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Skyworks Solutions Inc. SI8655BB-AS1R
- Part No.:
- SI8655BB-AS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8655BB-AS1R.pdf
- Description:
- AUTOMOTIVE 2.5 KV 5-CHANNEL DIGI
- Quantity:
- Payment:
- Shipping:
Inventory:1,269
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Product details
Overview
SI8655BB-AS1R from Skyworks is a five-channel, unidirectional digital isolator with 5 kVRMS reinforced isolation, 150 Mbps data rate, <10 ns propagation delay, and fail-safe low-default output state. It operates across 2.5–5.5 V supply rails on both sides and supports industrial and automotive systems requiring high noise immunity and long-term reliability in harsh environments.
For engineers reviewing the SI8655BB-AS1R datasheet, SI8655BB-AS1R pinout, SI8655BB-AS1R application, or SI8655BB-AS1R equivalent, key selection criteria include its 5 kVRMS wide-body SOIC-16 package, AEC-Q100 qualification, Schmitt-trigger inputs, tri-state enable control, and ultra-low power consumption at 100 Mbps (5.5 mA per channel @ 5 V).
Technical Context
The SI8655BB-AS1R implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust operation without optical degradation. All five channels are input-side (VDD1) to output-side (VDD2) unidirectional, with no inputs on the output side (0 inputs on VDD2 side), matching the Si8655 family architecture.
It features dual undervoltage lockout (UVLO) monitors-one per side-with 70 mV hysteresis, 50 kV/µs common-mode transient immunity, and selectable fail-safe mode (low-default output). The device uses internal 2 µA pull-ups on enable pins and requires only 0.1 µF bypass capacitors per supply rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Channels | 5 unidirectional channels (VDD1 → VDD2 only; 0 inputs on output side) |
| Isolation Rating | 5 kVRMS reinforced insulation (UL, VDE, CQC certified; WB SOIC-16 package) |
| Max Data Rate | 150 Mbps - supports high-speed serial interfaces including SPI, RS-485, and isolated ADC/DAC links |
| Propagation Delay | ≤10 ns - enables precise timing-critical applications such as motor control gate drivers and real-time feedback loops |
| Supply Voltage | 2.5–5.5 V on both VDD1 and VDD2 - allows interoperability with 3.3 V and 5 V logic domains |
| Fail-Safe Default | Low-output state during input-side power loss - ensures safe deactivation of downstream circuitry |
| Power @ 100 Mbps | 5.5 mA per channel @ 5 V - enables low-power system design without sacrificing speed |
Pinout & Package
SI8655BB-AS1R is housed in a RoHS-compliant 16-pin narrow-body SOIC (NB SOIC-16) package with 7.5 mm creepage/clearance and reinforced insulation rating. Pin assignments follow the Si8655-specific layout defined in Skyworks datasheet Section 5.2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Input-side power supply | Supplies power to transmitter side; accepts 2.5–5.5 V; requires 0.1 µF bypass capacitor to GND1 |
| GND1 | Input-side ground reference | Return path for VDD1; must be separated from GND2 by isolation barrier |
| A1–A5 | Input signals (VDD1 side) | Five digital inputs with Schmitt-trigger thresholds (VT+ = 1.67 V typ, VT– = 1.23 V typ) |
| VDD2 | Output-side power supply | Supplies power to receiver side; independent 2.5–5.5 V rail; requires 0.1 µF bypass capacitor to GND2 |
| GND2 | Output-side ground reference | Return path for VDD2; galvanically isolated from GND1 |
| B1–B5 | Isolated output signals (VDD2 side) | Five CMOS outputs with 50 Ω nominal impedance; drive capability: VOH ≥ VDD2 – 0.4 V @ –4 mA, VOL ≤ 0.4 V @ 4 mA |
| EN | Output-enable control | Active-high enable for all B1–B5 outputs; internally pulled up to VDD2 via 2 µA current source; drives outputs to high-Z when low |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation barrier | Eliminates LED aging and temperature drift; enables >60-year lifetime at rated working voltage |
| Schmitt-trigger inputs | 0.44 V typical hysteresis improves noise margin in electrically noisy industrial environments |
| Tri-state output control | Single EN pin disables all five outputs simultaneously into high-impedance state - simplifies bus arbitration and power sequencing |
| AEC-Q100 qualified | Qualified for automotive applications including battery management systems and on-board chargers (–40 °C to +125 °C) |
| Reinforced 5 kVRMS isolation | Meets IEC 60950-1, IEC 62368-1, and IEC 60601-1 requirements - suitable for medical and industrial safety-critical designs |
Applications
| Motor Control Systems | Isolated Power Supply Monitoring |
|---|---|
|
Use Scenario: Gate driver signal isolation in three-phase inverters for EV traction motors and industrial servo drives. IC Role / Device Role / Timing Role: Transmits PWM signals across isolation barrier with <10 ns propagation delay and <2 ns skew between channels to maintain phase alignment. Use Value: Enables precise synchronous switching of high-side and low-side IGBTs/MOSFETs while preventing ground-loop faults and EMI coupling. |
Use Scenario: Isolating voltage/current feedback signals from secondary-side sensing circuits in isolated DC-DC converters. IC Role / Device Role / Timing Role: Five-channel unidirectional link carries analog-to-digital converter outputs and status flags across primary-secondary boundary. Use Value: Maintains 150 Mbps throughput for fast loop response while meeting reinforced 5 kVRMS safety requirements for SELV compliance. |
| Battery Management Systems (BMS) | Industrial PLC I/O Modules |
|
Use Scenario: Cell voltage monitoring and pack-level communication isolation in automotive-grade lithium-ion BMS stacks. IC Role / Device Role / Timing Role: Provides galvanic separation between high-voltage battery stack (up to 1000 V) and low-voltage MCU domain. Use Value: AEC-Q100 qualification and fail-safe low-default output ensure safe shutdown during power interruption or fault conditions. |
Use Scenario: Digital input/output isolation in modular programmable logic controller backplanes handling 24 V DC field signals. IC Role / Device Role / Timing Role: Replaces optocouplers in discrete I/O modules with five independent channels per device for compact board layout. Use Value: Reduces power consumption by >50% vs legacy optocouplers at 1 Mbps while maintaining >50 kV/µs CMTI for factory floor noise immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8655BB-IS1 | Industrial-grade (–I suffix); identical electrical specs and pinout; lacks AEC-Q100 qualification and automotive PPAP support | Not approved for automotive production; suitable for industrial automation where extended temperature range suffices | Select SI8655BB-IS1 for cost-sensitive non-automotive designs requiring same performance and 5 kVRMS isolation |
| ADUM141D1BRZ | Analog Devices quad-channel isolator; 4 channels only; 100 Mbps max; 2.5 kVRMS isolation; different pinout and enable behavior | Limited channel count requires two devices for five-signal isolation; lower isolation rating restricts use in high-voltage systems | Choose ADUM141D1BRZ only if existing design uses ADI's iCoupler platform and four-channel capacity is sufficient |
Compared with SI8655BB-IS1, SI8655BB-AS1R adds automotive qualification and traceable PPAP documentation without changing footprint or functionality; versus ADUM141D1BRZ, it delivers higher channel density, faster data rate, and reinforced 5 kVRMS isolation in a drop-in compatible SOIC-16 package.
Availability
SI8655BB-AS1R is available at Aetrix Electronics and suitable for battery management systems, motor control inverters, and isolated power supply monitoring requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle availability.
Supply support for SI8655BB-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 analog and mixed-signal connectivity solutions, with leadership in RF, timing, and isolation technologies.
The Si865x family was designed specifically for high-reliability industrial and automotive isolation applications demanding low power, high speed, long life, and safety certification - targeting systems where legacy optocouplers fall short in performance and longevity.
FAQ
What is the isolation rating and safety certification status of SI8655BB-AS1R?
SI8655BB-AS1R provides 5 kVRMS reinforced isolation and is certified to UL 1577, VDE 0884-10, CSA 5A, and CQC GB4943.1 standards. These certifications validate its suitability for safety-critical applications including medical equipment, industrial motor drives, and automotive battery management systems where reinforced insulation is mandated.
Does SI8655BB-AS1R require external components for basic operation?
SI8655BB-AS1R requires only two 0.1 µF ceramic bypass capacitors - one between VDD1 and GND1, and another between VDD2 and GND2 - placed adjacent to the package. No external pull-ups, level shifters, or initialization firmware are needed, as the device powers up cleanly with no start-up sequence required.
How does the fail-safe mode function in SI8655BB-AS1R?
In SI8655BB-AS1R, the fail-safe mode defaults all five outputs (B1–B5) to logic low when the input-side supply (VDD1) is unpowered but the output-side supply (VDD2) remains active. This behavior is fixed by part number ordering and ensures predictable, safe shutdown of downstream circuitry during input power loss.
What is the maximum data rate supported by SI8655BB-AS1R, and how is timing performance characterized?
SI8655BB-AS1R supports up to 150 Mbps per channel. Its timing is specified with 8.0 ns typical propagation delay (tPLH/tPHL), 0.5 ns typical channel-to-channel skew, and 2 ns typical propagation delay skew between units - enabling deterministic, low-jitter signal transmission in time-critical control loops.
Is SI8655BB-AS1R pin-compatible with other members of the Si865x family?
SI8655BB-AS1R shares the same NB SOIC-16 pinout and electrical interface with all Si8655 variants (e.g., SI8655BA-AS, SI8655EB-AS), but differs from Si8650/Si8651/Si8652 in channel directionality (5-input/0-output vs. mixed input/output configurations). Direct substitution is valid only within the Si8655 subgroup.
SI8655BB-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:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 5
- Inputs - Side 1/Side 2:
- 5/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- 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
SI8655BB-AS1R FAQ
1.How can I place an order for SI8655BB-AS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8655BB-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 SI8655BB-AS1R reliable?
The price and inventory of SI8655BB-AS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8655BB-AS1R is usually 5 days.
3.What payment methods are accepted for SI8655BB-AS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8655BB-AS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8655BB-AS1R?
SI8655BB-AS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8655BB-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 SI8655BB-AS1R?
For technical support, including SI8655BB-AS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8655BB-AS1R requirements.
6.How does Aetrix verify that SI8655BB-AS1R is sourced from the original manufacturer or authorized distributors?
All SI8655BB-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 SI8655BB-AS1R meets industry standards.
7.What is the process for return or replacement of SI8655BB-AS1R?
All SI8655BB-AS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8655BB-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 SI8655BB-AS1R part is unused and in its original packaging.
Return procedure for SI8655BB-AS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8655BB-AS1R 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
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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