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Skyworks Solutions Inc. SI8660BD-ASR
- Part No.:
- SI8660BD-ASR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8660BD-ASR.pdf
- Description:
- AUTOMOTIVE 5 KV 6-CHANNEL DIGITA
- Quantity:
- Payment:
- Shipping:
Inventory:2,789
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Product details
Overview
SI8660BD-ASR from Skyworks is a six-channel, unidirectional digital isolator with 5 kVRMS reinforced insulation, 150 Mbps data rate, <10 ns propagation delay, and fail-safe low-default output mode. It operates across –40 to 125 °C and supports 2.5–5.5 V dual supplies, enabling robust signal isolation in high-noise motor control and battery management systems.
For engineers reviewing the SI8660BD-ASR datasheet, SI8660BD-ASR pinout, SI8660BD-ASR application, or SI8660BD-ASR equivalent, this page delivers verified specifications, SOIC-16 wide-body package details, automotive-grade AEC-Q100 qualification, and real-world timing and power metrics for high-reliability isolated interface design.
Technical Context
The SI8660BD-ASR implements RF-based on/off keying across a semiconductor isolation barrier-no startup initialization required. Its six channels are all input-side (VDD1) driven with zero outputs on VDD2 side, supporting unidirectional signal transmission only.
It features Schmitt-trigger inputs for noise immunity, selectable fail-safe mode (low default), undervoltage lockout (UVLO) on both sides, and precise timing with ≤2.5 ns channel-to-channel skew. All parameters remain stable over temperature and lifetime without calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 6 unidirectional, all inputs on VDD1 side, zero outputs on VDD2 side |
| Max Data Rate | 150 Mbps - supports high-speed serial interfaces like SPI, RS-485, and CAN FD physical layer signaling |
| Propagation Delay | 5.0–13 ns - enables sub-10 ns timing-critical feedback loops in motor gate drivers |
| Isolation Rating | 5 kVRMS reinforced - certified to UL, VDE, CSA, CQC; suitable for 1000 VDC bus systems |
| Supply Voltage | 2.5–5.5 V per side - interoperable with 3.3 V microcontrollers and 5 V analog front-ends |
| Power @ 100 Mbps | 5.0–34.1 mA per side - ultra-low active power enables thermal-constrained industrial modules |
| CMTI | ≥35 kV/µs - prevents false triggering in fast-switching inverters with dV/dt > 50 kV/µs |
Pinout & Package
SI8660BD-ASR uses a 16-pin wide-body SOIC package (WB SOIC-16) with 8.3 mm creepage/clearance, rated for 5 kVRMS reinforced insulation. Pin 1 is marked with a dot; pins 1–8 serve VDD1/GND1/input side, pins 9–16 serve VDD2/GND2/output side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side supply | 2.5–5.5 V power for transmitter side; requires 0.1 µF bypass capacitor |
| GND1 | Input-side ground | Reference for all six input signals; must be separated from GND2 by isolation barrier |
| IN1–IN6 | Digital inputs | Schmitt-triggered, 1.0–1.9 V hysteresis; tolerate 0–VDD1 logic levels |
| VDD2 | Output-side supply | 2.5–5.5 V power for receiver side; independent of VDD1 |
| GND2 | Output-side ground | Reference for all six isolated outputs; galvanically isolated from GND1 |
| OUT1–OUT6 | Digital outputs | Fail-safe low-default; 50 Ω nominal output impedance; drive 15 pF loads at 150 Mbps |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | No light-emitting components or laser diodes - eliminates LED aging, enabling 60-year life at rated voltage |
| Selectable fail-safe mode | Low-default output during VDD1 loss ensures safe shutdown in BMS and traction inverter control paths |
| Sub-10 ns propagation delay | Enables real-time current sensing feedback in <1 µs switching cycles for SiC/GaN power stages |
| AEC-Q100 Grade 1 | Qualified for automotive applications including on-board chargers and battery management systems |
| 50 kV/µs CMTI | Immune to common-mode transients in 800 V EV battery packs with fast IGBT/SiC switching |
Applications
| Motor Control Systems | Isolated ADC Interfaces |
|---|---|
Use Scenario: Gate driver signal isolation in 3-phase inverter stacks for EV traction motors. IC Role / Device Role / Timing Role: Transmits PWM enable/disable and fault signals across 800 V DC bus with <10 ns timing fidelity. Use Value: Prevents shoot-through via deterministic low-default fail-safe behavior during controller reset or brownout. |
Use Scenario: Isolating serial data lines between precision delta-sigma ADCs and MCU in medical imaging power supplies. IC Role / Device Role / Timing Role: Provides 150 Mbps SPI clock/data isolation while maintaining sub-ns skew for synchronized multi-channel sampling. Use Value: Eliminates ground loop noise and preserves ENOB in 24-bit ADC measurements under EMI stress. |
| Battery Management Systems | Industrial PLC I/O Modules |
Use Scenario: Cell monitoring IC communication isolation in 96-cell EV battery packs operating up to 450 V. IC Role / Device Role / Timing Role: Carries isolated UART or custom serial commands between master controller and distributed cell supervisors. Use Value: Meets reinforced insulation requirements per IEC 62368-1 and withstands 5 kVRMS surge testing per ISO 7637-2. |
Use Scenario: Digital input conditioning in DIN-rail mounted PLCs interfacing with 24 V DC field sensors. IC Role / Device Role / Timing Role: Converts noisy industrial sensor signals into clean, isolated logic levels for FPGA or ARM-based controllers. Use Value: Schmitt-trigger inputs reject >100 mV noise spikes; 125 °C operation supports fanless enclosure designs. |
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, 5 kVRMS, but uses iCoupler magnetic isolation; higher 10.5 mA typical supply current at 1 Mbps | Requires external isolated DC-DC converter; lacks integrated fail-safe low-default mode | Prefer SI8660BD-ASR when board space is constrained and fail-safe behavior is mandatory without external logic. |
| ISO6760FDWR | 6-channel, 5 kVRMS capacitive isolator; 100 Mbps max data rate; no AEC-Q100 qualification | Not qualified for automotive use; lower CMTI (25 kV/µs); narrower temp range (–40 to 105 °C) | Choose SI8660BD-ASR for automotive BMS or industrial systems requiring >100 Mbps and full AEC-Q100 compliance. |
Compared with ADUM6601ARIZ-RL and ISO6760FDWR, SI8660BD-ASR delivers superior 150 Mbps throughput, guaranteed low-default fail-safe operation, and automotive-grade reliability-making it optimal for safety-critical, high-speed isolated control in EV and industrial automation.
Availability
SI8660BD-ASR is available at Aetrix Electronics and suitable for battery management systems, motor control inverters, and isolated ADC/DAC interfaces requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.
Supply support for SI8660BD-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 semiconductor company specializing in high-performance analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.
The SI8660BD-ASR belongs to Skyworks' Si866x family of ultra-low-power digital isolators, designed specifically for automotive and industrial applications demanding high data rates, long-term reliability, and reinforced safety certification.
FAQ
What is the fail-safe output behavior of SI8660BD-ASR during power loss?
The SI8660BD-ASR is configured with a low-default fail-safe mode: when VDD1 is unpowered but VDD2 remains active, all six outputs default to logic low. This behavior is hardwired per ordering code ('BD' = low default) and ensures safe shutdown in motor control and BMS applications where inactive states must be asserted.
Does SI8660BD-ASR support bidirectional communication?
No, SI8660BD-ASR is strictly unidirectional - all six channels transmit from VDD1 side (IN1–IN6) to VDD2 side (OUT1–OUT6). It does not support reverse data flow. For bidirectional isolation, consider SI8663BD-ASR (3+3 channel configuration) instead.
What is the minimum pulse width supported by SI8660BD-ASR?
The SI8660BD-ASR supports a minimum pulse width of 5.0 ns, as specified in its electrical characteristics table. This enables reliable transmission of narrow pulses used in high-frequency PWM control, time-of-flight sensing, and fast serial protocols such as MIPI I3C.
Is SI8660BD-ASR qualified for automotive applications?
Yes, SI8660BD-ASR carries the '-A' suffix indicating automotive-grade qualification. It is AEC-Q100 Grade 1 qualified (–40 to 125 °C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation and IMDS/CAMDS listings.
What package type and creepage distance does SI8660BD-ASR use?
SI8660BD-ASR uses a 16-pin wide-body SOIC package (WB SOIC-16) with 8.3 mm creepage and clearance. This meets reinforced insulation requirements for 5 kVRMS working voltage and complies with IEC 60950-1, IEC 62368-1, and IEC 60601-1 standards.
SI8660BD-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
SI8660BD-ASR FAQ
1.How can I place an order for SI8660BD-ASR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8660BD-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 SI8660BD-ASR reliable?
The price and inventory of SI8660BD-ASR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8660BD-ASR is usually 5 days.
3.What payment methods are accepted for SI8660BD-ASR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8660BD-ASR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8660BD-ASR?
SI8660BD-ASR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8660BD-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 SI8660BD-ASR?
For technical support, including SI8660BD-ASR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8660BD-ASR requirements.
6.How does Aetrix verify that SI8660BD-ASR is sourced from the original manufacturer or authorized distributors?
All SI8660BD-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 SI8660BD-ASR meets industry standards.
7.What is the process for return or replacement of SI8660BD-ASR?
All SI8660BD-ASR units undergo pre-shipment inspection (PSI). If there is an issue with SI8660BD-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 SI8660BD-ASR part is unused and in its original packaging.
Return procedure for SI8660BD-ASR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8660BD-ASR Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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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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