ns pulse width distortion. |
| EN2 | Side B output enable | Active-high control: places B-side outputs in tri-state - critical for multi-master isolated buses and fault containment. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot delay - outputs follow inputs immediately after UVLO exit (~0.3 ms). |
| Fail-safe default-high output | Ordering suffix "-EE" configures outputs to drive high during VDD1 loss while VDD2 remains powered - prevents undefined states in safety-critical shutdowns. |
| Tri-state output enable | Dual EN1/EN2 pins allow independent high-Z control of each side - enables dynamic bus arbitration and hot-swap compatibility. |
| High electromagnetic immunity | 100 kV/µs CMTI and reinforced insulation withstand fast transients in motor drives and inverters without latch-up or corruption. |
| AEC-Q100 Grade 1 qualification | Validated for automotive applications including onboard chargers and battery management systems - full temperature and reliability stress testing performed. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating PWM signals and feedback from microcontroller to IGBT/SiC gate drivers in servo and traction inverters. IC Role / Device Role / Timing Role: Six-channel digital isolator providing bidirectional control and status transfer across 6000 VRMS barrier with 10 ns propagation delay. Use Value: Enables precise timing alignment between control logic and power stage, reducing dead-time uncertainty and improving efficiency. |
Use Scenario: Isolating cell voltage monitoring and balancing commands between MCU and analog front-end in high-voltage battery packs. IC Role / Device Role / Timing Role: Reinforced isolator with AEC-Q100 qualification delivering reliable SPI communication across 400–800 V battery domains. Use Value: Meets IEC 61508 SIL-2 requirements for functional safety via certified reinforced insulation and fail-safe default-high behavior. |
| Isolated Switch-Mode Power Supply | Medical Isolated Data Acquisition |
|
Use Scenario: Transmitting feedback signals (voltage/current sense) and control pulses across primary-secondary boundary in AC/DC and DC/DC converters. IC Role / Device Role / Timing Role: High-speed isolator supporting up to 150 Mbps for digital control loops and fast transient response. Use Value: Replaces optocouplers with superior CMTI (>100 kV/µs), eliminating aging drift and enabling >1 MHz switching frequencies. |
Use Scenario: Isolating ADC/DAC interfaces and digital control lines in patient-connected diagnostic equipment (ECG, EEG, infusion pumps). IC Role / Device Role / Timing Role: Reinforced isolator certified to CSA/IEC 60601-1 for medical safety, operating from –40 to 125 °C. Use Value: Guarantees patient protection via 6000 VRMS withstand and creepage/clearance compliant with 60601-1 2× MOPP requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6601ARIZ-RL | 6-channel, 5000 VRMS, 25 Mbps max, integrated isolated DC-DC converter; no sleep mode or fail-safe option. | Preferred where auxiliary isolated power is required; unsuitable for 150 Mbps or 6000 VRMS systems. | Select ADUM6601ARIZ-RL only if isolated 3.3 V supply generation is needed alongside isolation - not for high-speed or reinforced-rating use cases. |
| ISO6760FDWR | 6-channel, 5000 VRMS, 50 Mbps, TI's reinforced isolator; supports default-low fail-safe only, no AEC-Q100 grade. | Used in industrial PLCs but lacks automotive qualification and high-speed capability for EV BMS. | Choose ISO6760FDWR for cost-sensitive non-automotive industrial designs requiring basic reinforced isolation below 50 Mbps. |
Compared with ADUM6601ARIZ-RL and ISO6760FDWR, SI86S661EE-IS2R uniquely combines 150 Mbps speed, 6000 VRMS reinforced rating, AEC-Q100 Grade 1 qualification, and selectable default-high fail-safe - making it the only viable option for high-performance automotive and industrial isolation where timing, safety, and noise immunity are co-constrained.
Availability
SI86S661EE-IS2R is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, and isolated switch-mode power supplies requiring stable component supply with long-term lifecycle support.
Supply support for SI86S661EE-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 high-reliability RF, analog, and mixed-signal solutions for communications, automotive, and industrial markets.
The Si86S6xx family is engineered for high-speed, reinforced digital isolation in safety-critical systems - targeting automotive electrification, industrial automation, and medical electronics where legacy optocouplers fall short in speed, lifetime, and noise immunity.
FAQ
What is the isolation rating and safety certification status of SI86S661EE-IS2R?
SI86S661EE-IS2R is rated for 6000 VRMS isolation per UL 1577 (1 minute) and carries reinforced insulation certification per IEC 60747-17, CSA 62368-1 and 60601-1, and CQC GB4943.1. These certifications are fully documented and validated for end-equipment compliance in industrial, medical, and automotive applications - no pending approvals remain for this part number.
Does SI86S661EE-IS2R support fail-safe operation, and how is it configured?
Yes, SI86S661EE-IS2R supports fail-safe operation with default-high output behavior, indicated by the "-EE" suffix in the ordering code. When VDD1 is unpowered but VDD2 remains active, outputs B1–B6 drive high - a hardware-configured feature that requires no external circuitry or firmware intervention. This behavior is guaranteed across the full –40 to 125 °C range.
What are the supply voltage requirements and bypassing recommendations for SI86S661EE-IS2R?
SI86S661EE-IS2R operates from 2.25 V to 5.5 V on both VDD1 and VDD2 supplies. Each supply must be decoupled with a 0.1 µF ceramic capacitor placed adjacent to the pin and a 10 µF bulk capacitor within 1 inch - per Skyworks' layout guidance in AN1359. No series resistors or ferrites are required unless system-level EMI exceeds specification limits.
How does the EN1 and EN2 pin functionality work on SI86S661EE-IS2R?
EN1 and EN2 are active-high enable inputs controlling tri-state output behavior on Side A and Side B respectively. When EN1 = low, A1–A6 enter high-impedance; when EN2 = low, B1–B6 enter high-impedance. Both pins retain their function regardless of VDD state - enabling controlled bus release during power sequencing or fault conditions in SI86S661EE-IS2R systems.
Is SI86S661EE-IS2R qualified for automotive applications, and what does AEC-Q100 Grade 1 mean?
Yes, SI86S661EE-IS2R is AEC-Q100 Grade 1 qualified, meaning it has passed stress testing for operation from –40 to 125 °C ambient, including HTOL, TC, UHAST, and ESD per automotive reliability standards. This qualification covers the full device - wafer fabrication, assembly, and test - and validates suitability for under-hood and battery-pack applications in BEVs and HEVs.
SI86S661EE-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:
- 5/1
- 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
SI86S661EE-IS2R FAQ
1.How can I place an order for SI86S661EE-IS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S661EE-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 SI86S661EE-IS2R reliable?
The price and inventory of SI86S661EE-IS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S661EE-IS2R is usually 5 days.
3.What payment methods are accepted for SI86S661EE-IS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S661EE-IS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S661EE-IS2R?
SI86S661EE-IS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S661EE-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 SI86S661EE-IS2R?
For technical support, including SI86S661EE-IS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S661EE-IS2R requirements.
6.How does Aetrix verify that SI86S661EE-IS2R is sourced from the original manufacturer or authorized distributors?
All SI86S661EE-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 SI86S661EE-IS2R meets industry standards.
7.What is the process for return or replacement of SI86S661EE-IS2R?
All SI86S661EE-IS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S661EE-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 SI86S661EE-IS2R part is unused and in its original packaging.
Return procedure for SI86S661EE-IS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S661EE-IS2R Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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