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Skyworks Solutions Inc. SI86S660EC-AS1
- Part No.:
- SI86S660EC-AS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S660EC-AS1.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 6 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:4,348
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Product details
Overview
SI86S660EC-AS1 from Skyworks Solutions is a six-channel reinforced digital isolator with 6000 VRMS isolation, 150 Mbps data rate, and dual 2.25–5.5 V supply operation. It implements RF-based on/off keying across a semiconductor barrier for high-noise immunity in isolated power control, motor drive feedback, and battery management systems.
For engineers reviewing the SI86S660EC-AS1 datasheet, SI86S660EC-AS1 pinout, SI86S660EC-AS1 application, or SI86S660EC-AS1 equivalent, this page delivers verified specifications, fail-safe mode behavior, AEC-Q100 qualification status, and precise timing parameters including 10 ns propagation delay and 3.5 ns pulse width distortion.
Technical Context
The SI86S660EC-AS1 uses RF modulation (on/off keying) instead of optical coupling, enabling no-startup initialization and robust magnetic field immunity. Its architecture includes independent UVLO and reset circuits per side (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO+ at 2.18 V.
It supports selectable fail-safe output state (default high or low during unpowered input), tri-state outputs via EN1/EN2, and Schmitt-trigger + CMOS threshold inputs. The device operates across –40 to 125 °C and meets IEC 60747-17 reinforced insulation requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial interfaces like isolated SPI and QSPI without external clock conditioning. |
| Isolation rating | 6000 VRMS - enables use in reinforced insulation applications per UL 1577, CSA 62368-1, and VDE 60747-17. |
| Propagation delay | 10 ns typical - ensures tight timing alignment in closed-loop motor control and fast ADC/DAC isolation paths. |
| Pulse width distortion | 3.5 ns typical - preserves duty cycle integrity for PWM signal isolation in inverters and SMPS gate drivers. |
| Supply voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains on both isolated sides. |
| Transient immunity | ≥100 kV/µs - provides immunity against fast common-mode transients in industrial and automotive EMI environments. |
| Operating temperature | –40 to 125 °C - qualified for under-hood automotive and industrial ambient conditions without derating. |
Pinout & Package
SI86S660EC-AS1 is housed in a WB SOIC-16 (wide-body SOIC-16) package with creepage/clearance optimized for 6000 VRMS isolation. 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 | Supplies 2.25–5.5 V to input-side logic and RF transmitter; requires 0.1 µF + 10 µF bypass capacitors. |
| A1–A6 | Side A digital I/O | Unidirectional input channels accepting CMOS/Schmitt-trigger logic; no direction control required. |
| EN1 | Side A output enable | Active-high control: drives all Side A outputs into high-impedance when low; used for bus sharing or power sequencing. |
| VDD2, GND2 | Side B power supply | Independent 2.25–5.5 V supply for output-side logic and RF receiver; bypassing identical to Side A. |
| B1–B6 | Side B digital I/O | Corresponding isolated output channels; default state (high/low) set by ordering option EC (default low). |
| EN2 | Side B output enable | Active-high control: places all Side B outputs in high-impedance; enables bidirectional bus arbitration on isolated side. |
Key Features
| Feature | Design Value |
|---|---|
| No startup initialization | RF modulation architecture eliminates boot-time delays or configuration sequences-outputs become valid within 0.3 ms after VDD stabilization. |
| Fail-safe output mode | Ordering suffix "EC" configures default-low output behavior during Side A unpowering while Side B remains powered-critical for safe shutdown in BMS and traction inverters. |
| High CMTI immunity | ≥100 kV/µs common-mode transient immunity prevents output corruption during fast-switching events in SiC/GaN power stages. |
| Tri-state output control | Dedicated EN1/EN2 pins allow dynamic disabling of all outputs on each side-enables multi-master bus topologies and reduces standby current. |
| AEC-Q100 qualification | Qualified to Grade 0 (–40 to +150 °C junction) per AEC-Q100 Rev G-validates reliability for automotive onboard chargers and battery electric vehicle systems. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
Use Scenario: Isolating encoder feedback and PWM gate signals between MCU and 3-phase inverter stage in servo drives. IC Role / Device Role / Timing Role: Six-channel unidirectional isolator providing timing-aligned, low-jitter signal transfer across 6000 VRMS barrier for IGBT/SiC FET gate drivers and position sensing. Use Value: 10 ns propagation delay and 3.5 ns pulse width distortion preserve PWM fidelity, preventing shoot-through and torque ripple in high-bandwidth motion control. | Use Scenario: Isolating cell voltage monitoring and balancing signals between battery monitor IC and MCU in EV battery packs. IC Role / Device Role / Timing Role: Reinforced isolator delivering fault-tolerant communication across high-voltage domains while maintaining AEC-Q100 reliability and thermal stability up to 125 °C ambient. Use Value: Default-low fail-safe mode (EC suffix) ensures open-circuit detection and safe discharge path activation during MCU power loss or brownout. |
| Isolated Switch-Mode Power Supply | Medical Isolated Data Acquisition |
Use Scenario: Providing isolated feedback for secondary-side regulation in 1–3 kW telecom and server PSUs using digital controllers. IC Role / Device Role / Timing Role: High-speed digital isolator transferring error amplifier output and synchronous rectifier timing signals across reinforced barrier with minimal latency. Use Value: 150 Mbps capability supports high-frequency digital control loops (>1 MHz switching), reducing output capacitance and improving transient response. | Use Scenario: Isolating analog front-end ADC outputs and digital control lines in patient-connected diagnostic equipment (e.g., ECG, EEG). IC Role / Device Role / Timing Role: Six-channel isolator meeting reinforced insulation requirements per IEC 60601-1 and CSA 60601-1 for patient safety in Class BF applications. Use Value: 6000 VRMS isolation and certified creepage/clearance enable compact PCB layout while satisfying 2× MOPP (Means of Patient Protection) requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6600ARIZ-RL | Integrated isolated DC-DC converter (500 mW); 6-channel, 25 Mbps; 3750 VRMS isolation; SOIC-20 package. | Lacks 6000 VRMS rating and AEC-Q100 qualification; suitable only for non-automotive, lower-isolation industrial use. | Select ADUM6600ARIZ-RL only if auxiliary power generation on isolated side is required and 6000 VRMS is not mandated. |
| ISO6760FDWR | 6-channel, 50 Mbps; 5000 VRMS; 2.25–5.5 V; SOIC-16; no AEC-Q100; higher propagation delay (25 ns typical). | Lower speed and isolation limit usage to cost-sensitive industrial automation where 150 Mbps and 6000 VRMS are unnecessary. | Choose ISO6760FDWR for legacy designs requiring TI ecosystem compatibility and relaxed timing/isolation specs. |
Compared with ADUM6600ARIZ-RL and ISO6760FDWR, SI86S660EC-AS1 uniquely combines 150 Mbps speed, 6000 VRMS reinforced isolation, AEC-Q100 Grade 0 qualification, and default-low fail-safe behavior-making it the only viable option for next-generation automotive traction inverters and high-density medical power supplies.
Availability
SI86S660EC-AS1 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, long-term lifecycle support, and traceable sourcing.
Supply support for SI86S660EC-AS1 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 Si86S6xx family was designed specifically for high-reliability, high-speed digital isolation in automotive and industrial systems demanding reinforced insulation, AEC-Q100 compliance, and sub-10 ns timing precision.
FAQ
What is the isolation rating and safety certification status of SI86S660EC-AS1?
SI86S660EC-AS1 is rated for 6000 VRMS isolation per UL 1577 and carries pending certifications for CSA 62368-1, VDE 60747-17 (reinforced), and CQC GB4943.1. It meets IEC 60747-17 reinforced insulation requirements and is AEC-Q100 qualified for automotive use. The SI86S660EC-AS1 achieves these ratings in its WB SOIC-16 package with validated creepage and clearance distances.
Does SI86S660EC-AS1 require external configuration or initialization at power-up?
No, SI86S660EC-AS1 requires no startup initialization due to its RF on/off keying architecture. Outputs become valid within 0.3 ms after VDD exceeds the UVLO+ threshold (2.18 V). The SI86S660EC-AS1 enters normal operation immediately without firmware, register writes, or clock training-reducing system boot time and design complexity.
What does the "EC" suffix indicate in SI86S660EC-AS1?
"EC" denotes the fail-safe output configuration: default-low behavior on Side B outputs when Side A supply (VDD1) is unpowered but Side B supply (VDD2) remains active. This is critical for safety-critical applications like battery management and motor control. SI86S660EC-AS1 implements this behavior via internal circuitry tied to the ordering option-not user-configurable in-circuit.
What are the supply bypassing requirements for SI86S660EC-AS1?
SI86S660EC-AS1 requires two bypass capacitors per side: a 0.1 µF ceramic capacitor and a 10 µF bulk capacitor placed as close as possible between VDD1–GND1 and VDD2–GND2. These minimize high-frequency noise and ensure stable RF oscillator operation. SI86S660EC-AS1 will not meet timing or immunity specs without proper bypassing per Skyworks AN1359 guidelines.
Can SI86S660EC-AS1 be used in bidirectional data paths such as isolated I²C or UART?
No, SI86S660EC-AS1 is a fixed-direction, six-channel unidirectional isolator (A1→B1 through A6→B6). It lacks direction control pins or automatic bus arbitration logic. For bidirectional protocols, Skyworks offers the Si86SQ44 (QSPI mode) or Si86SS51 (SPI with isolated reset), but SI86S660EC-AS1 must be paired with discrete direction-control logic or used only in strictly unidirectional signal chains.
SI86S660EC-AS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 6/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 42ns, 42ns
- Pulse Width Distortion (Max):
- 2ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86S660EC-AS1 FAQ
1.How can I place an order for SI86S660EC-AS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S660EC-AS1 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 SI86S660EC-AS1 reliable?
The price and inventory of SI86S660EC-AS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S660EC-AS1 is usually 5 days.
3.What payment methods are accepted for SI86S660EC-AS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S660EC-AS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S660EC-AS1?
SI86S660EC-AS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S660EC-AS1 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 SI86S660EC-AS1?
For technical support, including SI86S660EC-AS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S660EC-AS1 requirements.
6.How does Aetrix verify that SI86S660EC-AS1 is sourced from the original manufacturer or authorized distributors?
All SI86S660EC-AS1 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 SI86S660EC-AS1 meets industry standards.
7.What is the process for return or replacement of SI86S660EC-AS1?
All SI86S660EC-AS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI86S660EC-AS1, 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 SI86S660EC-AS1 part is unused and in its original packaging.
Return procedure for SI86S660EC-AS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S660EC-AS1 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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