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Skyworks Solutions Inc. SI86S660BC-AS1R
- Part No.:
- SI86S660BC-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S660BC-AS1R.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 6 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:2,546
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Product details
Overview
SI86S660BC-AS1R from Skyworks Solutions is a 6-channel, bidirectional digital isolator with reinforced 6000 VRMS isolation, designed for high-noise industrial and automotive systems requiring galvanic separation between controller and power stage domains. It supports DC–150 Mbps data rates, operates across 2.25–5.5 V supplies on both sides, and features selectable fail-safe output (default low), 10 ns typical propagation delay, and AEC-Q100 qualification for automotive use in battery management and traction inverters.
For engineers reviewing the SI86S660BC-AS1R datasheet, SI86S660BC-AS1R pinout, SI86S660BC-AS1R application, or SI86S660BC-AS1R equivalent, key selection criteria include reinforced IEC 60747-17 certification, 6-channel independent I/O mapping, tri-state enable control per side, Schmitt-trigger + CMOS input thresholds, and compatibility with isolated ADC/DAC interfaces and motor gate driver feedback loops.
Technical Context
The SI86S660BC-AS1R implements RF-based on/off keying modulation across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity up to 100 kV/µs CMTI. Its architecture supports independent supply domains (VDD1/GND1 and VDD2/GND2) with dual undervoltage lockout (UVLO) and reset circuitry per side, ensuring deterministic behavior during asymmetric power sequencing.
All six channels are fully bidirectional and independently configurable via EN1/EN2 pins, with no direction-control pin required. The device uses HF XMTR/RCVR circuit blocks per channel and includes internal 100 kΩ weak pulldowns on unpowered outputs, satisfying fail-safe default-low operation as specified by the "BC" ordering option.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 6000 VRMS (1 min, UL 1577); reinforced insulation per IEC 60747-17 - enables direct interface with 1000 VDC bus systems. |
| Data Rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI, CAN FD gate drivers, and real-time sensor feedback. |
| Propagation Delay | 10 ns typical - ensures tight timing alignment in closed-loop motor control and fast ADC sampling systems. |
| Supply Voltage Range | 2.25 V to 5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Fail-Safe Mode | Default low output (BC variant) - guarantees safe shutdown state during VDD1/VDD2 brownout or loss. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
| CMTI | ≥100 kV/µs - prevents false triggering in high-dV/dt switching nodes of SiC/GaN inverters. |
Pinout & Package
SI86S660BC-AS1R is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS isolation. Pin assignments follow Figure 4 (Si86S660) in the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A supply | Power for A-side I/Os (A1–A6) and EN1; must be bypassed with 0.1 µF + 10 µF capacitors. |
| GND1 | Side A ground | Reference for A-side signals; separate from GND2 to maintain isolation integrity. |
| A1–A6 | Side A digital I/O | 6 bidirectional isolated channels; each maps directly to B1–B6 across barrier. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low. |
| GND2 | Side B ground | Reference for B-side signals; galvanically isolated from GND1. |
| B1–B6 | Side B digital I/O | 6 bidirectional isolated channels; electrically mirrored to A1–A6. |
| EN2 | Side B output enable | Active-high control: drives all B-side outputs into high-impedance when low. |
| VDD2 | Side B supply | Power for B-side I/Os (B1–B6) and EN2; requires independent bypassing. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF carrier modulation eliminates boot sequence delays - outputs become valid within 0.3 ms of VDD stabilization. |
| Tri-state output control | Dual EN1/EN2 pins allow independent high-Z control of A- and B-side I/Os - essential for shared-bus arbitration. |
| Schmitt-trigger + CMOS inputs | Input hysteresis ≥0.15×VDDx and VIH/VIL thresholds at 0.7/0.3×VDDx - reject >36 ns noise glitches without external filtering. |
| Reinforced safety certification | UL 1577, VDE 60747-17, CSA 62368-1, CQC GB4943.1 - satisfies end-equipment requirements for medical and EV charging systems. |
| AEC-Q100 Grade 0 | Qualified for –40 °C to +125 °C operation with full automotive process flow - suitable for OBC, BMS, and traction inverter modules. |
Applications
| Motor Control Systems | Isolated ADC/DAC Interfaces |
|---|---|
|
Use Scenario: Gate driver feedback and PWM signal isolation in 3-phase inverter stacks using SiC MOSFETs. IC Role / Device Role / Timing Role: Bidirectional isolation of fault signals, current-sense data, and dead-time synchronized PWMs between MCU and high-voltage half-bridge. Use Value: 10 ns propagation delay and ≥100 kV/µs CMTI prevent shoot-through during fast switching transients. |
Use Scenario: Isolating precision SAR ADC outputs and DAC control lines in industrial PLC analog I/O modules. IC Role / Device Role / Timing Role: Galvanic separation of ±10 V analog front-end domain from 3.3 V digital controller domain while preserving signal integrity. Use Value: 150 Mbps capability supports oversampled 1 MSPS ADC streams without serialization bottlenecks. |
| Battery Management Systems | Onboard Chargers |
|
Use Scenario: Cell voltage monitoring and pack-level communication isolation in high-voltage EV battery packs (up to 900 V). IC Role / Device Role / Timing Role: Reliable transmission of cell balancing commands and voltage readings across isolation barrier in presence of high common-mode noise. Use Value: 6000 VRMS rating and reinforced insulation meet IEC 61851-23 requirements for functional safety in BMS. |
Use Scenario: Isolating AC/DC and DC/DC control loops in bi-directional OBCs for Level 2 and DC fast charging. IC Role / Device Role / Timing Role: Separation of primary-side PFC controller and secondary-side LLC resonant controller domains with precise timing coordination. Use Value: Dual supply range (2.25–5.5 V) enables direct interfacing with both 3.3 V MCU and 5 V gate driver ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM6601ARIZ | 6-channel, 5000 VRMS, 25 Mbps max, integrated isolated DC-DC converter on chip. | Lacks 150 Mbps speed and 6000 VRMS rating; suited for lower-speed, self-powered isolated logic where supply generation is needed. | Choose ADUM6601ARIZ only if isolated power rail generation is required and data rate ≤25 Mbps suffices. |
| ISO6760FDWR | 6-channel, 5000 VRMS, 50 Mbps, TI's reinforced isolator with lower CMTI (85 kV/µs). | Not AEC-Q100 qualified; limited to industrial temp range (–40 °C to +105 °C); lacks fail-safe default-low option. | ISO6760FDWR is viable for cost-sensitive industrial automation where 50 Mbps and 5000 VRMS meet requirements. |
Compared with ADUM6601ARIZ and ISO6760FDWR, SI86S660BC-AS1R delivers higher isolation voltage (6000 vs. 5000 VRMS), faster data rate (150 vs. 25/50 Mbps), automotive-grade qualification, and deterministic fail-safe behavior - making it the preferred choice for high-reliability EV and industrial power systems.
Availability
SI86S660BC-AS1R is available at Aetrix Electronics and suitable for industrial automation systems, battery management systems, and onboard chargers requiring stable component supply with long-term lifecycle support and traceable sourcing.
Supply support for SI86S660BC-AS1R 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 Si86S6xx family was engineered specifically for high-noise, high-reliability applications in automotive electrification and industrial power conversion-delivering best-in-class CMTI, reinforced safety certification, and zero-startup-delay operation.
FAQ
What is the isolation voltage rating of the SI86S660BC-AS1R and which safety standards does it meet?
The SI86S660BC-AS1R provides 6000 VRMS isolation for 1 minute per UL 1577 and is certified to IEC 60747-17 (reinforced), CSA 62368-1, VDE 62368-1, and CQC GB4943.1. This rating enables direct use in 1000 VDC bus systems and satisfies safety requirements for EV battery packs and medical equipment. SI86S660BC-AS1R meets these standards without derating at full temperature range.
Does the SI86S660BC-AS1R require external configuration or initialization after power-up?
No. The SI86S660BC-AS1R uses RF on/off keying modulation and requires no firmware, register writes, or startup sequence. Outputs become valid within 0.3 ms of VDD crossing UVLO+, with deterministic default-low behavior during brownout. SI86S660BC-AS1R achieves this through hardware-only architecture-no clock or reset pin needed.
How many independent channels does the SI86S660BC-AS1R support, and are they bidirectional?
The SI86S660BC-AS1R integrates six fully independent, bidirectional digital isolation channels (A1–A6 ↔ B1–B6), each with identical electrical characteristics and timing. No direction-control pin is required-each channel passes data in both directions simultaneously. SI86S660BC-AS1R supports true 6-wire isolated serial links or split I²C/SPI signal routing.
What is the meaning of the "BC" suffix in SI86S660BC-AS1R?
The "BC" suffix denotes the fail-safe output configuration: default-low behavior when either VDD1 or VDD2 is unpowered. During undervoltage conditions, outputs are actively pulled low via internal 100 kΩ resistors. SI86S660BC-AS1R differs from "BD" (default-high) variants and ensures safe shutdown in motor control or power supply enable circuits.
Can the SI86S660BC-AS1R operate with different supply voltages on Side A and Side B?
Yes. SI86S660BC-AS1R supports independent 2.25–5.5 V supplies on VDD1 and VDD2-enabling direct interfacing between 3.3 V microcontrollers and 5 V gate drivers or analog sensors. Each side has its own UVLO and reset circuitry, allowing asymmetric power sequencing without latch-up or undefined states. SI86S660BC-AS1R maintains full functionality across all valid VDD combinations.
SI86S660BC-AS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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
SI86S660BC-AS1R FAQ
1.How can I place an order for SI86S660BC-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S660BC-AS1R 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 SI86S660BC-AS1R reliable?
The price and inventory of SI86S660BC-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S660BC-AS1R is usually 5 days.
3.What payment methods are accepted for SI86S660BC-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S660BC-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S660BC-AS1R?
SI86S660BC-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S660BC-AS1R 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 SI86S660BC-AS1R?
For technical support, including SI86S660BC-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S660BC-AS1R requirements.
6.How does Aetrix verify that SI86S660BC-AS1R is sourced from the original manufacturer or authorized distributors?
All SI86S660BC-AS1R 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 SI86S660BC-AS1R meets industry standards.
7.What is the process for return or replacement of SI86S660BC-AS1R?
All SI86S660BC-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S660BC-AS1R, 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 SI86S660BC-AS1R part is unused and in its original packaging.
Return procedure for SI86S660BC-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S660BC-AS1R Tags
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