My Inquiry
My Account
Skyworks Solutions Inc. SI86S631EE-IS2
- Part No.:
- SI86S631EE-IS2
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI86S631EE-IS2.pdf
- Description:
- 6.0 KVRMS ISOLATOR, 3 UNIDIRECTI
- Quantity:
- Payment:
- Shipping:
Inventory:3,297
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SI86S631EE-IS2 from Skyworks Solutions is a 3-channel, reinforced digital isolator with 6000 VRMS isolation rating, 150 Mbps data rate, and AEC-Q100 qualification for automotive use. It features Schmitt-trigger + CMOS inputs, tri-state outputs with enable, selectable fail-safe mode (default high/low), and operates across –40 to 125 °C in WB SOIC-16 package. It is used in battery management systems and traction inverters where high noise immunity and safety-certified signal isolation are required.
For engineers reviewing the SI86S631EE-IS2 datasheet, SI86S631EE-IS2 pinout, SI86S631EE-IS2 application, or SI86S631EE-IS2 equivalent, this page delivers verified technical context, exact pin functions, real-world automotive and industrial use cases, and two validated alternative parts with documented functional and application differences.
Technical Context
The SI86S631EE-IS2 implements RF-based on/off keying across a semiconductor isolation barrier-no start-up initialization required. Its architecture delivers 10 ns typical propagation delay and 3.5 ns pulse width distortion while maintaining 100 kV/µs transient immunity and reinforced insulation per IEC 60747-17.
It supports dual-supply operation (2.25–5.5 V on both sides), includes EN1/EN2 active-high output enables per side, and offers fail-safe output state selection (default high or low) via ordering option. The device integrates undervoltage lockout (UVLO) and reset circuitry on both sides, with independent RSTB thresholds (~1.7 V) and UVLO hysteresis (105–160 mV).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data rate | DC to 150 Mbps - supports high-speed SPI, CAN FD, and motor control feedback loops without timing bottlenecks. |
| Isolation rating | 6000 VRMS (1 min) - meets reinforced insulation requirements for onboard chargers and battery electric vehicle systems. |
| Propagation delay | 10 ns typical - enables precise timing-critical applications such as gate driver signaling in traction inverters. |
| 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 environments and industrial motor drives. |
| CMTI | 100 kV/µs minimum - ensures robust operation in high-di/dt noise environments like power inverters. |
| AEC-Q100 grade | Grade 1 - certified for automotive applications including battery management and charging stations. |
Pinout & Package
SI86S631EE-IS2 is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS reinforced isolation. Pin layout follows Figure 1 of the datasheet (Si86S63x family).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, GND1 | Side A supply and ground | Power domain for input-side channels (A1–A3); requires 0.1 µF + 10 µF bypass capacitors. |
| A1–A3 | Digital I/O (Side A) | Three unidirectional input channels referenced to VDD1/GND1; Schmitt-trigger + CMOS threshold inputs. |
| EN1 | Active-high enable (Side A) | Tri-states all Side A outputs when low; enables normal operation when high. |
| Isolation Barrier | Internal RF coupling barrier | Semiconductor-based dielectric barrier enabling 6000 VRMS withstand; no optocoupler aging or LED degradation. |
| B1–B3 | Digital I/O (Side B) | Three unidirectional output channels referenced to VDD2/GND2; CMOS-compatible drive capability. |
| EN2 | Active-high enable (Side B) | Tri-states all Side B outputs when low; independent control from EN1. |
| VDD2, GND2 | Side B supply and ground | Isolated power domain for output-side channels; decoupled from Side A for noise rejection. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | RF modulation architecture eliminates boot-time delays-output follows input immediately after UVLO exit. |
| Selectable fail-safe mode | Ordering option determines default output state (high or low) during VDD1 loss while VDD2 remains powered. |
| Tri-state outputs with enable | EN1/EN2 pins provide per-side output disable-enables bus sharing and reduces contention in multi-master systems. |
| High electromagnetic immunity | 100 kV/µs CMTI and reinforced IEC 60747-17 rating ensure stable operation in EMI-heavy motor control and inverter environments. |
| Low-power sleep support | Compatible with Si86SMx sleep-mode variants; external SMb pin control reduces quiescent current to 750 µA per side. |
Applications
| Battery Management System (BMS) | Traction Inverter Control |
|---|---|
|
Use Scenario: Isolating cell voltage monitoring and pack-level communication between high-voltage battery stack and MCU. IC Role / Device Role / Timing Role: Provides galvanic isolation for analog front-end ADC signals and digital status lines across 400–800 V DC bus. Use Value: Enables safe, accurate measurement with 6000 VRMS isolation and 10 ns timing precision-critical for SOC/SOH calculation integrity. |
Use Scenario: Transmitting PWM gate signals from inverter controller to isolated IGBT/SiC half-bridge drivers. IC Role / Device Role / Timing Role: Delivers low-jitter, high-CMTI isolated digital signals to gate driver ICs in high-di/dt switching environments. Use Value: Prevents false triggering and shoot-through with 100 kV/µs transient immunity and sub-10 ns propagation delay matching. |
| Onboard Charger (OBC) | Industrial PLC I/O Module |
|
Use Scenario: Isolating AC-DC control loop feedback (voltage/current sensing) and digital handshake signals between primary and secondary sides. IC Role / Device Role / Timing Role: Reinforced isolator for safety-critical Class II medical-grade or EVSE-compliant OBC designs. Use Value: Meets UL 1577, VDE 60747-17, and CQC GB4943.1 requirements-eliminates need for additional certification effort. |
Use Scenario: Providing channel-isolated digital input/output between field-side sensors/actuators and backplane CPU in modular PLC chassis. IC Role / Device Role / Timing Role: Replaces optocouplers in DIN-rail mounted I/O modules requiring long-term reliability and wide-temp operation. Use Value: Delivers 150 Mbps data throughput and –40 to 125 °C operation-supports high-speed discrete I/O scanning at 10 kHz+ rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM3401BRWZ | 4-channel, 100 Mbps, 2.5–5.5 V, 3750 VRMS, non-AEC-Q100 | Lacks automotive qualification and 6000 VRMS rating; suitable for industrial PLCs but not traction inverters. | Choose when cost sensitivity outweighs automotive compliance and higher isolation voltage is unnecessary. |
| ISO7731FDWR | 3-channel, 100 Mbps, 2.25–5.5 V, 5000 VRMS, AEC-Q100 Grade 1 | Lower isolation rating (5000 VRMS vs. 6000 VRMS); same temperature range and fail-safe options. | Prefer for space-constrained designs needing smaller SOIC-16 footprint and lower power (1.8 mA typical IDD). |
Compared with ADUM3401BRWZ and ISO7731FDWR, SI86S631EE-IS2 provides the highest isolation voltage (6000 VRMS) and fastest data rate (150 Mbps) among the three-making it uniquely suited for next-generation EV powertrain systems demanding both safety margin and bandwidth.
Availability
SI86S631EE-IS2 is available at Aetrix Electronics and suitable for battery management systems, traction inverters, and onboard chargers requiring stable component supply across automotive production lifecycles.
Supply support for SI86S631EE-IS2 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 automotive and industrial isolation-delivering reinforced safety certification, extended temperature operation, and RF-based noise immunity without optical degradation.
FAQ
What is the isolation voltage rating of SI86S631EE-IS2 and which standards does it meet?
SI86S631EE-IS2 has a 6000 VRMS isolation rating for 1 minute per UL 1577 and is certified to IEC 60747-17 (reinforced insulation), CSA 62368-1/60601-1, and CQC GB4943.1. This rating applies specifically to the WB SOIC-16 package variant and enables use in high-voltage automotive subsystems such as battery packs and inverters where reinforced insulation is mandated.
Does SI86S631EE-IS2 support fail-safe output configuration, and how is it implemented?
Yes, SI86S631EE-IS2 supports selectable fail-safe mode-default high or default low output state during VDD1 loss while VDD2 remains powered. This is an ordering option determined at manufacture; the SI86S631EE-IS2 part number corresponds to the default-low variant. The behavior is confirmed in Table 4 (Si86S6x/Lx/Mx Logic Operation) of the datasheet.
What are the supply voltage requirements for SI86S631EE-IS2, and can it interface with both 3.3 V and 5 V logic?
SI86S631EE-IS2 operates with 2.25–5.5 V on both VDD1 and VDD2 supplies independently. It fully supports 3.3 V and 5 V logic families on either side without level shifting-its VIH/VIL thresholds scale with VDD (0.7× and 0.3× VDD), and VOH/VOL are rail-to-rail compatible within ±0.4 V of the respective supply rails.
How does SI86S631EE-IS2 achieve high noise immunity, and what is its CMTI specification?
SI86S631EE-IS2 achieves high noise immunity through RF-based on/off keying modulation across a semiconductor isolation barrier-avoiding magnetic susceptibility inherent in pulse-based schemes. Its minimum common-mode transient immunity (CMTI) is 100 kV/µs, verified per JEDEC standards, making it suitable for gate driver isolation in high-di/dt power converters.
Is SI86S631EE-IS2 pin-compatible with other members of the Si86S6xx family, such as SI86S630EE-IS2?
Yes, SI86S631EE-IS2 shares identical pinout and package (WB SOIC-16) with SI86S630EE-IS2 and other Si86S63x variants per Figure 1 of the datasheet. The only functional difference is the number of active channels (3 vs. 3) and fail-safe default state (low vs. high)-both are drop-in replacements in layout, though logic behavior during power loss differs.
SI86S631EE-IS2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 3
- Inputs - Side 1/Side 2:
- 2/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 6000Vrms
- 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
SI86S631EE-IS2 FAQ
1.How can I place an order for SI86S631EE-IS2 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI86S631EE-IS2 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-IS2 reliable?
The price and inventory of SI86S631EE-IS2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S631EE-IS2 is usually 5 days.
3.What payment methods are accepted for SI86S631EE-IS2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S631EE-IS2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI86S631EE-IS2?
SI86S631EE-IS2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI86S631EE-IS2 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-IS2?
For technical support, including SI86S631EE-IS2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S631EE-IS2 requirements.
6.How does Aetrix verify that SI86S631EE-IS2 is sourced from the original manufacturer or authorized distributors?
All SI86S631EE-IS2 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-IS2 meets industry standards.
7.What is the process for return or replacement of SI86S631EE-IS2?
All SI86S631EE-IS2 units undergo pre-shipment inspection (PSI). If there is an issue with SI86S631EE-IS2, 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-IS2 part is unused and in its original packaging.
Return procedure for SI86S631EE-IS2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI86S631EE-IS2 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
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
