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Skyworks Solutions Inc. SI86S642BC-IS1R
- Part No.:
- SI86S642BC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S642BC-IS1R.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 4 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:2,220
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Product details
Overview
SI86S642BC-IS1R from Skyworks Solutions is a 4-channel, reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier. It supports up to 150 Mbps data rate, features 10 ns typical propagation delay, 6000 VRMS isolation rating, and operates from 2.25–5.5 V on both sides. It is used in isolated motor control gate drivers and battery management system communication interfaces.
For engineers reviewing the SI86S642BC-IS1R datasheet, SI86S642BC-IS1R pinout, SI86S642BC-IS1R application, or SI86S642BC-IS1R equivalent, key selection criteria include reinforced IEC 60747-17 certification, fail-safe default-high/low output option, input deglitch filtering (36 ns), and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The SI86S642BC-IS1R implements RF-based on/off keying modulation across a monolithic silicon dioxide isolation barrier-eliminating startup initialization and enabling robust noise immunity. Its architecture includes Schmitt-trigger inputs with CMOS thresholds, tri-state outputs controlled by EN1/EN2, and selectable fail-safe mode (default high or low) determined at ordering.
It supports independent supply domains (VDD1/GND1 and VDD2/GND2), features undervoltage lockout (UVLO) with 2.10–2.25 V rising threshold per side, and integrates 100 kΩ weak pulldown on unpowered outputs. The device meets transient immunity ≥100 kV/µs and operates across –40 to +125 °C ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI buses |
| Isolation Rating | 6000 VRMS - enables use in reinforced insulation systems per IEC 60747-17 and UL 1577 |
| Propagation Delay | 10 ns typical - ensures tight timing alignment in real-time control loops (e.g., motor phase commutation) |
| Supply Voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level shifters |
| Input Deglitch Filter | 36 ns - rejects sub-36 ns noise pulses common in noisy industrial environments (e.g., PWM switching nodes) |
| Temperature Range | –40 to +125 °C - qualified for under-hood automotive and industrial power electronics applications |
| CMTI | ≥100 kV/µs - prevents false triggering during fast dv/dt transients in inverters and SMPS |
Pinout & Package
SI86S642BC-IS1R is housed in a WB SOIC-16 (wide-body small-outline integrated circuit) package with 16 pins and creepage/clearance optimized for 6000 VRMS reinforced isolation. Pin 1 is marked with a dot; pin numbering follows standard SOIC convention (counterclockwise from top-left corner).
| 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 |
| A1–A4 | Side A digital I/O | Four isolated input/output channels on primary side; Schmitt-trigger inputs with 0.3×VDD1/0.7×VDD1 thresholds |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low |
| VDD2, GND2 | Side B power domain | Independent supply for secondary side; enables galvanic separation of ground domains |
| B1–B4 | Side B digital I/O | Four isolated channels mirrored to A1–A4; output impedance ≈50 Ω for controlled-impedance PCB routing |
| EN2 | Side B output enable | Active-high control: places all B-side outputs in tri-state when low |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot sequence delays - outputs become valid within 0.3 ms of VDD stabilization |
| Selectable fail-safe mode | Ordering option determines default output state (high or low) during VDD1 loss while VDD2 remains powered |
| Tri-state outputs with enable | EN1/EN2 provide single-pin control over all four channels per side - simplifies bus arbitration in multi-master systems |
| Reinforced safety certification | UL 1577, VDE 60747-17, CSA 62368-1, CQC GB4943.1 - satisfies end-equipment requirements for medical and EV traction inverters |
| AEC-Q100 Grade 1 | Qualified for automotive applications up to +125 °C junction temperature - supports onboard chargers and BMS modules |
Applications
| Motor Control Gate Driver Interface | Isolated Battery Management System (BMS) |
|---|---|
Use Scenario: Isolating PWM signals between MCU and high-voltage IGBT/SiC gate drivers in 3-phase inverters. IC Role / Device Role / Timing Role: Bidirectional digital isolator transmitting gate enable/disable and fault feedback across 6000 VRMS barrier. Use Value: 10 ns propagation delay ensures precise timing alignment between phase legs; 100 kV/µs CMTI prevents false turn-on during fast dv/dt switching events. | Use Scenario: Communicating cell voltage and temperature data from high-side monitoring ICs to low-side host controller in EV battery packs. IC Role / Device Role / Timing Role: 4-channel isolator carrying isolated UART or SPI traffic between stacked BMS boards operating at different potentials. Use Value: AEC-Q100 qualification guarantees reliability under thermal cycling; 36 ns input deglitch filter suppresses noise from adjacent high-current discharge paths. |
| Industrial Isolated ADC/DAC Interface | Onboard Charger (OBC) Control Loop |
Use Scenario: Isolating analog front-end digital control lines (e.g., SPI clock, chip select, data) between precision ADCs and host processors in PLC I/O modules. IC Role / Device Role / Timing Role: High-speed digital isolator preserving signal integrity for 1 MSPS+ sampling systems requiring deterministic latency. Use Value: 150 Mbps capability supports oversampling and daisy-chained configurations; wide 2.25–5.5 V supply range accommodates mixed-voltage sensor subsystems. | Use Scenario: Isolating feedback signals (voltage, current, temperature) and control commands (enable, fault reset) between AC/DC and DC/DC stages in automotive OBCs. IC Role / Device Role / Timing Role: Reinforced isolator enabling safe communication across functional safety boundaries (ASIL-B compliant designs). Use Value: UL/VDE reinforced certification satisfies IEC 62109 and ISO 26262 requirements; –40 to +125 °C operation covers full vehicle thermal envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRIZ | 4-channel, 150 Mbps, 3750 VRMS isolation, 12 ns propagation delay, no deglitch filter | Lacks 6000 VRMS rating and 36 ns input filtering - unsuitable for reinforced insulation or high-noise motor drive environments | Consider only for cost-sensitive non-automotive industrial applications where 3750 VRMS suffices and noise immunity is less critical |
| ISO6741QDR | 4-channel, 50 Mbps, 5000 VRMS, 16 ns propagation delay, no fail-safe option, no deglitch filter | Lower speed and isolation rating; not AEC-Q100 qualified - limited to consumer or light-industrial use | Only appropriate for legacy designs with <50 Mbps bandwidth needs and no automotive qualification requirement |
Compared with ADUM140D0BRIZ and ISO6741QDR, SI86S642BC-IS1R delivers higher isolation (6000 VRMS), faster timing (10 ns), built-in noise filtering (36 ns), and automotive qualification - making it the sole choice for ASIL-B OBCs and high-reliability motor drives.
Availability
SI86S642BC-IS1R is available at Aetrix Electronics and suitable for motor control gate driver interfaces, isolated battery management systems, and onboard charger control loops requiring stable component supply and long-term lifecycle support.
Supply support for SI86S642BC-IS1R 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 Si86S6xx family was designed specifically for high-reliability, high-speed digital isolation in automotive, industrial, and medical systems - emphasizing reinforced safety certification, low propagation delay, and noise-immune operation.
FAQ
What is the isolation voltage rating of the SI86S642BC-IS1R?
The SI86S642BC-IS1R has a reinforced isolation rating of 6000 VRMS per UL 1577 for 1 minute, certified to IEC 60747-17, CSA 62368-1, and CQC GB4943.1. This rating applies to the WB SOIC-16 package and enables use in safety-critical applications such as EV traction inverters and medical power supplies where reinforced insulation is mandated.
Does the SI86S642BC-IS1R require external startup configuration or initialization?
No, the SI86S642BC-IS1R does not require external startup configuration or initialization. Its RF-based modulation architecture ensures outputs become valid within 0.3 ms after VDD1 and VDD2 rise above UVLO thresholds. The device enters normal operation automatically - no firmware handshake, clock training, or register programming is needed for SI86S642BC-IS1R deployment.
What is the purpose of the EN1 and EN2 pins on the SI86S642BC-IS1R?
The EN1 and EN2 pins on the SI86S642BC-IS1R are active-high output enable controls for Side A and Side B, respectively. When pulled low, they place all four corresponding side outputs into high-impedance (tri-state) mode - enabling bus sharing, hot-swap capability, and power sequencing control without affecting the isolation barrier integrity of SI86S642BC-IS1R.
Is the SI86S642BC-IS1R qualified for automotive applications?
Yes, the SI86S642BC-IS1R is AEC-Q100 Grade 1 qualified (–40 to +125 °C) and supports AIAG-compliant PPAP documentation. It is specifically designed for automotive systems including onboard chargers, battery management systems, and traction inverters - meeting stringent reliability, thermal, and safety requirements defined for SI86S642BC-IS1R in automotive-grade production flows.
How does the 36 ns input deglitch filter function in the SI86S642BC-IS1R?
The 36 ns input deglitch filter in the SI86S642BC-IS1R blocks any input pulse narrower than 36 ns, preventing noise-induced false transitions. Valid signals pass through with a fixed 36 ns delay. This feature is factory-configured for SI86S642BC-IS1R and improves robustness in electrically noisy environments such as motor drive PCBs near IGBT switching nodes or high-current battery interconnects.
SI86S642BC-IS1R 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:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 14ns, 14ns
- Pulse Width Distortion (Max):
- 2ns
- Rise / Fall Time (Typ):
- 2.5ns, 2.5ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86S642BC-IS1R FAQ
1.How can I place an order for SI86S642BC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642BC-IS1R 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 SI86S642BC-IS1R reliable?
The price and inventory of SI86S642BC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642BC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86S642BC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642BC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642BC-IS1R?
SI86S642BC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642BC-IS1R 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 SI86S642BC-IS1R?
For technical support, including SI86S642BC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642BC-IS1R requirements.
6.How does Aetrix verify that SI86S642BC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86S642BC-IS1R 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 SI86S642BC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86S642BC-IS1R?
All SI86S642BC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642BC-IS1R, 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 SI86S642BC-IS1R part is unused and in its original packaging.
Return procedure for SI86S642BC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642BC-IS1R 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
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
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ISO7741FDWR
Texas Instruments
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