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Skyworks Solutions Inc. SI86S640BE-AS2R
- Part No.:
- SI86S640BE-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S640BE-AS2R.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 4 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:2,599
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Product details
Overview
SI86S640BE-AS2R 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 and supports fail-safe default-low output mode - used in isolated ADC interfaces and motor control gate drivers.
For engineers reviewing the SI86S640BE-AS2R datasheet, SI86S640BE-AS2R pinout, SI86S640BE-AS2R application, or SI86S640BE-AS2R equivalent, key selection criteria include its AEC-Q100 qualification, 3.5 ns pulse width distortion, 100 kV/µs CMTI, Schmitt-trigger + CMOS input thresholds, and tri-state output enable functionality for system-level power sequencing.
Technical Context
The SI86S640BE-AS2R implements RF-based on/off keying modulation across a monolithic semiconductor isolation barrier - eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture integrates four independent isolation channels, each with matched transmitter/receiver paths and internal 50 Ω output impedance.
It features dual-side undervoltage lockout (UVLO) with 2.10–2.25 V rising threshold and 1.98–2.12 V falling threshold per side, plus dedicated reset detection at ~1.7 V (RSTB). The device supports fail-safe operation where outputs default low when VDD1 is unpowered but VDD2 remains active - confirmed by Table 4 logic operation for "Default low options".
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including isolated SPI and QSPI data lanes. |
| Propagation delay | 10 ns typical - enables tight timing budgets in real-time motor control feedback loops. |
| Pulse width distortion | 3.5 ns typical - preserves duty cycle integrity for PWM and clock forwarding applications. |
| Isolation rating | 6000 VRMS for 1 minute - meets reinforced insulation requirements per UL 1577 and IEC 60747-17. |
| CMTI | ≥100 kV/µs - ensures reliable operation in high-dV/dt environments like traction inverters and SMPS. |
| Supply voltage | 2.25–5.5 V per side - allows interoperability with 3.3 V and 5 V logic domains without level shifters. |
| Operating temperature | –40 to +125 °C - qualified for under-hood automotive and industrial ambient conditions. |
| Fail-safe mode | Default low output - guarantees safe state during primary-side power loss in safety-critical systems. |
Pinout & Package
SI86S640BE-AS2R is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS reinforced insulation. 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, GND1 | Side A supply pair | Power and ground for channel inputs A1–A4; bypass requires 0.1 µF + 10 µF capacitors. |
| A1–A4 | Digital I/O (Side A) | Four unidirectional input pins; Schmitt-trigger + CMOS thresholds provide >0.15×VDD hysteresis. |
| EN1 | Active-high enable | Tri-states all Side A outputs (A1–A4) when low; no effect on isolation barrier or Side B operation. |
| VDD2, GND2 | Side B supply pair | Power and ground for channel outputs B1–B4; independent of Side A supply domain. |
| B1–B4 | Digital I/O (Side B) | Four unidirectional output pins; 50 Ω nominal output impedance supports controlled-impedance PCB routing. |
| EN2 | Active-high enable | Tri-states all Side B outputs (B1–B4) when low; maintains isolation integrity during sleep or fault states. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot sequence - outputs respond immediately after UVLO exit. |
| Reinforced IEC 60747-17 rating | Validated insulation structure supports safety-critical medical and EV battery management systems. |
| Tri-state outputs with enable | EN1/EN2 pins allow dynamic bus contention control without external switches or pull-ups. |
| Schmitt trigger + CMOS thresholds | Combined input structure rejects fast transients while maintaining compatibility with standard logic families. |
| Selectable fail-safe mode | Ordering option "E" specifies default-low behavior - critical for preventing unintended actuation during brownout. |
| AEC-Q100 qualification | Automotive-grade reliability validated across temperature, humidity, and vibration stress profiles. |
Applications
| Isolated ADC Interface | Motor Control Gate Driver |
|---|---|
Use Scenario: Isolating analog-to-digital converter serial interface (e.g., SPI) between high-voltage power stage and low-voltage controller. IC Role / Device Role / Timing Role: Digital isolator providing galvanic separation for SCLK, MOSI, MISO, and CS signals with <10 ns skew. Use Value: Maintains signal integrity at 150 Mbps while blocking common-mode noise up to 100 kV/µs in inverter leg sensing. |
Use Scenario: Isolating PWM signals from MCU to high-side/low-side IGBT or SiC MOSFET gate drivers in three-phase inverters. IC Role / Device Role / Timing Role: Bidirectional channel isolator delivering synchronized gate drive commands with 3.5 ns pulse width distortion. Use Value: Prevents shoot-through by preserving dead-time accuracy across isolation barrier in traction inverters. |
| Battery Management System | Onboard Charger Control |
Use Scenario: Isolating cell monitoring IC communication (e.g., daisy-chained UART or SPI) in multi-module EV battery packs. IC Role / Device Role / Timing Role: Reinforced isolator enabling safe data transfer across 6000 VRMS barrier between pack-level controller and module sensors. Use Value: Meets IEC 62368-1 and IEC 60601-1 reinforced insulation requirements for Class III medical and automotive BMS. |
Use Scenario: Isolating control signals between AC/DC front-end controller and DC/DC secondary-side regulation in EV onboard chargers. IC Role / Device Role / Timing Role: High-CMTI isolator separating 3.3 V MCU logic from 400–800 V DC bus domains. Use Value: Enables compact, high-efficiency OBC designs compliant with CISPR-25 Class 5 EMI limits via noise-immune signaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2400ARWZ | 4-channel, 25 Mbps max data rate; 5000 VRMS isolation; SOIC-16 (narrow body); no AEC-Q100 qualification. | Limited to industrial automation where 150 Mbps and automotive qualification are not required. | Choose ADUM2400ARWZ only if lower speed and non-automotive use case justify cost savings over SI86S640BE-AS2R. |
| ISO6741FDWR | 4-channel, 50 Mbps max data rate; 5000 VRMS; SOIC-16; supports 1.8–5.5 V supply; no default-low fail-safe option. | Suitable for general-purpose isolation in consumer and industrial equipment with relaxed timing and safety needs. | Select ISO6741FDWR when system-level fail-safe behavior is managed externally and CMTI >50 kV/µs suffices. |
Compared with ADUM2400ARWZ and ISO6741FDWR, SI86S640BE-AS2R provides 3× higher data rate, 20% higher isolation voltage, AEC-Q100 qualification, and factory-configured default-low fail-safe - making it uniquely suited for automotive traction inverters and high-fidelity isolated data acquisition.
Availability
SI86S640BE-AS2R is available at Aetrix Electronics and suitable for automotive onboard chargers, battery management systems, and industrial motor control applications requiring stable component supply across extended product lifecycles.
Supply support for SI86S640BE-AS2R 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 was designed specifically for high-reliability, high-noise-immunity digital isolation in automotive and industrial systems - emphasizing reinforced safety certification, wide temperature operation, and zero-startup-delay performance.
FAQ
What is the isolation voltage rating of SI86S640BE-AS2R and which safety standards does it meet?
SI86S640BE-AS2R is rated for 6000 VRMS isolation for 1 minute per UL 1577 and carries reinforced insulation certification per IEC 60747-17. It also meets CSA 62368-1 and 60601-1, and CQC GB4943.1 - making it suitable for medical and EV battery applications requiring double insulation barriers.
Does SI86S640BE-AS2R require external startup configuration or initialization firmware?
No, SI86S640BE-AS2R requires no startup initialization. Its RF-based modulation architecture begins transmitting immediately after both VDD1 and VDD2 exit undervoltage lockout (UVLO), with typical start-up time of 0.3 ms. This eliminates boot code dependencies and simplifies system design.
How does the fail-safe mode work on SI86S640BE-AS2R, and how is it configured?
The "E" suffix in SI86S640BE-AS2R denotes factory-configured default-low fail-safe mode. When VDD1 is unpowered but VDD2 remains active, outputs B1–B4 are driven low. This behavior is hardwired and does not require external circuitry - ensuring predictable shutdown in power-loss scenarios.
What is the maximum data rate supported by SI86S640BE-AS2R, and what timing parameters enable high-speed operation?
SI86S640BE-AS2R supports DC to 150 Mbps data rate. Key enablers include 10 ns typical propagation delay, 3.5 ns typical pulse width distortion, and ≥100 kV/µs common-mode transient immunity - allowing clean signal transmission even in noisy 800 V traction inverter environments.
Can SI86S640BE-AS2R be used in automotive applications, and what qualifications does it hold?
Yes, SI86S640BE-AS2R is AEC-Q100 qualified (Grade 1: –40 to +125 °C) and built using automotive-specific manufacturing flows. It supports AIAG-compliant PPAP documentation and IMDS/CAMDS reporting - meeting Tier-1 supplier requirements for onboard chargers and battery management systems.
SI86S640BE-AS2R 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:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 6000Vrms
- Common Mode Transient Immunity (Min):
- 150kV/µs
- Data Rate:
- 150Mbps
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
SI86S640BE-AS2R FAQ
1.How can I place an order for SI86S640BE-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S640BE-AS2R 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 SI86S640BE-AS2R reliable?
The price and inventory of SI86S640BE-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S640BE-AS2R is usually 5 days.
3.What payment methods are accepted for SI86S640BE-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S640BE-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S640BE-AS2R?
SI86S640BE-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S640BE-AS2R 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 SI86S640BE-AS2R?
For technical support, including SI86S640BE-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S640BE-AS2R requirements.
6.How does Aetrix verify that SI86S640BE-AS2R is sourced from the original manufacturer or authorized distributors?
All SI86S640BE-AS2R 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 SI86S640BE-AS2R meets industry standards.
7.What is the process for return or replacement of SI86S640BE-AS2R?
All SI86S640BE-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S640BE-AS2R, 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 SI86S640BE-AS2R part is unused and in its original packaging.
Return procedure for SI86S640BE-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S640BE-AS2R Tags
-
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.
-
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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