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Skyworks Solutions Inc. SI8660ED-ASR
- Part No.:
- SI8660ED-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8660ED-ASR.pdf
- Description:
- AUTOMOTIVE 5 KV 6-CHANNEL DIGITA
- Quantity:
- Payment:
- Shipping:
Inventory:3,392
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Product details
Overview
SI8660ED-ASR from Skyworks is a six-channel, unidirectional digital isolator with 5 kVRMS reinforced insulation in a wide-body SOIC-16 package. It delivers 150 Mbps data rate, <10 ns propagation delay, and ultra-low power consumption (5.5 mA/channel at 100 Mbps @ 5 V), serving as a high-reliability isolation barrier in battery management systems and traction inverters.
For engineers reviewing the SI8660ED-ASR datasheet, SI8660ED-ASR pinout, SI8660ED-ASR application, or SI8660ED-ASR equivalent, key selection criteria include its AEC-Q100 qualified automotive-grade construction, selectable high-fail-safe output mode, 5 kVRMS isolation rating, and compatibility with 2.5–5.5 V dual-supply operation across –40 to 125 °C.
Technical Context
The SI8660ED-ASR implements RF-based on/off keying modulation across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture supports independent undervoltage lockout (UVLO) on both sides (VDD1/VDD2), with thresholds of 2.24 V (rising) and 2.16 V (falling).
All six channels are input-side referenced (6 inputs on VDD1 side, 0 on VDD2 side), configured for default-high fail-safe operation per ordering option. Schmitt-trigger inputs provide 0.44 V typical hysteresis, and output drivers feature 50 Ω nominal impedance for controlled-impedance PCB routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 150 Mbps - supports high-speed serial interfaces like SPI, RS-485 transceiver control, and real-time motor feedback loops. |
| Propagation Delay | 8.0 ns typical - enables precise timing-critical applications such as gate driver signaling in SiC/GaN inverters. |
| Isolation Rating | 5 kVRMS - meets reinforced insulation requirements per IEC 60950-1, IEC 62368-1, and IEC 60601-1 for medical and industrial safety compliance. |
| Supply Voltage Range | 2.5–5.5 V per side - allows direct interfacing with 3.3 V microcontrollers and 5 V analog front-ends without level-shifting. |
| Fail-Safe Output | Default High - ensures defined logic state during VDD1 loss, critical for safe shutdown in battery management systems. |
| Common-Mode Transient Immunity | 50 kV/µs - suppresses fast transients in high-dv/dt environments like EV traction inverters and industrial motor drives. |
| Operating Temperature | –40 to 125 °C - validated for under-hood automotive use and industrial ambient conditions without derating. |
Pinout & Package
SI8660ED-ASR is housed in a RoHS-compliant 16-pin wide-body SOIC package (WB SOIC-16) with 8.0 mm creepage and clearance, supporting reinforced insulation up to 5 kVRMS. Pin assignments follow standard Si866x channel mapping with VDD1/GND1 on left side and VDD2/GND2 on right side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6 | VDD1-side Inputs (IN1–IN6) | Digital input signals referenced to VDD1; Schmitt-triggered for noise rejection in noisy ECU environments. |
| 7, 14 | GND1, GND2 | Separate ground references isolate primary and secondary domains; require split ground planes with no direct connection. |
| 8, 9, 10, 11, 12, 13 | VDD2-side Outputs (OUT1–OUT6) | CMOS outputs with 50 Ω impedance; drive isolated MCU peripherals or gate drivers directly without external termination resistors. |
| 15, 16 | VDD1, VDD2 | Independent 2.5–5.5 V supplies per side; each requires local 0.1 µF bypass capacitor placed adjacent to respective VDD pin. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates LED aging and temperature drift issues of optocouplers; maintains stable timing and power over 60-year lifetime at rated voltage. |
| Selectably high-fail-safe output | Guarantees logic-high output when VDD1 is unpowered-enabling fail-safe gate disable in isolated half-bridge drivers. |
| Ultra-low power at 100 Mbps | 5.5 mA per channel @ 5 V - reduces thermal load in densely packed BMS modules and extends battery runtime in portable test equipment. |
| Automotive-grade AEC-Q100 qualification | Qualified to Grade 0 (–40 to +150 °C junction); manufactured with zero-defect automotive process flows and AIAG-compliant PPAP documentation. |
| High CMTI immunity | 50 kV/µs common-mode transient rejection - prevents false triggering during switching events in 800 V EV inverters. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage monitoring ADCs and pack-level communication interfaces in 400–800 V EV battery packs. IC Role / Device Role / Timing Role: Six-channel signal isolator bridging high-voltage battery domain (VDD1) and low-voltage MCU domain (VDD2) with fail-safe default-high outputs. Use Value: Enables safe, accurate cell balancing while preventing fault propagation during overvoltage or short-circuit events. |
Use Scenario: Transmitting PWM gate signals from isolated controller to SiC MOSFET half-bridges in high-frequency traction inverters. IC Role / Device Role / Timing Role: Low-skew (<2.5 ns channel-channel), sub-10 ns propagation delay isolator preserving PWM edge integrity at >20 kHz switching frequencies. Use Value: Maintains precise dead-time control and prevents shoot-through in high-efficiency power stages. |
| Industrial Motor Drive | Medical Isolated Data Acquisition |
Use Scenario: Isolating encoder feedback, current sense signals, and safety interlock status in servo drives operating in harsh factory environments. IC Role / Device Role / Timing Role: Six-channel isolator with 50 kV/µs CMTI and Schmitt-trigger inputs rejecting EMI from variable-frequency drives. Use Value: Ensures deterministic position reporting and prevents spurious trips in SIL2-rated motion control systems. |
Use Scenario: Isolating analog front-end (AFE) outputs and digital control lines in patient-connected diagnostic equipment (e.g., MRI gradient controllers). IC Role / Device Role / Timing Role: Reinforced 5 kVRMS isolator certified to IEC 60601-1, providing dual protection for operator and patient against mains leakage. Use Value: Meets stringent creepage/clearance and working voltage requirements for Class BF applied parts without additional safety components. |
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 | Integrated isolated DC-DC converter (5 V output); 6-channel, 100 Mbps; 3.75 kVRMS; SOIC-16 wide body. | Eliminates need for external isolated supply but consumes more quiescent current (10.5 mA/ch @ 1 Mbps) and lacks AEC-Q100 qualification. | Choose ADUM6601ARIZ-RL only if board space constraints prohibit separate isolated power and automotive qualification is not required. |
| ISO6760FDWR | 6-channel, 50 Mbps; 5 kVRMS; SOIC-16 wide body; 2.25–5.5 V operation; no fail-safe option; TI's capacitive isolation. | Lower data rate limits use in high-speed feedback loops; lacks selectable fail-safe mode and AEC-Q100 Grade 0 rating. | Choose ISO6760FDWR only for cost-sensitive industrial applications where 150 Mbps and automotive qualification are unnecessary. |
Compared with ADUM6601ARIZ-RL and ISO6760FDWR, SI8660ED-ASR uniquely combines AEC-Q100 Grade 0 qualification, 150 Mbps speed, 5 kVRMS reinforced insulation, and configurable fail-safe behavior-making it the only drop-in solution for next-generation EV powertrain control where safety, speed, and reliability are co-constrained.
Availability
SI8660ED-ASR is available at Aetrix Electronics and suitable for battery management systems, traction inverters, industrial motor drives, and medical isolated data acquisition requiring stable component supply across automotive and industrial lifecycles.
Supply support for SI8660ED-ASR 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 leader in analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for wireless, automotive, and industrial markets.
The SI8660ED-ASR belongs to Skyworks' Si866x family of CMOS digital isolators, engineered specifically for high-reliability automotive and industrial applications demanding long-term stability, low power, and safety-certified reinforcement.
FAQ
What is the isolation rating and safety certification status of SI8660ED-ASR?
SI8660ED-ASR provides 5 kVRMS reinforced insulation and is certified to UL 1577, CSA Component Notice 5A, VDE 0884-10, IEC 60950-1, IEC 62368-1, and IEC 60601-1. These approvals validate its suitability for safety-critical automotive and medical applications where galvanic separation must withstand sustained high voltage and transient surges.
Does SI8660ED-ASR require external components for basic operation?
SI8660ED-ASR requires only two 0.1 µF ceramic bypass capacitors-one between VDD1 and GND1, and another between VDD2 and GND2-placed as close as possible to their respective pins. No external pull-ups, level shifters, or startup circuitry is needed due to its Schmitt-trigger inputs and zero-initialization RF architecture.
How does the fail-safe mode function in SI8660ED-ASR during power loss?
In SI8660ED-ASR, the "E" in the part number denotes default-high fail-safe mode: when VDD1 is unpowered (0 V) but VDD2 remains active, all six outputs (OUT1–OUT6) drive logic high. This behavior is hardwired via internal pull-ups and ensures predictable shutdown states in battery management and inverter control systems.
What is the maximum achievable data rate and associated timing performance of SI8660ED-ASR?
SI8660ED-ASR supports up to 150 Mbps with 8.0 ns typical propagation delay, 0.5 ns typical channel-channel skew, and 2 ns propagation delay skew. These values are guaranteed across –40 to 125 °C and enable reliable high-speed SPI, digital encoder, and PWM signal isolation without added jitter or distortion.
Is SI8660ED-ASR compatible with both 3.3 V and 5 V logic families?
Yes, SI8660ED-ASR operates across 2.5–5.5 V on both VDD1 and VDD2 sides. Its VIH minimum is 2.0 V and VIL maximum is 0.8 V, ensuring interoperability with 3.3 V LVTTL, 5 V TTL, and mixed-voltage systems-without external level translation circuitry.
SI8660ED-ASR 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:
- Yes
- Number of Channels:
- 6
- Inputs - Side 1/Side 2:
- 6/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 35kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 13ns, 13ns
- Pulse Width Distortion (Max):
- 4.5ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.375V ~ 5.5V
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI8660ED-ASR FAQ
1.How can I place an order for SI8660ED-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8660ED-ASR 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 SI8660ED-ASR reliable?
The price and inventory of SI8660ED-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8660ED-ASR is usually 5 days.
3.What payment methods are accepted for SI8660ED-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8660ED-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8660ED-ASR?
SI8660ED-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8660ED-ASR 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 SI8660ED-ASR?
For technical support, including SI8660ED-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8660ED-ASR requirements.
6.How does Aetrix verify that SI8660ED-ASR is sourced from the original manufacturer or authorized distributors?
All SI8660ED-ASR 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 SI8660ED-ASR meets industry standards.
7.What is the process for return or replacement of SI8660ED-ASR?
All SI8660ED-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8660ED-ASR, 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 SI8660ED-ASR part is unused and in its original packaging.
Return procedure for SI8660ED-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8660ED-ASR Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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