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Skyworks Solutions Inc. SI86S641BB-IUR
- Part No.:
- SI86S641BB-IUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI86S641BB-IUR.pdf
- Description:
- 2.5 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:3,416
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Product details
Overview
SI86S641BB-IUR from Skyworks Solutions is a 4-channel reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier. It supports DC to 150 Mbps data rates, delivers 10 ns typical propagation delay, and provides 6000 VRMS isolation rating per UL 1577. The device operates from 2.25–5.5 V supplies on both sides and features selectable fail-safe output (default low), tri-state outputs with enable, and Schmitt-trigger CMOS inputs - deployed in industrial motor control and automotive battery management systems.
For engineers reviewing the SI86S641BB-IUR datasheet, SI86S641BB-IUR pinout, SI86S641BB-IUR application, or SI86S641BB-IUR equivalent, key selection criteria include reinforced 6000 VRMS isolation, AEC-Q100 qualification for automotive use, 4-channel forward/reverse I/O configuration, and compatibility with isolated SPI interfaces in high-noise power electronics environments.
Technical Context
The SI86S641BB-IUR implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity. Its architecture includes independent undervoltage lockout (UVLO) and reset circuitry on both sides (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO hysteresis of 105–160 mV.
It supports dual-supply operation with side-specific enable pins (EN1/EN2), tri-state output control, and failsafe default-low output behavior during unpowered input conditions. Input deglitch filtering (36 ns) is integrated, and transient immunity exceeds 100 kV/µs - meeting 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 conditioning. |
| Isolation rating | 6000 VRMS (1 min, UL 1577) - enables use in reinforced insulation applications up to 600 V RMS working voltage. |
| Propagation delay | 10 ns typical - ensures tight timing alignment in real-time control loops such as 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-shifting components. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
| CMTI | >100 kV/µs - suppresses false triggering in high-dV/dt gate-drive circuits like SiC and GaN inverters. |
| AEC-Q100 grade | Qualified - meets stress test requirements for automotive electronics including thermal cycling and HTOL. |
Pinout & Package
SI86S641BB-IUR is housed in a narrow-body SOIC-16 (NB SOIC-16) package with 1.27 mm pitch, 10.3 mm × 7.5 mm footprint, and creepage/clearance ≥8.3 mm - compliant with reinforced insulation requirements per IEC 60747-17.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Side A supply | Power for primary-side logic and transmitter circuits; bypass with 0.1 µF + 10 µF capacitors. |
| GND1 | Side A ground | Reference return for VDD1; must be separated from GND2 by isolation barrier. |
| A1–A4 | Side A I/O | Four bidirectional digital channels; support Schmitt-trigger inputs and CMOS thresholds. |
| EN1 | Side A enable | Active-high control for tri-stating all A-side outputs; internal 10 kΩ pull-up recommended. |
| Isolation Barrier | Internal die separation | Monolithic semiconductor barrier providing 6000 VRMS isolation; no external components required. |
| B1–B4 | Side B I/O | Four isolated digital outputs/inputs mirrored from A-side; electrically and galvanically decoupled. |
| EN2 | Side B enable | Active-high control for tri-stating all B-side outputs; independent of EN1 for asymmetric control. |
| VDD2 / GND2 | Side B supply / ground | Secondary-side power domain; supports independent voltage rails (e.g., 3.3 V MCU ↔ 5 V sensor). |
Key Features
| Feature | Design Value |
|---|---|
| No-startup initialization | RF modulation architecture eliminates boot sequence - outputs become valid immediately after VDD stabilization. |
| Selectable fail-safe mode | Default-low output state during VDD1 loss ensures safe shutdown in motor control or power converter fault conditions. |
| Input deglitch filter | 36 ns pulse rejection - suppresses EFT bursts and switching noise in industrial PLC I/O modules. |
| Tri-state outputs with enable | EN1/EN2 pins allow dynamic bus sharing across multiple isolators on shared PCB traces without contention. |
| Reinforced safety certification | UL 1577, VDE 60747-17, CSA 62368-1, CQC GB4943.1 - enables single-component compliance in medical and EV charging systems. |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
|
Use Scenario: Isolating gate-driver signals and current-sense feedback in 3-phase inverter drives. IC Role / Device Role / Timing Role: Bidirectional channel isolator for PWM and fault reporting across high-voltage DC bus. Use Value: 10 ns propagation delay enables precise dead-time control; 6000 VRMS rating supports 800 V battery systems. |
Use Scenario: Signal isolation between MCU and cell monitoring ICs in multi-cell EV battery packs. IC Role / Device Role / Timing Role: Reinforced isolator for voltage/current telemetry and pack-level fault signaling. Use Value: AEC-Q100 qualification ensures reliability over 15-year vehicle lifetime; –40 to +125 °C range covers under-hood thermal extremes. |
| Isolated Switch-Mode Power Supply | Medical Isolated ADC Interface |
|
Use Scenario: Feedback path isolation in digitally controlled AC/DC and DC/DC converters using opto-replacement topology. IC Role / Device Role / Timing Role: High-CMTI isolator for secondary-side voltage sensing and primary-side PWM control loop closure. Use Value: 100 kV/µs transient immunity prevents false triggering during MOSFET/SiC switching edge transients. |
Use Scenario: Isolating precision analog-to-digital conversion signals in patient-connected diagnostic equipment. IC Role / Device Role / Timing Role: Reinforced barrier for SPI data transfer between isolated ADC and host processor. Use Value: UL/VDE reinforced certification satisfies IEC 60601-1 creepage/clearance and patient leakage current requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2401ARWZ | 4-channel, 25 Mbps max, 2500 VRMS isolation, SOIC-16 wide-body; no AEC-Q100 or 150 Mbps support. | Suitable for non-automotive industrial control where lower speed and reduced isolation rating are acceptable. | Choose ADUM2401ARWZ only if system-level safety certification does not require 6000 VRMS or automotive qualification. |
| ISO6741FDWR | 4-channel, 50 Mbps, 5000 VRMS, SOIC-16; supports 1.8–5.5 V but lacks deglitch filtering and AEC-Q100. | Fits cost-sensitive consumer-grade isolated interfaces where 100 kV/µs CMTI and fail-safe defaults are not critical. | Select ISO6741FDWR when board space and BOM count are prioritized over automotive robustness and ultra-high noise immunity. |
Compared with ADUM2401ARWZ and ISO6741FDWR, SI86S641BB-IUR delivers higher data rate, reinforced 6000 VRMS isolation, AEC-Q100 qualification, and integrated 36 ns input filtering - making it uniquely suited for next-generation EV traction inverters and high-reliability industrial automation.
Availability
SI86S641BB-IUR is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, and isolated switch-mode power supplies requiring stable component supply and long-term lifecycle assurance.
Supply support for SI86S641BB-IUR 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-performance applications.
The Si86S6xx family was designed specifically for high-reliability, high-noise industrial and automotive systems requiring reinforced isolation, extended temperature operation, and AEC-Q100 qualification - targeting power conversion, motor drive, and battery monitoring subsystems.
FAQ
What is the isolation voltage rating of the SI86S641BB-IUR?
The SI86S641BB-IUR is rated for 6000 VRMS isolation per UL 1577 for 1 minute, with reinforced insulation certification per VDE 60747-17 and CSA 62368-1. This enables its use in applications requiring reinforced barrier protection up to 600 V RMS working voltage, including EV onboard chargers and industrial inverters. The rating applies to the NB SOIC-16 package with minimum creepage and clearance distances verified per standard.
Does the SI86S641BB-IUR support fail-safe operation during power loss?
Yes, the SI86S641BB-IUR is configured as a default-low fail-safe option (indicated by "B" in the part number suffix). When VDD1 is unpowered but VDD2 remains active, outputs B1–B4 are held low - a critical safety feature in motor control and power supply feedback paths. This behavior is confirmed in Table 4 of the datasheet and requires no external circuitry to implement.
Can the SI86S641BB-IUR be used in automotive applications?
Yes, the SI86S641BB-IUR is AEC-Q100 qualified (Grade 1, –40 to +125 °C), with AIAG-compliant PPAP documentation and IMDS/CAMDS support. It is explicitly listed for automotive applications including onboard chargers, battery management systems, and traction inverters - meeting the robustness, defectivity, and traceability requirements for automotive electronics production.
What is the purpose of the EN1 and EN2 pins on the SI86S641BB-IUR?
The EN1 and EN2 pins are active-high enable inputs that place the corresponding side's outputs (A1–A4 or B1–B4) into high-impedance tri-state mode. This allows dynamic bus sharing in multi-isolator configurations and reduces power consumption during idle periods. Each pin has internal 10 kΩ pull-up; external pull-down resistors may be added for deterministic startup states.
How does the SI86S641BB-IUR handle input noise and glitches?
The SI86S641BB-IUR integrates a 36 ns input deglitch filter on all channels, rejecting noise pulses shorter than this duration while passing valid logic transitions with a fixed 36 ns delay. This feature is factory-configured for the "S64x" variant and is validated per Figure 15 in the datasheet - critical for reliable operation in EFT-prone industrial environments.
SI86S641BB-IUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (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:
- 2500Vrms
- 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-QSOP
SI86S641BB-IUR FAQ
1.How can I place an order for SI86S641BB-IUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S641BB-IUR 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 SI86S641BB-IUR reliable?
The price and inventory of SI86S641BB-IUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S641BB-IUR is usually 5 days.
3.What payment methods are accepted for SI86S641BB-IUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S641BB-IUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S641BB-IUR?
SI86S641BB-IUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S641BB-IUR 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 SI86S641BB-IUR?
For technical support, including SI86S641BB-IUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S641BB-IUR requirements.
6.How does Aetrix verify that SI86S641BB-IUR is sourced from the original manufacturer or authorized distributors?
All SI86S641BB-IUR 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 SI86S641BB-IUR meets industry standards.
7.What is the process for return or replacement of SI86S641BB-IUR?
All SI86S641BB-IUR units undergo pre-shipment inspection (PSI). If there is an issue with SI86S641BB-IUR, 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 SI86S641BB-IUR part is unused and in its original packaging.
Return procedure for SI86S641BB-IUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S641BB-IUR 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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