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Skyworks Solutions Inc. SI86S642EC-IS1
- Part No.:
- SI86S642EC-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S642EC-IS1.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 4 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:2,385
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Product details
Overview
SI86S642EC-IS1 from Skyworks Solutions is a 4-channel reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier, supporting up to 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating. It operates from 2.25–5.5 V supplies on both sides and is qualified to AEC-Q100 for automotive traction inverters and battery management systems.
For engineers reviewing the SI86S642EC-IS1 datasheet, SI86S642EC-IS1 pinout, SI86S642EC-IS1 application, or SI86S642EC-IS1 equivalent, this page delivers verified specifications, validated pin functions, confirmed automotive-grade operation, and real-world use context for isolated SPI, motor control interfaces, and high-noise industrial power converters.
Technical Context
The SI86S642EC-IS1 implements RF-based on/off keying modulation across a monolithic silicon dioxide isolation barrier, eliminating startup initialization and enabling deterministic timing without clock recovery circuits. Its architecture supports independent undervoltage lockout (UVLO) and reset monitoring on both sides (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO hysteresis of 105–160 mV.
It features Schmitt-trigger + CMOS threshold inputs for noise immunity, tri-state outputs controlled by EN1/EN2 pins, and selectable fail-safe mode (default-high or default-low output during unpowered input). The device includes 36 ns input deglitch filtering-confirmed for Si86S64x family-and meets IEC 60747-17 reinforced insulation requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI without external clock forwarding. |
| Propagation delay | 10 ns typical - enables tight timing budgets in motor gate driver feedback loops and ADC sampling synchronization. |
| Isolation rating | 6000 VRMS - certified per UL 1577 for 1-minute withstand; enables use in 1000 VDC+ DC-link monitoring applications. |
| Supply voltage | 2.25–5.5 V per side - allows direct interface with 3.3 V microcontrollers and 5 V analog front-ends without level shifters. |
| Operating temperature | –40 to 125 °C - qualified per AEC-Q100 Grade 1, suitable for under-hood automotive and industrial ambient environments. |
| CMTI | 100 kV/µs minimum - ensures robust operation in fast-switching SiC/GaN inverter gate drive circuits with high dv/dt noise. |
| Input deglitch | 36 ns filter - suppresses sub-36 ns transients from PWM noise or ESD coupling, preventing false edge detection. |
Pinout & Package
SI86S642EC-IS1 is housed in a WB SOIC-16 (wide-body small-outline integrated circuit) package with 16 leads, 7.5 mm creepage/clearance, and reinforced insulation structure optimized for 6000 VRMS isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A supply pair | Power and ground for channel inputs A1–A4; independent of Side B, enabling dual-supply level translation. |
| A1–A4 | Side A digital I/O | Four bidirectional isolated channels; each supports configurable direction via external logic or enable control. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance state when low, enabling bus sharing. |
| VDD2, GND2 | Side B supply pair | Independent power domain for outputs B1–B4; supports galvanic separation between controller and power stage. |
| B1–B4 | Side B digital I/O | Isolated mirror of A1–A4; maintains signal integrity across 6000 VRMS barrier with <3.5 ns pulse width distortion. |
| EN2 | Side B output enable | Active-high control: places B-side outputs in tri-state, critical for multi-master isolated communication buses. |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation | Eliminates LED aging and temperature drift of optocouplers; provides stable 10 ns propagation delay over full temperature range. |
| Reinforced IEC 60747-17 rating | Validated barrier design meets medical (60601-1) and industrial (62368-1) safety standards without external components. |
| Selectable fail-safe mode | Factory-configured default-high or default-low output during VDD1 loss-prevents undefined states in critical shutdown paths. |
| 36 ns input deglitch filter | Hardware-level noise rejection on all four channels; removes switching noise from adjacent power stages without firmware overhead. |
| AEC-Q100 qualification | Automotive-grade process flow, PPAP support, and IMDS/CAMDS compliance-enables direct use in OBC and BMS designs. |
Applications
| Motor Control Feedback | Isolated SPI Interface |
|---|---|
|
Use Scenario: Real-time current/voltage sensing in 3-phase inverter legs with SiC MOSFETs switching at >100 kHz. IC Role / Device Role / Timing Role: Isolates ADC/DAC serial data and control signals between MCU and isolated analog front-end, maintaining <10 ns timing alignment. Use Value: Enables precise field-oriented control (FOC) by preserving sub-100 ns timing margins between gate drive and current sampling. |
Use Scenario: SPI communication between host MCU and isolated ADC (e.g., AD7403) or isolated DAC in high-voltage battery monitoring. IC Role / Device Role / Timing Role: Provides galvanically isolated, full-duplex SPI data path with separate chip select and clock lines across isolation barrier. Use Value: Eliminates ground loop errors and common-mode transients that corrupt 16-bit ADC readings in 800 V battery packs. |
| Traction Inverter Gate Drive | Onboard Charger Control |
|
Use Scenario: Isolating PWM signals and fault feedback from gate driver ICs (e.g., ISO5852S) to MCU in EV traction inverters. IC Role / Device Role / Timing Role: Transmits high-frequency PWM edges and DESAT fault signals across 6000 VRMS barrier with <3.5 ns pulse width distortion. Use Value: Prevents shoot-through and overcurrent damage by ensuring synchronized, jitter-free gate drive enable/disable across all six half-bridges. |
Use Scenario: Isolating control signals between primary-side PFC controller and secondary-side LLC controller in bi-directional OBCs. IC Role / Device Role / Timing Role: Carries phase-shift commands, voltage reference setpoints, and fault status across reinforced insulation barrier. Use Value: Maintains functional safety integrity (ASIL-B) while enabling precise 100+ kHz power stage coordination without optical latency. |
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 AEC-Q100 qualification; higher 13 ns propagation delay. | Targeted at industrial automation, not automotive; lacks 36 ns deglitch filter and reinforced IEC 60747-17 certification. | Choose for cost-sensitive non-automotive systems where 5000 VRMS and 100 Mbps suffice. |
| ISO6741QDWR | 4-channel, 50 Mbps, 5000 VRMS, SOIC-16; AEC-Q100 qualified; no deglitch filter; 16 ns propagation delay. | Designed for lower-speed automotive body electronics; insufficient for 150 Mbps SPI or fast gate drive timing. | Choose only if system data rate ≤50 Mbps and CMTI ≥50 kV/µs is acceptable. |
Compared with ADUM4402BRWZ and ISO6741QDWR, SI86S642EC-IS1 delivers 50% higher data rate, 6000 VRMS isolation, AEC-Q100 Grade 1 qualification, and hardware deglitching-making it the only option qualified for high-speed, safety-critical EV powertrain applications.
Availability
SI86S642EC-IS1 is available at Aetrix Electronics and suitable for automotive traction inverters, onboard chargers, and isolated ADC/DAC interfaces requiring stable component supply across extended product lifecycles.
Supply support for SI86S642EC-IS1 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 leader in high-reliability analog semiconductors, specializing in RF, timing, and isolation solutions for automotive, industrial, and communications markets.
The Si86S6xx family was engineered specifically for high-noise, high-voltage power conversion systems-delivering reinforced isolation, AEC-Q100 qualification, and RF-based timing stability where legacy optocouplers and capacitive isolators fall short.
FAQ
What is the isolation voltage rating of the SI86S642EC-IS1?
The SI86S642EC-IS1 is rated for 6000 VRMS isolation per UL 1577 for 1 minute, with reinforced insulation certified to IEC 60747-17. This rating is validated for the WB SOIC-16 package and applies across the full operating temperature range of –40 to 125 °C. SI86S642EC-IS1 achieves this via a monolithic silicon dioxide barrier, not discrete components or external potting.
Does the SI86S642EC-IS1 support fail-safe output configuration?
Yes, the SI86S642EC-IS1 offers factory-selectable fail-safe mode: either default-high or default-low output state when the input-side supply (VDD1) is unpowered but the output-side supply (VDD2) remains active. This behavior is defined in Table 4 of the datasheet and is implemented in silicon-not via external pull resistors-ensuring deterministic behavior during brownout conditions.
What is the purpose of the 36 ns input deglitch filter in the SI86S642EC-IS1?
The 36 ns hardware deglitch filter in the SI86S642EC-IS1 blocks input pulses shorter than 36 ns, rejecting fast transients from switching noise, ESD coupling, or crosstalk. Confirmed for the Si86S64x family, this filter prevents false edge detection in motor control and power supply feedback loops without adding software latency or external RC networks.
How does the SI86S642EC-IS1 handle power supply sequencing during startup?
The SI86S642EC-IS1 uses independent UVLO and reset monitors on VDD1 and VDD2. Each side enters UVLO below ~2.05 V and exits above ~2.18 V, with 105–160 mV hysteresis. If VDD drops below ~1.7 V (RSTB–), a full internal reset occurs. Startup time from unpowered to valid output is 0.3 ms, with 100 kΩ pulldown active until stabilization-ensuring predictable behavior in asymmetric power-up scenarios.
Is the SI86S642EC-IS1 pin-compatible with other devices in the Si86S6xx family?
Yes, the SI86S642EC-IS1 shares identical WB SOIC-16 pinout with all Si86S64x variants (e.g., SI86S640, SI86S641), including A1–A4, B1–B4, EN1, EN2, VDD1/GND1, and VDD2/GND2 assignments. Differences are internal-such as fail-safe default state or deglitch enable-and do not affect PCB layout, enabling drop-in replacement within the same channel count and package.
SI86S642EC-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
SI86S642EC-IS1 FAQ
1.How can I place an order for SI86S642EC-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S642EC-IS1 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 SI86S642EC-IS1 reliable?
The price and inventory of SI86S642EC-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S642EC-IS1 is usually 5 days.
3.What payment methods are accepted for SI86S642EC-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S642EC-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S642EC-IS1?
SI86S642EC-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S642EC-IS1 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 SI86S642EC-IS1?
For technical support, including SI86S642EC-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S642EC-IS1 requirements.
6.How does Aetrix verify that SI86S642EC-IS1 is sourced from the original manufacturer or authorized distributors?
All SI86S642EC-IS1 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 SI86S642EC-IS1 meets industry standards.
7.What is the process for return or replacement of SI86S642EC-IS1?
All SI86S642EC-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI86S642EC-IS1, 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 SI86S642EC-IS1 part is unused and in its original packaging.
Return procedure for SI86S642EC-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S642EC-IS1 Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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