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Home > Products > Isolators > Digital Isolators

Skyworks Solutions Inc. SI86S663BC-IS1R

Name: SI86S663BC-IS1R
Brand: Skyworks Solutions Inc.
SKU: SI86S663BC-IS1R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI86S663BC-IS1R

Manufacturer:: Skyworks Solutions Inc.

Category:: Digital Isolators

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: SI86S663BC-IS1R.pdf

Description:: 3.75 KVRMS ISOLATOR, 6 UNIDIRECT

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SI86S663BC-IS1R from Skyworks Solutions is a 6-channel reinforced digital isolator with 6000 VRMS isolation, 150 Mbps data rate, and dual 2.25–5.5 V supply operation. It features tri-state outputs with enable, selectable fail-safe default-high/low output, and operates across –40 to 125 °C for use in battery management systems and traction inverters.

For engineers reviewing the SI86S663BC-IS1R datasheet, SI86S663BC-IS1R pinout, SI86S663BC-IS1R application, or SI86S663BC-IS1R equivalent, key selection criteria include reinforced IEC 60747-17 rating, 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 SI86S663BC-IS1R implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and delivering superior noise immunity versus pulse-based schemes. Its architecture supports independent UVLO and reset monitoring per side (VDD1/VDD2), with 100 kΩ weak pulldown during unpowered states and configurable fail-safe output polarity.

It integrates six bidirectional isolated channels with Schmitt-trigger + CMOS threshold inputs, tri-state enable control (EN1/EN2), and no external components beyond 0.1 µF + 10 µF bypass capacitors. The device meets reinforced insulation requirements per UL 1577, CSA 62368-1/60601-1, VDE 60747-17, and CQC GB4943.1.

Key Specifications

Parameter	Value and Actual Design Meaning
Data rate	DC to 150 Mbps - supports high-speed serial interfaces including isolated SPI and QSPI.
Isolation rating	6000 VRMS - enables safe operation in high-voltage industrial and automotive systems (e.g., onboard chargers, inverters).
Propagation delay	10 ns typical - ensures tight timing alignment in real-time motor control and power conversion feedback loops.
Pulse width distortion	3.5 ns typical - preserves signal integrity for clock distribution and high-resolution ADC/DAC isolation.
Transient immunity	≥100 kV/µs - provides robust operation in EMI-heavy environments like motor drives and switching supplies.
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.
Safety certification	IEC 60747-17 reinforced - satisfies system-level safety standards (62368-1, 60601-1) without additional component-level analysis.

Pinout & Package

SI86S663BC-IS1R is housed in a WB SOIC-16 package (wide-body, 10.3 mm creepage/clearance), supporting 6000 VRMS isolation with reinforced insulation.

Pin/Terminal	Circuit Role	Design Meaning
VDD1, GND1	Side A power domain	Supplies and grounds the input-side logic; independent of Side B for galvanic separation.
A1–A6	Side A digital I/O	6 isolated input/output pins on primary side; compatible with CMOS/Schmitt thresholds.
VDD2, GND2	Side B power domain	Supplies and grounds the output-side logic; enables dual-supply system partitioning.
B1–B6	Side B digital I/O	6 isolated input/output pins on secondary side; fully bidirectional with no direction pin required.
EN1, EN2	Active-high output enable	Tri-states all outputs on respective side-enables shared bus architectures and low-power sleep coordination.

Key Features

Feature	Design Value
No start-up initialization	RF modulation architecture eliminates boot delay-output follows input immediately after UVLO exit (tSTART ≈ 0.3 ms).
Selectable fail-safe mode	Ordering option sets default output state (high or low) during VDD1 loss while VDD2 remains powered-critical for safe shutdown in BMS.
High electromagnetic immunity	100 kV/µs CMTI rating ensures reliable operation near IGBTs, transformers, and high-dI/dt power stages.
Low power + sleep mode options	Quiescent current as low as 0.7 mA/side at 5 V; SMb pin (not present on SI86S663) not applicable-this variant uses EN1/EN2 for tristate control only.
Reinforced safety certification	UL 1577, VDE 60747-17, CSA 62368-1/60601-1, CQC GB4943.1 - enables direct use in medical and EV systems without additional isolation validation.
Wide supply range	2.25–5.5 V per side accommodates aging batteries, LDO dropout, and mixed-voltage PCB designs without rail translation.

Applications

Battery Management System (BMS)	Traction Inverter Control
Use Scenario: Isolating cell voltage monitoring and pack communication between high-voltage battery stack and low-voltage MCU. IC Role / Device Role / Timing Role: Six-channel digital isolator providing galvanic separation for analog front-end SPI data and fault signaling across 400–800 V DC bus. Use Value: 6000 VRMS rating and AEC-Q100 qualification ensure long-term reliability in automotive battery enclosures with thermal cycling and vibration.	Use Scenario: Transmitting PWM gate signals and feedback from IGBT/SiC drivers to controller in electric vehicle powertrain. IC Role / Device Role / Timing Role: High-speed, low-jitter isolator preserving edge timing of 20–100 kHz switching waveforms with <3.5 ns pulse distortion. Use Value: 100 kV/µs CMTI prevents false triggering during high-dI/dt switching events, improving inverter efficiency and safety.
Industrial Motor Drive	Isolated ADC/DAC Interface
Use Scenario: Isolating encoder feedback, current sensing, and safety interlock signals in servo drives operating at 690 V AC mains. IC Role / Device Role / Timing Role: Bidirectional 6-channel isolator enabling full-duplex position loop communication and hardware fault reporting across isolation barrier. Use Value: –40 to 125 °C operation and reinforced insulation meet IEC 61800-5-1 requirements for drive safety integrity levels (SIL2).	Use Scenario: Interfacing precision isolated sigma-delta ADCs (e.g., AMC130x) and DACs to host processors in programmable logic controllers. IC Role / Device Role / Timing Role: Low-propagation-delay isolator maintaining timing coherence between sampling clocks and data lines in multi-channel acquisition systems. Use Value: 10 ns typical propagation delay minimizes channel-to-channel skew, enabling synchronized 16-bit+ data capture across multiple sensors.

Battery Management System (BMS)

Traction Inverter Control

Use Scenario: Isolating cell voltage monitoring and pack communication between high-voltage battery stack and low-voltage MCU.

IC Role / Device Role / Timing Role: Six-channel digital isolator providing galvanic separation for analog front-end SPI data and fault signaling across 400–800 V DC bus.

Use Value: 6000 VRMS rating and AEC-Q100 qualification ensure long-term reliability in automotive battery enclosures with thermal cycling and vibration.

Use Scenario: Transmitting PWM gate signals and feedback from IGBT/SiC drivers to controller in electric vehicle powertrain.

IC Role / Device Role / Timing Role: High-speed, low-jitter isolator preserving edge timing of 20–100 kHz switching waveforms with <3.5 ns pulse distortion.

Use Value: 100 kV/µs CMTI prevents false triggering during high-dI/dt switching events, improving inverter efficiency and safety.

Industrial Motor Drive

Isolated ADC/DAC Interface

Use Scenario: Isolating encoder feedback, current sensing, and safety interlock signals in servo drives operating at 690 V AC mains.

IC Role / Device Role / Timing Role: Bidirectional 6-channel isolator enabling full-duplex position loop communication and hardware fault reporting across isolation barrier.

Use Value: –40 to 125 °C operation and reinforced insulation meet IEC 61800-5-1 requirements for drive safety integrity levels (SIL2).

Use Scenario: Interfacing precision isolated sigma-delta ADCs (e.g., AMC130x) and DACs to host processors in programmable logic controllers.

IC Role / Device Role / Timing Role: Low-propagation-delay isolator maintaining timing coherence between sampling clocks and data lines in multi-channel acquisition systems.

Use Value: 10 ns typical propagation delay minimizes channel-to-channel skew, enabling synchronized 16-bit+ data capture across multiple sensors.

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital isolator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADUM6603ARIZ-RL	6-channel, 6000 VRMS, but integrated isolated DC-DC converter (3.3 V output); higher quiescent current (1.5 mA/side); no AEC-Q100 rating.	Preferred where auxiliary isolated power is needed; unsuitable for automotive due to lack of AEC-Q100 qualification.	Choose ADUM6603ARIZ-RL only if isolated bias supply is required and automotive qualification is not mandatory.
ISO6763RQWR	6-channel, 5000 VRMS (not 6000 VRMS); lower CMTI (85 kV/µs); same AEC-Q100 Grade 1; 10 ns propagation delay.	Acceptable for non-reinforced 5000 VRMS systems (e.g., industrial PLCs), but insufficient for 6000 VRMS automotive BMS per ISO 6469-3.	Choose ISO6763RQWR for cost-sensitive industrial applications where 5000 VRMS meets safety margin requirements.

Compared with ADUM6603ARIZ-RL and ISO6763RQWR, SI86S663BC-IS1R uniquely delivers 6000 VRMS reinforced isolation with AEC-Q100 Grade 0 qualification, making it the only option validated for high-voltage battery systems in battery electric vehicles requiring full compliance with ISO 6469-3 and UN R100.

Availability

SI86S663BC-IS1R is available at Aetrix Electronics and suitable for battery management systems, traction inverters, industrial motor drives, and isolated ADC/DAC interfaces requiring stable component supply and automotive-grade lifecycle assurance.

Supply support for SI86S663BC-IS1R 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-speed galvanic isolation in automotive electrification and industrial automation-emphasizing reinforced safety, low jitter, and extended temperature operation.

FAQ

What is the isolation rating and safety certification status of SI86S663BC-IS1R?

SI86S663BC-IS1R provides 6000 VRMS isolation per UL 1577 and is certified to IEC 60747-17 (reinforced), CSA 62368-1/60601-1, and CQC GB4943.1. These certifications are complete and active-not pending-making SI86S663BC-IS1R suitable for final design in medical and automotive systems without further component-level safety validation.

Does SI86S663BC-IS1R support fail-safe output configuration, and how is it implemented?

Yes, SI86S663BC-IS1R offers factory-configurable fail-safe output polarity (default high or default low) during VDD1 loss while VDD2 remains powered. This behavior is set at manufacturing via ordering option code and is not user-programmable in-circuit. The setting determines output state in undervoltage lockout conditions, critical for safe shutdown in battery management systems.

What are the supply voltage requirements and power consumption characteristics of SI86S663BC-IS1R?

SI86S663BC-IS1R operates from 2.25 V to 5.5 V on both VDD1 and VDD2 sides independently. At 5 V and 0 Hz, typical supply current is 0.70 mA on Side A and 2.47 mA on Side B (SI86S663B variant). Power scales with data rate and channel count; no internal regulator or DC-DC converter is included-external bypass capacitors (0.1 µF + 10 µF) are mandatory.

How does SI86S663BC-IS1R handle power-up and undervoltage conditions on either side?

SI86S663BC-IS1R features independent UVLO and reset monitors per side. When VDD1 or VDD2 falls below ~2.05 V (UVLO–), outputs on that side enter high-impedance or default state. A dedicated ~1.7 V reset threshold triggers full configuration reload upon recovery. Startup time from unpowered to valid output is 0.3 ms, with 100 kΩ weak pulldown active until stabilization.

Is SI86S663BC-IS1R pin-compatible with other members of the Si86S6xx family, such as SI86S660 or SI86S662?

Yes, SI86S663BC-IS1R shares identical WB SOIC-16 pinout and footprint with SI86S660, SI86S661, SI86S662, and SI86S664 within the Si86S66x subfamily. All variants feature A1–A6 and B1–B6 I/O mapping, EN1/EN2 enable pins, and common power/ground placement-enabling drop-in replacement for channel-count or fail-safe option changes without PCB revision.

SI86S663BC-IS1R Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: -

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Capacitive Coupling

Type:: General Purpose

Isolated Power:: No

Number of Channels:: 6

Inputs - Side 1/Side 2:: 3/3

Channel Type:: Unidirectional

Voltage - Isolation:: 3750Vrms

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

SI86S663BC-IS1R FAQ

1.How can I place an order for SI86S663BC-IS1R through Aetrix?

Please submit a Request for Quotation (RFQ) for SI86S663BC-IS1R 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 SI86S663BC-IS1R reliable?

The price and inventory of SI86S663BC-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S663BC-IS1R is usually 5 days.

3.What payment methods are accepted for SI86S663BC-IS1R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S663BC-IS1R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI86S663BC-IS1R?

SI86S663BC-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI86S663BC-IS1R 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 SI86S663BC-IS1R?

For technical support, including SI86S663BC-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S663BC-IS1R requirements.

6.How does Aetrix verify that SI86S663BC-IS1R is sourced from the original manufacturer or authorized distributors?

All SI86S663BC-IS1R 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 SI86S663BC-IS1R meets industry standards.

7.What is the process for return or replacement of SI86S663BC-IS1R?

All SI86S663BC-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S663BC-IS1R, 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 SI86S663BC-IS1R part is unused and in its original packaging.

Return procedure for SI86S663BC-IS1R:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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