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Skyworks Solutions Inc. SI86S642BE-AS2R
- Part No.:
- SI86S642BE-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S642BE-AS2R.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,283
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Product details
Overview
SI86S642BE-AS2R from Skyworks Solutions is a 4-channel, reinforced-isolation digital isolator with bidirectional signal capability, 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating. It operates across 2.25–5.5 V supply rails on both sides and supports fail-safe default-high output configuration. It is used in isolated motor control gate drivers and battery management system communication interfaces.
For engineers reviewing the SI86S642BE-AS2R datasheet, SI86S642BE-AS2R pinout, SI86S642BE-AS2R application, or SI86S642BE-AS2R equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative parts for industrial and automotive isolation design.
Technical Context
The SI86S642BE-AS2R implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity. Its architecture includes Schmitt-trigger inputs, CMOS thresholds, and independent undervoltage lockout (UVLO) on both sides with 2.10–2.25 V rising threshold and 1.98–2.12 V falling threshold.
It features tri-state outputs controlled by EN1/EN2 pins, selectable fail-safe mode (default high), and integrated input deglitch filtering with 36 ns rejection window. The device supports dual-supply operation with side-A and side-B power domains fully decoupled and independently monitored.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 150 Mbps - supports high-speed SPI, isolated ADC/DAC interfaces, and real-time motor control feedback loops. |
| Propagation Delay | 10 ns typical - enables tight timing budgets in closed-loop systems like traction inverters and servo drives. |
| Isolation Rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for industrial and automotive safety-critical applications. |
| Supply Voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic families without level-shifting circuitry. |
| Operating Temperature | –40 °C to +125 °C - qualified for under-hood automotive use and industrial ambient environments. |
| Pulse Width Distortion | 3.5 ns typical - ensures minimal duty-cycle degradation in clock-forwarding or PWM isolation applications. |
| Transient Immunity | ≥100 kV/µs - suppresses fast common-mode transients in high-di/dt power converter environments. |
Pinout & Package
SI86S642BE-AS2R is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS isolation. Pin assignments are defined per Figure 2 of the datasheet for Si86S64x/L4x family.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power domain | Supplies and grounds the input-side logic; requires 0.1 µF + 10 µF bypass capacitors placed adjacent to pins. |
| A1–A4 | Side A digital I/O | Four bidirectional isolated channels; compatible with CMOS/Schmitt-trigger logic levels and support deglitch filtering. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance state when low, enabling bus sharing or power-down sequencing. |
| VDD2, GND2 | Side B power domain | Independent supply domain for output-side logic; electrically and galvanically isolated from Side A. |
| B1–B4 | Side B digital I/O | Corresponding isolated outputs/inputs mirroring A1–A4; maintains signal integrity across isolation barrier. |
| EN2 | Side B output enable | Active-high control: places all B-side outputs in tri-state, allowing safe hot-plug or multi-device bus arbitration. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF-modulated architecture eliminates boot delay and configuration registers - output follows input immediately after UVLO exit. |
| Selectable fail-safe mode | Ordering option "E" configures default-high output during unpowered input condition - critical for safe shutdown in BMS fault detection. |
| Input deglitch filter | 36 ns pulse rejection window removes sub-36 ns noise spikes - prevents false triggering in noisy motor drive or inverter gate driver circuits. |
| Tri-state outputs with enable | EN1/EN2 pins provide synchronous, side-specific output disable - enables shared-bus topologies and reduces contention in multi-isolator systems. |
| AEC-Q100 qualified | Qualified to Grade 0 (–40 °C to +150 °C junction) - validated for automotive onboard chargers, traction inverters, and battery pack monitoring. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stacks for HVAC compressors and industrial pumps. IC Role / Device Role / Timing Role: Bidirectional signal isolator for PWM gate control and analog-to-digital converter (ADC) readback across high dv/dt barriers. Use Value: 10 ns propagation delay preserves PWM edge alignment; 6000 VRMS rating withstands >1 kV transient surges in 400 V DC bus environments. |
Use Scenario: Isolating cell voltage measurement and balancing command signals between MCU and analog front-end in EV battery packs. IC Role / Device Role / Timing Role: Reinforced-isolation interface for daisy-chained BMS ICs communicating over isolated UART or SPI. Use Value: AEC-Q100 qualification ensures reliability at 125 °C ambient; default-high fail-safe prevents unintended cell discharge during MCU reset. |
| Isolated Switch-Mode Power Supply | Medical Isolated Data Acquisition |
|
Use Scenario: Feedback path isolation in 1–3 kW AC/DC converters for server PSUs and telecom rectifiers. IC Role / Device Role / Timing Role: High-speed digital isolator for optocoupler replacement in secondary-side controller-to-primary-side PWM modulator links. Use Value: 150 Mbps data rate supports fast error reporting and dynamic load regulation; 100 kV/µs CMTI rejects switching noise from GaN/FET transitions. |
Use Scenario: Isolating ECG/EEG front-end ADC outputs from patient-connected analog circuits to digital processing unit. IC Role / Device Role / Timing Role: Reinforced-isolation channel for digitized biosignal transmission meeting IEC 60601-1 creepage/clearance and leakage current limits. Use Value: UL/CSA/VDE certified reinforced insulation eliminates need for external isolation components; 3.5 ns pulse width distortion preserves waveform fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4402BRWZ | 4-channel, 100 Mbps, 5000 VRMS, SOIC-16, no deglitch filter, 15 ns propagation delay | Lacks 36 ns input deglitch and failsafe default-high option; lower isolation rating limits use in 600 V+ systems | Choose when cost sensitivity outweighs need for 6000 VRMS or fail-safe behavior in non-automotive industrial designs. |
| ISO6741FDWR | 4-channel, 50 Mbps, 5000 VRMS, SOIC-16, no sleep mode, 12 ns propagation delay | Lower data rate and no selectable fail-safe mode; not AEC-Q100 qualified | Prefer for legacy 50 Mbps SPI isolation where automotive qualification and high-speed timing are not required. |
Compared with ADUM4402BRWZ and ISO6741FDWR, SI86S642BE-AS2R provides higher isolation (6000 vs. 5000 VRMS), faster data rate (150 vs. ≤100 Mbps), integrated deglitch filtering, and automotive-grade qualification - making it optimal for next-generation EV and industrial power systems demanding robustness and timing precision.
Availability
SI86S642BE-AS2R is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management, and isolated switch-mode power supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SI86S642BE-AS2R 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 for high-reliability markets.
The Si86S6xx family was designed specifically for high-noise, safety-critical isolation in automotive traction systems and industrial automation - emphasizing reinforced insulation, AEC-Q100 compliance, and RF-based noise immunity.
FAQ
What is the isolation voltage rating of SI86S642BE-AS2R?
SI86S642BE-AS2R is rated for 6000 VRMS isolation for one minute per UL 1577 and reinforced insulation per IEC 60747-17. This rating applies to the WB SOIC-16 package and is validated for continuous operation in systems with working voltages up to 1000 V RMS. The device meets CSA 62368-1 and VDE 60747-17 safety standards.
Does SI86S642BE-AS2R support fail-safe operation, and how is it configured?
Yes, SI86S642BE-AS2R supports fail-safe operation with default-high output during input-side power loss. This behavior is fixed by the "E" suffix in the part number and does not require external configuration. When VDD1 falls below UVLO– (1.98–2.12 V), outputs B1–B4 remain logic high as long as VDD2 remains powered - a critical feature for safe shutdown in battery management systems.
What is the purpose of the EN1 and EN2 pins on SI86S642BE-AS2R?
The EN1 and EN2 pins on SI86S642BE-AS2R are active-high enable controls for Side A and Side B outputs respectively. When pulled low, they place all corresponding side's I/O pins (A1–A4 or B1–B4) into high-impedance state. This enables bus sharing, reduces standby power, and supports hot-swap or multi-drop isolation architectures without signal contention.
Is SI86S642BE-AS2R suitable for automotive applications?
Yes, SI86S642BE-AS2R is AEC-Q100 qualified (Grade 0) and built using automotive-specific manufacturing flows. It supports operating temperatures from –40 °C to +125 °C ambient, includes reinforced insulation for high-voltage battery systems, and is used in onboard chargers, battery management systems, and traction inverters per Skyworks' automotive application documentation.
What bypass capacitors are required for SI86S642BE-AS2R?
SI86S642BE-AS2R requires two bypass capacitors per supply domain: a 0.1 µF ceramic capacitor and a 10 µF bulk capacitor placed between VDD1/GND1 and VDD2/GND2 respectively. These must be mounted as close as possible to the pins to suppress high-frequency noise and ensure stable operation at 150 Mbps data rates and under fast transient conditions.
SI86S642BE-AS2R 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:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 6000Vrms
- 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
SI86S642BE-AS2R FAQ
1.How can I place an order for SI86S642BE-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642BE-AS2R 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 SI86S642BE-AS2R reliable?
The price and inventory of SI86S642BE-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642BE-AS2R is usually 5 days.
3.What payment methods are accepted for SI86S642BE-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642BE-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642BE-AS2R?
SI86S642BE-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642BE-AS2R 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 SI86S642BE-AS2R?
For technical support, including SI86S642BE-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642BE-AS2R requirements.
6.How does Aetrix verify that SI86S642BE-AS2R is sourced from the original manufacturer or authorized distributors?
All SI86S642BE-AS2R 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 SI86S642BE-AS2R meets industry standards.
7.What is the process for return or replacement of SI86S642BE-AS2R?
All SI86S642BE-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642BE-AS2R, 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 SI86S642BE-AS2R part is unused and in its original packaging.
Return procedure for SI86S642BE-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642BE-AS2R Tags
-
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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