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Skyworks Solutions Inc. SI86S642HC-IS1R
- Part No.:
- SI86S642HC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S642HC-IS1R.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 4 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:2,471
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Product details
Overview
SI86S642HC-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 supplies on both sides. It is used in isolated ADC/DAC interfaces and motor control gate driver circuits requiring high CMTI and fail-safe operation.
For engineers reviewing the SI86S642HC-IS1R datasheet, SI86S642HC-IS1R pinout, SI86S642HC-IS1R application, or SI86S642HC-IS1R equivalent, this page delivers verified specifications, validated pin functions, automotive-grade safety certifications (AEC-Q100, IEC 60747-17), and real-world use context for industrial and EV power systems design.
Technical Context
The SI86S642HC-IS1R implements RF-based on/off keying modulation across a monolithic silicon isolation barrier, eliminating startup initialization and enabling deterministic timing. Its architecture includes Schmitt-trigger inputs with 0.15×VDD hysteresis and CMOS-compatible thresholds for robust noise immunity.
It supports fail-safe output configuration (default-high or default-low) via ordering option, tri-state outputs controlled by EN1/EN2 pins, and operates across –40 °C to +125 °C ambient. The device meets reinforced insulation requirements per UL 1577 (6000 VRMS), VDE 60747-17, and CSA 62368-1/60601-1.
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 without external clock recovery. |
| Propagation delay | 10 ns typical - enables tight timing budgets in closed-loop motor control and fast ADC sampling systems. |
| Isolation rating | 6000 VRMS - provides reinforced insulation for 400–800 V DC bus systems in onboard chargers and traction inverters. |
| Supply voltage | 2.25–5.5 V per side - allows direct interface with 3.3 V and 5 V logic domains without level-shifting circuitry. |
| CMTI | ≥100 kV/µs - ensures reliable operation in high-dv/dt environments such as SiC/GaN-based power converters. |
| Operating temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial automation applications. |
| Fail-safe mode | Selectable default-high or default-low output - prevents undefined states during supply brownout in safety-critical BMS monitoring paths. |
Pinout & Package
SI86S642HC-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 working voltage. 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 | Side A supply | Provides power to input-side logic and transmitter circuits; requires 0.1 µF + 10 µF bypass capacitors. |
| GND1 | Side A ground | Reference return path for Side A; must be separated from GND2 by ≥8 mm creepage for reinforced insulation compliance. |
| A1–A4 | Side A digital I/O | Four unidirectional input channels; accept 2.25–5.5 V logic levels with Schmitt-trigger hysteresis. |
| EN1 | Side A output enable | Active-high control: drives all Side A outputs into high-impedance state when low, enabling shared-bus configurations. |
| Isolation Barrier | Internal dielectric | Semiconductor-based barrier providing 6000 VRMS withstand and reinforced insulation per IEC 60747-17. |
| B1–B4 | Side B digital I/O | Four unidirectional output channels; drive 50 Ω nominal impedance loads with VOH ≥ VDD2–0.4 V and VOL ≤ 0.4 V. |
| EN2 | Side B output enable | Active-high control: places all Side B outputs in tri-state, supporting isolated bus arbitration and hot-swap capability. |
| GND2 | Side B ground | Return path for isolated-side logic; galvanically separated from GND1 to maintain isolation integrity. |
| VDD2 | Side B supply | Power source for receiver and output driver circuits; independent of VDD1 for dual-supply system partitioning. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot-time delays and configuration sequences-output behavior is deterministic at power-on. |
| Tri-state outputs with enable | EN1/EN2 pins allow dynamic disabling of entire side's outputs, enabling multi-master isolated bus topologies without contention. |
| Reinforced safety certification | UL 1577 (6000 VRMS), VDE 60747-17, CSA 62368-1/60601-1 - satisfies end-equipment requirements for medical, industrial, and automotive isolation barriers. |
| Input deglitch filter | 36 ns pulse rejection - suppresses EMI-induced transients on control lines in noisy motor drive and inverter gate driver environments. |
| AEC-Q100 qualification | Grade 1 (–40 °C to +125 °C) qualification with automotive-specific manufacturing flow - ensures low defectivity for EV battery management systems. |
Applications
| Isolated ADC Interface | Motor Control Gate Driver |
|---|---|
|
Use Scenario: Isolating analog-to-digital converter serial interface (e.g., ADS8688) between high-voltage power stage and low-voltage controller. IC Role / Device Role / Timing Role: Transmits 16-bit conversion results across isolation barrier with <10 ns skew between channels to preserve phase accuracy. Use Value: Enables ±0.5 LSB linearity retention in isolated current sensing while meeting IEC 61000-4-5 surge immunity requirements. |
Use Scenario: Driving high-side and low-side IGBT/SiC MOSFET gates in three-phase inverter leg with shoot-through prevention. IC Role / Device Role / Timing Role: Delivers matched propagation delay (<10 ns) and pulse width distortion (<3.5 ns) to ensure precise dead-time control. Use Value: Prevents cross-conduction failure in 100 kHz+ switching inverters operating at 800 V DC bus voltage. |
| Onboard Charger (OBC) | Battery Management System (BMS) |
|
Use Scenario: Isolating communication between AC/DC PFC controller and DC/DC LLC secondary-side microcontroller in EV OBC. IC Role / Device Role / Timing Role: Carries PWM feedback signals and fault status across 6000 VRMS barrier with 150 Mbps capability for adaptive control loops. Use Value: Supports real-time thermal derating and overvoltage shutdown coordination without latency-induced instability. |
Use Scenario: Isolating cell voltage measurement IC (e.g., BQ79616) from main MCU in high-cell-count EV battery packs. IC Role / Device Role / Timing Role: Transfers daisy-chained ADC data and balancing commands with fail-safe default-low output during MCU reset. Use Value: Guarantees safe open-circuit default state on balancing FET control lines during power sequencing faults. |
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, 15 ns propagation delay, no AEC-Q100 qualification | Limited to industrial temp range (–40 °C to +105 °C); lacks reinforced certification for medical/automotive end-equipment | Choose for cost-sensitive industrial PLCs where 5000 VRMS suffices and automotive qualification is not required. |
| ISO6741QDWR | 4-channel, 50 Mbps, 5000 VRMS, 25 ns propagation delay, AEC-Q100 Grade 1 | Lower speed and higher latency; suitable only for non-time-critical CAN or UART isolation, not SPI/QSPI or gate drive | Choose when system data rate ≤50 Mbps and full 6000 VRMS is unnecessary-reduces BOM cost in lower-power BMS modules. |
Compared with ADUM4402BRWZ and ISO6741QDWR, SI86S642HC-IS1R delivers 50% higher data rate than the latter and 50% lower propagation delay than the former, while uniquely combining AEC-Q100 Grade 1, 6000 VRMS, and 150 Mbps in a single SOIC-16 package for next-generation EV power electronics.
Availability
SI86S642HC-IS1R is available at Aetrix Electronics and suitable for onboard chargers, battery management systems, and isolated ADC/DAC interfaces requiring stable component supply across automotive and industrial production cycles.
Supply support for SI86S642HC-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 high-performance analog and mixed-signal components for wireless, automotive, and industrial markets.
The Si86S6xx family was designed specifically for high-reliability isolation in electric vehicle powertrain systems and industrial automation, emphasizing reinforced safety, high CMTI, and AEC-Q100 compliance.
FAQ
What is the maximum data rate supported by SI86S642HC-IS1R?
SI86S642HC-IS1R supports a maximum data rate of 150 Mbps. This value is specified under recommended operating conditions (VDD = 2.25–5.5 V, TA = –40 °C to +125 °C) and reflects guaranteed performance across temperature and voltage ranges-not just typical or room-temperature values. The 150 Mbps capability enables its use in high-speed isolated SPI, QSPI, and digital encoder interfaces without protocol translation.
Does SI86S642HC-IS1R require external startup configuration?
No, SI86S642HC-IS1R does not require external startup configuration. Its RF-based modulation architecture eliminates initialization sequences or register programming. Outputs enter defined states after UVLO release (~0.3 ms after VDD exceeds 2.18 V), with fail-safe behavior determined solely by the ordering option (default-high or default-low). This simplifies system boot design and improves reliability in safety-critical applications.
What safety certifications apply to SI86S642HC-IS1R?
SI86S642HC-IS1R holds UL 1577 recognition (6000 VRMS for 1 minute), VDE certification to IEC 60747-17 (reinforced insulation), CSA certification to 62368-1 and 60601-1, and CQC approval to GB4943.1. It is also AEC-Q100 qualified (Grade 1). These certifications are verified for the WB SOIC-16 package variant and apply directly to SI86S642HC-IS1R-not inferred from family-level claims.
How does the fail-safe mode function on SI86S642HC-IS1R?
SI86S642HC-IS1R implements fail-safe mode via ordering option: "HC" denotes default-high output, "LC" would denote default-low. When VDD1 is unpowered but VDD2 remains active, outputs B1–B4 hold their configured default state (high or low) rather than floating or entering undefined states. This behavior is hardware-defined and does not rely on external pull resistors or firmware intervention.
Can SI86S642HC-IS1R be used in bidirectional bus isolation?
SI86S642HC-IS1R itself provides four unidirectional channels (A→B). For true bidirectional bus isolation (e.g., I²C or half-duplex SPI), it must be paired with complementary devices or used alongside direction-control logic. The Si86SQ44 variant in the same family supports configurable direction, but SI86S642HC-IS1R does not include DIR or ISO_DIR pins-its channel direction is fixed at manufacture.
SI86S642HC-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):
- 150kV/µs
- Data Rate:
- 10Mbps
- 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:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86S642HC-IS1R FAQ
1.How can I place an order for SI86S642HC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642HC-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 SI86S642HC-IS1R reliable?
The price and inventory of SI86S642HC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642HC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86S642HC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642HC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642HC-IS1R?
SI86S642HC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642HC-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 SI86S642HC-IS1R?
For technical support, including SI86S642HC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642HC-IS1R requirements.
6.How does Aetrix verify that SI86S642HC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86S642HC-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 SI86S642HC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86S642HC-IS1R?
All SI86S642HC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642HC-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 SI86S642HC-IS1R part is unused and in its original packaging.
Return procedure for SI86S642HC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642HC-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
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.
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ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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