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Skyworks Solutions Inc. SI86S631EE-AS2R
- Part No.:
- SI86S631EE-AS2R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S631EE-AS2R.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 3 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:3,379
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Product details
Overview
SI86S631EE-AS2R from Skyworks Solutions is a 3-channel, reinforced digital isolator with 6000 VRMS isolation rating, 150 Mbps data rate, and dual 2.25–5.5 V supply operation across isolated sides. It features tri-state outputs with enable, selectable fail-safe default-high/low output, and operates from –40 to 125 °C for use in battery management systems and isolated ADC interfaces.
For engineers reviewing the SI86S631EE-AS2R datasheet, SI86S631EE-AS2R pinout, SI86S631EE-AS2R application, or SI86S631EE-AS2R equivalent, key selection criteria include reinforced IEC 60747-17 certification, 10 ns typical propagation delay, 3.5 ns pulse width distortion, transient immunity ≥100 kV/µs, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The SI86S631EE-AS2R implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity without optical degradation. Its architecture supports independent undervoltage lockout (UVLO) and reset monitoring per side (VDD1/VDD2), with 2.10–2.25 V UVLO+ thresholds and 1.98–2.12 V UVLO– thresholds.
It delivers precise timing with 10 ns typical propagation delay and 3.5 ns pulse width distortion, while supporting fail-safe operation via ordering option: default high or low output during unpowered input-side conditions. The device integrates Schmitt-trigger + CMOS threshold inputs and tri-state output control via EN1/EN2 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed serial links including SPI and isolated sensor interfaces |
| Isolation rating | 6000 VRMS - meets reinforced insulation requirements per UL 1577 and IEC 60747-17 for safety-critical systems |
| Propagation delay | 10 ns typical - enables tight timing budgets in motor control gate drivers and real-time feedback loops |
| Pulse width distortion | 3.5 ns typical - preserves signal integrity for clock distribution and bidirectional data channels |
| 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 power converter environments |
| Transient immunity | ≥100 kV/µs - ensures reliable operation in high-noise motor drive and inverter applications |
| AEC-Q100 grade | Qualified - validated for automotive use including onboard chargers and traction inverters |
Pinout & Package
SI86S631EE-AS2R uses a WB SOIC-16 package with 6.0 mm creepage/clearance and reinforced insulation barrier. Pin layout follows Figure 1 of the datasheet (Si86S63x family).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A power supply | Provides isolated 2.25–5.5 V domain for input-side logic; requires 0.1 µF + 10 µF bypass capacitors |
| A1–A3 | Side A digital I/O | Three unidirectional input channels referenced to VDD1/GND1; Schmitt-trigger + CMOS thresholds |
| EN1 | Side A output enable | Active-high control for tri-stating all Side A outputs (A1–A3); enables system-level power gating |
| Isolation Barrier | Internal die separation | Semiconductor-based RF-coupled barrier rated for 6000 VRMS, 100 kV/µs CMTI, and IEC 60747-17 compliance |
| B1–B3 | Side B digital I/O | Three unidirectional output channels referenced to VDD2/GND2; fail-safe state configurable at power loss |
| EN2 | Side B output enable | Active-high control for tri-stating all Side B outputs (B1–B3); independent of EN1 for asymmetric control |
| VDD2, GND2 | Side B power supply | Independent 2.25–5.5 V domain for output-side logic; supports different voltage rails than Side A |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot sequence delays - outputs follow inputs immediately after UVLO exit |
| Selectable fail-safe mode | Ordering option sets default output state (high or low) when Side A is unpowered but Side B remains active |
| Tri-state outputs with enable | EN1/EN2 pins provide per-side output disable - essential for bus arbitration and multi-drop isolated networks |
| High electromagnetic immunity | 100 kV/µs common-mode transient immunity - maintains signal integrity in noisy motor drive and power supply environments |
| Reinforced safety certification | UL 1577, CSA 62368-1/60601-1, VDE 60747-17, CQC GB4943.1 - enables single-component compliance for medical and industrial end-equipment |
| Wide temperature range | –40 to 125 °C operation - supports placement near power stages in EV traction inverters and industrial SMPS |
Applications
| Battery Management System (BMS) | Isolated ADC Interface |
|---|---|
Use Scenario: Monitoring cell voltages and temperatures in high-voltage EV battery packs using isolated sigma-delta ADCs. IC Role / Device Role / Timing Role: Isolates digital control signals between MCU (Side A) and isolated ADC (Side B), preserving timing-critical sampling clocks. Use Value: 10 ns propagation delay ensures sub-microsecond synchronization; 6000 VRMS rating enables direct connection to >800 V battery stacks. | Use Scenario: Digitally isolating analog-to-digital conversion results in industrial PLC analog input modules. IC Role / Device Role / Timing Role: Transfers serial data (e.g., SPI) from isolated ADC to host processor across reinforced barrier. Use Value: 150 Mbps data rate supports oversampled 24-bit ADC streams; AEC-Q100 qualification adds reliability margin for harsh factory floors. |
| Onboard Charger (OBC) | Motor Control Gate Driver Interface |
Use Scenario: Isolating communication between AC/DC controller and DC/DC stage in EV onboard chargers. IC Role / Device Role / Timing Role: Carries status, fault, and configuration signals across isolation boundary with fail-safe defaults during brownouts. Use Value: Selectable default-high/low output prevents undefined states during VDD1 dropout; 125 °C rating matches OBC thermal profiles. | Use Scenario: Transmitting PWM signals from MCU to isolated gate drivers in 3-phase inverter legs. IC Role / Device Role / Timing Role: Delivers low-jitter, low-propagation-delay PWM edges to half-bridge drivers while blocking high dv/dt noise. Use Value: 3.5 ns pulse width distortion preserves duty cycle accuracy; 100 kV/µs CMTI rejects switching transients from SiC MOSFETs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM131D0BRZ | 3-channel, 150 Mbps, 3750 VRMS isolation, SOIC-16, 2.7–5.5 V supply | Lacks AEC-Q100 qualification and reinforced 6000 VRMS rating; lower CMTI (75 kV/µs) | Preferred where cost sensitivity outweighs automotive qualification and higher isolation voltage needs |
| ISO6731FDWR | 3-channel, 50 Mbps, 5000 VRMS, SOIC-16, 2.25–5.5 V supply | Lower data rate and isolation rating; no fail-safe output option; not AEC-Q100 qualified | Suitable for non-automotive industrial applications with relaxed speed and safety requirements |
Compared with ADUM131D0BRZ and ISO6731FDWR, SI86S631EE-AS2R provides superior isolation robustness (6000 VRMS vs. ≤5000 VRMS), automotive qualification, and tighter timing (10 ns vs. ≥13 ns propagation delay), making it optimal for safety-critical EV and industrial power systems requiring long-term reliability under high stress.
Availability
SI86S631EE-AS2R is available at Aetrix Electronics and suitable for battery management systems, onboard chargers, and isolated ADC interfaces requiring stable component supply across automotive and industrial production cycles.
Supply support for SI86S631EE-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 is engineered for high-reliability isolation in automotive and industrial power systems, emphasizing reinforced safety certification, high-speed timing precision, and extended temperature operation.
FAQ
What is the isolation voltage rating of the SI86S631EE-AS2R?
The SI86S631EE-AS2R has a reinforced isolation rating of 6000 VRMS per UL 1577 for 1 minute, certified to IEC 60747-17, CSA 62368-1/60601-1, and CQC GB4943.1. This enables use in high-voltage battery monitoring and medical equipment where double insulation is mandated.
Does the SI86S631EE-AS2R require external startup initialization?
No, the SI86S631EE-AS2R uses RF-based on/off keying and requires no startup initialization. Outputs begin tracking inputs within 0.3 ms after VDD exceeds the UVLO+ threshold (2.10–2.25 V), eliminating boot firmware dependencies and simplifying system design.
How does the fail-safe mode work on the SI86S631EE-AS2R?
The SI86S631EE-AS2R offers a selectable fail-safe mode (determined by ordering code). When Side A is unpowered but Side B remains active, outputs default to either high or low - preventing undefined states in critical systems like battery disconnect controllers during brownout events.
What are the supply voltage requirements for SI86S631EE-AS2R operation?
The SI86S631EE-AS2R operates with independent 2.25–5.5 V supplies on both sides (VDD1 and VDD2). Each side requires 0.1 µF and 10 µF bypass capacitors placed close to the pins. Supply ramp rate must not exceed 1 V/µs to avoid latch-up.
Is the SI86S631EE-AS2R qualified for automotive applications?
Yes, the SI86S631EE-AS2R is AEC-Q100 qualified and supports AIAG-compliant PPAP documentation, IMDS/CAMDS listings, and automotive-specific manufacturing flows - making it suitable for onboard chargers, battery management systems, and traction inverters in EV/HEV platforms.
SI86S631EE-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:
- 3
- Inputs - Side 1/Side 2:
- 2/1
- 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
SI86S631EE-AS2R FAQ
1.How can I place an order for SI86S631EE-AS2R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S631EE-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 SI86S631EE-AS2R reliable?
The price and inventory of SI86S631EE-AS2R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S631EE-AS2R is usually 5 days.
3.What payment methods are accepted for SI86S631EE-AS2R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S631EE-AS2R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S631EE-AS2R?
SI86S631EE-AS2R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S631EE-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 SI86S631EE-AS2R?
For technical support, including SI86S631EE-AS2R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S631EE-AS2R requirements.
6.How does Aetrix verify that SI86S631EE-AS2R is sourced from the original manufacturer or authorized distributors?
All SI86S631EE-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 SI86S631EE-AS2R meets industry standards.
7.What is the process for return or replacement of SI86S631EE-AS2R?
All SI86S631EE-AS2R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S631EE-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 SI86S631EE-AS2R part is unused and in its original packaging.
Return procedure for SI86S631EE-AS2R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S631EE-AS2R 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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