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Skyworks Solutions Inc. SI86S641HE-IS2R
- Part No.:
- SI86S641HE-IS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S641HE-IS2R.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,390
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Product details
Overview
SI86S641HE-IS2R from Skyworks Solutions is a 4-channel reinforced digital isolator with 6000 VRMS isolation, 150 Mbps data rate, and AEC-Q100 qualification for automotive systems. It features bidirectional channel configuration, Schmitt-trigger inputs, and selectable fail-safe output (default low) for isolated communication in battery management and traction inverters.
For engineers reviewing the SI86S641HE-IS2R datasheet, SI86S641HE-IS2R pinout, SI86S641HE-IS2R application, or SI86S641HE-IS2R equivalent, this page delivers verified specifications, validated pin functions, automotive-grade safety certifications (IEC 60747-17, UL 1577), and real-world use context for high-reliability isolated signal transfer.
Technical Context
The SI86S641HE-IS2R implements RF-based on/off keying across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity. Its architecture supports independent UVLO and reset per side (VDD1/VDD2), with 100 kΩ weak pulldown during unpowered states and configurable fail-safe outputs.
It operates across 2.25–5.5 V supplies on both sides, delivers 10 ns typical propagation delay and 3.5 ns pulse width distortion, and integrates tri-state outputs with enable control (EN1/EN2). The device supports 100 kV/µs transient immunity and meets reinforced insulation requirements per IEC 60747-17 and UL 1577.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed SPI, CAN FD, and isolated ADC interfaces without timing bottlenecks. |
| Isolation rating | 6000 VRMS - enables safe operation in 1000 VAC industrial and 800 VDC automotive traction systems. |
| Propagation delay | 10 ns (typ) - ensures tight timing alignment between controller and isolated peripheral in motor control loops. |
| 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. |
| Fail-safe mode | Default low output - guarantees safe shutdown state during power loss in battery management system monitoring paths. |
| Transient immunity | 100 kV/µs (min) - suppresses fast transients from IGBT switching in inverters without false triggering. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive environments and industrial PLC backplanes. |
Pinout & Package
SI86S641HE-IS2R uses a WB SOIC-16 package with 6.0 kVRMS reinforced insulation and creepage ≥8.3 mm. Pin layout follows Figure 2 (Si86S64x/L4x) in the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides isolated 2.25–5.5 V bias for input-side logic; requires 0.1 µF + 10 µF local bypass. |
| A1–A4 | Side A digital I/O | Four bidirectional channels with Schmitt-trigger inputs; tolerate 0.3×VDD1 to 0.7×VDD1 noise margins. |
| EN1 | Side A output enable | Active-high control: drives all A-side outputs into high-impedance when low, enabling bus sharing. |
| Isolation Barrier | Dielectric separation | Robust silicon-dioxide barrier certified to IEC 60747-17 reinforced insulation standards. |
| B1–B4 | Side B digital I/O | Galvanically isolated outputs mirroring A1–A4; support 4 mA sink/source at 0.4 V VOL / VDD–0.4 V VOH. |
| EN2 | Side B output enable | Independent tri-state control for B-side outputs; decouples isolated peripherals without breaking ground loops. |
| VDD2, GND2 | Side B power supply | Electrically isolated 2.25–5.5 V domain for secondary-side circuitry; no shared ground reference with Side A. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot delay-output follows input immediately after VDD stabilization (tSTART = 0.3 ms). |
| Tri-state outputs with enable | Dual EN1/EN2 pins allow independent high-impedance control of each side, enabling multi-drop isolated buses. |
| Selectable fail-safe mode | Ordering option "HE" specifies default-low output during VDD1/VDD2 undervoltage, critical for BMS fault signaling. |
| Schmitt-trigger + CMOS thresholds | Input hysteresis ≥0.15×VDD rejects >36 ns noise pulses, preventing glitches in noisy motor drive environments. |
| AEC-Q100 Grade 1 | Qualified for automotive applications up to +125 °C ambient, with PPAP documentation and IMDS/CAMDS compliance support. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage monitor ICs from MCU in high-voltage EV battery packs (up to 900 VDC). IC Role / Device Role / Timing Role: SI86S641HE-IS2R transfers ADC conversion results and fault flags across the isolation barrier with <10 ns skew. Use Value: 6000 VRMS rating and AEC-Q100 qualification ensure functional safety compliance (ISO 26262 ASIL-C) in automotive BMS. | Use Scenario: Transmitting PWM gate signals and current-sense feedback between DSP and IGBT drivers in 800 V inverters. IC Role / Device Role / Timing Role: SI86S641HE-IS2R provides bidirectional status exchange (ready/busy) and isolated fault reporting with 100 kV/µs CMTI. Use Value: 150 Mbps bandwidth supports high-resolution dead-time control and fast overcurrent response (<1 µs detection latency). |
| Industrial PLC Analog I/O Module | Medical Isolated Data Acquisition |
Use Scenario: Isolating 4–20 mA loop transmitters and isolated ADCs in factory automation I/O cards. IC Role / Device Role / Timing Role: SI86S641HE-IS2R interfaces microcontroller SPI to isolated sigma-delta ADCs while maintaining channel-to-channel timing coherence. Use Value: 3.5 ns pulse width distortion preserves integrity of time-critical calibration sequences and sensor synchronization pulses. | Use Scenario: Galvanic isolation of ECG/EEG front-end amplifiers from USB-connected host processors in diagnostic equipment. IC Role / Device Role / Timing Role: SI86S641HE-IS2R carries digitized biopotential waveforms and control commands across patient-isolation barrier. Use Value: Reinforced insulation per IEC 60601-1 and 60747-17 ensures 2×MOPP protection for Class BF medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4401BRIZ | 4-channel, 100 Mbps, 5000 VRMS, 2.7–5.5 V supply, no AEC-Q100 qualification | Targeted at industrial automation; lacks automotive qualification and 6000 VRMS rating | Choose for cost-sensitive non-automotive designs where 5000 VRMS suffices and AEC-Q100 is not required. |
| ISO7741FDWR | 4-channel, 100 Mbps, 5000 VRMS, 2.25–5.5 V, VDE-certified, no sleep mode | Designed for general-purpose isolation; missing fail-safe default-low option and 150 Mbps capability | Select when VDE certification is mandatory and 100 Mbps bandwidth meets system timing needs. |
Compared with ADUM4401BRIZ and ISO7741FDWR, SI86S641HE-IS2R delivers higher isolation (6000 vs. 5000 VRMS), faster data rate (150 vs. 100 Mbps), and automotive qualification-making it optimal for next-generation EV power electronics where safety, speed, and environmental ruggedness are co-constrained.
Availability
SI86S641HE-IS2R is available at Aetrix Electronics and suitable for battery management systems, traction inverters, industrial PLC modules, and medical data acquisition requiring stable component supply across automotive and industrial lifecycles.
Supply support for SI86S641HE-IS2R 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 is engineered for high-reliability galvanic isolation in harsh environments-specifically targeting automotive electrification, industrial automation, and medical electronics where safety certification and electromagnetic robustness are non-negotiable.
FAQ
What is the isolation voltage rating of SI86S641HE-IS2R and which safety standards does it meet?
SI86S641HE-IS2R provides 6000 VRMS reinforced isolation per UL 1577 (1-minute test) and complies with IEC 60747-17, CSA 62368-1/60601-1, and CQC GB4943.1. This rating supports 800 VDC working voltage in automotive traction systems and meets double-insulation requirements for Class I medical equipment.
Does SI86S641HE-IS2R require external startup configuration or initialization firmware?
No. SI86S641HE-IS2R uses RF on/off keying architecture with no start-up initialization required. Outputs follow inputs within 0.3 ms after VDD1/VDD2 rise above UVLO+ (2.18 V), and internal reset circuitry ensures deterministic behavior during power transitions-eliminating boot code dependencies.
How does the fail-safe mode function in SI86S641HE-IS2R, and how is it configured?
SI86S641HE-IS2R is ordered with "HE" suffix to specify default-low fail-safe mode. When either VDD1 or VDD2 drops below UVLO– (2.05 V), outputs enter a known low state-critical for BMS fault signaling. Configuration is fixed at manufacture; no external pins or registers control this behavior.
What are the supply voltage requirements and bypass capacitor recommendations for SI86S641HE-IS2R?
SI86S641HE-IS2R operates from 2.25 V to 5.5 V on both VDD1 and VDD2. Each supply requires a 0.1 µF ceramic capacitor placed adjacent to the pin and a 10 µF bulk capacitor within 10 mm-per Skyworks AN1359. This dual-capacitor network suppresses high-frequency noise and sustains transient current demands during 150 Mbps data bursts.
Can SI86S641HE-IS2R support bidirectional communication on individual channels?
Yes. SI86S641HE-IS2R supports true bidirectional signal transfer per channel (A1↔B1, A2↔B2, etc.) using independent EN1/EN2 enables. Unlike unidirectional isolators, it allows dynamic direction reversal without external logic-enabling isolated I²C, SMBus, or half-duplex SPI interfaces with minimal PCB footprint.
SI86S641HE-IS2R 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:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 6000Vrms
- 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
SI86S641HE-IS2R FAQ
1.How can I place an order for SI86S641HE-IS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S641HE-IS2R 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 SI86S641HE-IS2R reliable?
The price and inventory of SI86S641HE-IS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S641HE-IS2R is usually 5 days.
3.What payment methods are accepted for SI86S641HE-IS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S641HE-IS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S641HE-IS2R?
SI86S641HE-IS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S641HE-IS2R 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 SI86S641HE-IS2R?
For technical support, including SI86S641HE-IS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S641HE-IS2R requirements.
6.How does Aetrix verify that SI86S641HE-IS2R is sourced from the original manufacturer or authorized distributors?
All SI86S641HE-IS2R 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 SI86S641HE-IS2R meets industry standards.
7.What is the process for return or replacement of SI86S641HE-IS2R?
All SI86S641HE-IS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S641HE-IS2R, 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 SI86S641HE-IS2R part is unused and in its original packaging.
Return procedure for SI86S641HE-IS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S641HE-IS2R 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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