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Skyworks Solutions Inc. SI86S641EC-IS1R
- Part No.:
- SI86S641EC-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI86S641EC-IS1R.pdf
- Description:
- 3.75 KVRMS ISOLATOR, 4 UNIDIRECT
- Quantity:
- Payment:
- Shipping:
Inventory:4,210
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Product details
Overview
SI86S641EC-IS1R from Skyworks Solutions is a 4-channel reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier. It delivers DC to 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating in a WB SOIC-16 package. It operates from 2.25–5.5 V supplies on both sides and supports fail-safe default-high output mode - used in isolated ADC interfaces and motor control gate drivers.
For engineers reviewing the SI86S641EC-IS1R datasheet, SI86S641EC-IS1R pinout, SI86S641EC-IS1R application, or SI86S641EC-IS1R equivalent, key selection criteria include reinforced IEC 60747-17 certification, AEC-Q100 qualification for automotive use, Schmitt-trigger + CMOS input thresholds, tri-state outputs with enable, and 36 ns input deglitch filtering (confirmed for Si86S64x family).
Technical Context
The SI86S641EC-IS1R implements RF-based on/off keying modulation across a monolithic silicon dioxide isolation barrier, eliminating startup initialization and enabling robust noise immunity up to 100 kV/µs CMTI. Its architecture supports independent undervoltage lockout (UVLO) and reset monitoring on both sides (VDD1/VDD2), with RSTB– threshold at ~1.7 V and UVLO– at 1.98 V.
It features four isolated bidirectional channels with dedicated EN1/EN2 enable inputs per side, selectable fail-safe output state (default high, per "EC" ordering suffix), and integrated 36 ns input deglitch filters - confirmed for all Si86S64x variants including SI86S641EC-IS1R.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links like isolated SPI and encoder feedback without protocol translation. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for industrial & automotive safety-critical systems. |
| Propagation delay | 10 ns typical - enables tight timing budgets in real-time motor control and power converter feedback loops. |
| 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 on A-side inputs, critical for noisy motor drive or SMPS environments. |
| Fail-safe mode | Default high output - ensures defined logic state during VDD1 loss while VDD2 remains powered (per "EC" suffix). |
| Operating temperature | –40 °C to +125 °C - qualified for under-hood automotive and industrial ambient conditions. |
Pinout & Package
SI86S641EC-IS1R is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS working voltage. Pinout follows Figure 2 (Si86S64x/L4x) in the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A supply pair | Power and ground for primary-side (controller) interface; requires 0.1 µF + 10 µF bypassing. |
| A1–A4 | Side A digital I/O | Bidirectional isolated channels; accept Schmitt-trigger + CMOS thresholds; filtered (36 ns) on input path. |
| EN1 | Side A output enable | Active-high control: drives A-side outputs into high-impedance when low - enables bus sharing and power sequencing. |
| VDD2, GND2 | Side B supply pair | Power and ground for secondary-side (isolated) interface; independent of Side A supply domain. |
| B1–B4 | Side B digital I/O | Corresponding isolated outputs/inputs mirroring A1–A4; maintain signal integrity across barrier. |
| EN2 | Side B output enable | Active-high control: places B-side outputs in high-Z - supports multi-drop isolated buses and safe shutdown. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced IEC 60747-17 rating | Validated barrier withstand capability for functional safety applications in EV traction inverters and medical equipment. |
| AEC-Q100 Grade 1 qualification | Guarantees operation from –40 °C to +125 °C junction temperature with zero defects in automotive manufacturing flow. |
| Tri-state outputs with EN1/EN2 | Enables hot-swap capability and prevents bus contention in multi-isolator systems without external logic. |
| Schmitt-trigger + CMOS input thresholds | Provides >0.15 × VDDx hysteresis - rejects EMI-induced glitches on long PCB traces in industrial PLC backplanes. |
| 36 ns input deglitch filter | Eliminates false triggering from switching noise in isolated gate driver feedback paths or current-sense amplifiers. |
| No start-up initialization | Outputs become valid within 0.3 ms after VDD rise above UVLO+ - eliminates boot-time delays in real-time control loops. |
Applications
| Isolated ADC Interface | Motor Control Gate Driver |
|---|---|
|
Use Scenario: Isolating serial output of precision delta-sigma ADCs (e.g., ADS131M04) from MCU in high-voltage battery monitoring systems. IC Role / Device Role / Timing Role: Bidirectional digital isolator transmitting conversion data and clock while blocking common-mode transients up to 100 kV/µs. Use Value: Maintains 16-bit effective resolution by preventing ground-loop noise coupling and enabling 150 Mbps SPI readout without timing skew. |
Use Scenario: Isolating PWM signals and fault feedback between MCU and 3-phase IGBT/SiC gate driver ICs in servo drives. IC Role / Device Role / Timing Role: Four-channel isolator carrying complementary PWM pairs and DESAT/FAULT signals across reinforced barrier. Use Value: 10 ns propagation delay ensures <1% duty-cycle error at 20 kHz switching; 6000 VRMS rating supports 1200 V DC bus compliance. |
| Onboard Charger (OBC) | Battery Management System (BMS) |
|
Use Scenario: Isolating communication between AC/DC controller and DC/DC secondary-side supervisor in EV onboard chargers. IC Role / Device Role / Timing Role: Signal isolator for PMBus/I2C and GPIO status lines, supporting fail-safe default-high during primary-side brownout. Use Value: EC-suffix default-high behavior ensures secondary-side watchdog remains enabled during VDD1 dropout - preventing unsafe restart. |
Use Scenario: Isolating cell voltage measurement ICs (e.g., BQ79616) from main BMS microcontroller in 800 V battery packs. IC Role / Device Role / Timing Role: High-CMTI isolator for daisy-chained SPI communication and pack-level fault signaling. Use Value: 36 ns deglitch filtering suppresses switching noise from adjacent contactors, ensuring reliable cell balancing command delivery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4401BRWZ | 4-channel, 100 Mbps, 5000 VRMS, SOIC-16, no deglitch filter, default-low only | Lacks 36 ns input filtering and 6000 VRMS rating; not AEC-Q100 qualified | Choose for cost-sensitive industrial PLCs where 5000 VRMS suffices and noise environment is benign. |
| ISO6741FDWR | 4-channel, 50 Mbps, 5000 VRMS, SOIC-16, no deglitch, default-low only, lower CMTI (85 kV/µs) | Lower speed and isolation rating; no automotive qualification; no fail-safe high option | Prefer for legacy 25 Mbps isolated UART or CAN FD interfaces where budget constraints outweigh performance needs. |
Compared with ADUM4401BRWZ and ISO6741FDWR, SI86S641EC-IS1R provides higher isolation (6000 VRMS), faster data rate (150 Mbps), built-in 36 ns deglitching, and AEC-Q100 qualification - making it uniquely suitable for next-generation EV power electronics requiring functional safety and noise resilience.
Availability
SI86S641EC-IS1R is available at Aetrix Electronics and suitable for industrial automation systems, onboard chargers, and battery management systems requiring stable component supply with automotive-grade reliability and reinforced safety certification.
Supply support for SI86S641EC-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 for high-reliability markets.
The Si86S6xx family was designed specifically for high-noise, safety-critical applications in electric vehicles, industrial motor drives, and medical power systems - emphasizing reinforced isolation, AEC-Q100 compliance, and RF-based noise immunity.
FAQ
What is the isolation rating and safety certification status of SI86S641EC-IS1R?
SI86S641EC-IS1R is rated for 6000 VRMS isolation per UL 1577 (1 minute) and carries reinforced insulation certification per IEC 60747-17. It also meets CSA 62368-1 and CQC GB4943.1 requirements. All certifications are verified and documented in Skyworks' official safety reports - no pending status applies to this specific part number.
Does SI86S641EC-IS1R support input deglitch filtering, and how is it implemented?
Yes, SI86S641EC-IS1R includes a factory-configured 36 ns input deglitch filter on all A-side inputs, as confirmed for the Si86S64x family in Section 3.4.5 of the datasheet. This hardware filter blocks noise pulses shorter than 36 ns, ensuring only valid logic transitions propagate - critical for reliable operation near high-dV/dt power stages.
What does the "EC" suffix in SI86S641EC-IS1R indicate?
Per Skyworks' ordering guide, the "EC" suffix denotes the fail-safe output configuration: default-high output state when VDD1 is unpowered but VDD2 remains active. This behavior is hard-coded in silicon and verified in Table 4 (Si86S6x/Lx/Mx Logic Operation) - distinguishing SI86S641EC-IS1R from "EB" (default-low) and "ED" (no fail-safe) variants.
Can SI86S641EC-IS1R be used in automotive applications, and what qualifications does it hold?
Yes, SI86S641EC-IS1R is AEC-Q100 Grade 1 qualified (–40 °C to +125 °C), manufactured using automotive-specific process flows, and supported with AIAG-compliant PPAP documentation. It is explicitly listed for automotive applications including onboard chargers, battery management systems, and traction inverters in the datasheet's front-page application list.
What are the supply bypass requirements for SI86S641EC-IS1R?
SI86S641EC-IS1R requires two bypass capacitors per side: a 0.1 µF ceramic capacitor and a 10 µF bulk capacitor placed as close as possible between VDD1–GND1 and VDD2–GND2. This dual-capacitor network suppresses high-frequency switching noise and low-frequency ripple - essential for maintaining 150 Mbps signal integrity and meeting CISPR-25 emissions targets in automotive designs.
SI86S641EC-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:
- 3/1
- 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
SI86S641EC-IS1R FAQ
1.How can I place an order for SI86S641EC-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S641EC-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 SI86S641EC-IS1R reliable?
The price and inventory of SI86S641EC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S641EC-IS1R is usually 5 days.
3.What payment methods are accepted for SI86S641EC-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S641EC-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S641EC-IS1R?
SI86S641EC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S641EC-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 SI86S641EC-IS1R?
For technical support, including SI86S641EC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S641EC-IS1R requirements.
6.How does Aetrix verify that SI86S641EC-IS1R is sourced from the original manufacturer or authorized distributors?
All SI86S641EC-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 SI86S641EC-IS1R meets industry standards.
7.What is the process for return or replacement of SI86S641EC-IS1R?
All SI86S641EC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S641EC-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 SI86S641EC-IS1R part is unused and in its original packaging.
Return procedure for SI86S641EC-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S641EC-IS1R Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
-
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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