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Home > Products > Isolators > Digital Isolators

Skyworks Solutions Inc. SI86S602AC-IS

Name: SI86S602AC-IS
Brand: Skyworks Solutions Inc.
SKU: SI86S602AC-IS
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI86S602AC-IS

Manufacturer:: Skyworks Solutions Inc.

Category:: Digital Isolators

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: SI86S602AC-IS.pdf

Description:: 3.75 KVRMS, I2C ISOLATOR, 1 BI-

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SI86S602AC-IS from Skyworks Solutions is a bidirectional I²C isolator with one unidirectional non-I²C channel, designed for galvanic isolation of SMBus and I²C interfaces in high-reliability systems. It supports 1.7 MHz I²C clock rates, delivers 35 mA sink capability on open-drain SDA/SCL channels, and provides 3.75 kV_RMS isolation in an SOIC-8 narrow-body package - enabling safe communication between isolated power domains in battery management and motor control applications.

For engineers reviewing the SI86S602AC-IS datasheet, SI86S602AC-IS pinout, SI86S602AC-IS application, or SI86S602AC-IS equivalent, this device addresses critical I²C bus isolation challenges including latch-up prevention, hot-swap compatibility, and robust operation across –40°C to +125°C while maintaining low power (2.5–3.8 mA at 1.7 MHz) and short propagation delays (≤44 ns).

Technical Context

The SI86S602AC-IS implements RF-based galvanic isolation with proprietary Skyworks semiconductor barrier technology, eliminating optical coupling limitations. Its anti-latch architecture ensures stable bidirectional SDA/SCL operation without external circuitry by enforcing ΔV_SDA/ΔV_SCL ≥ 50 mV between Side A output low (typ. 540 mV) and input threshold (typ. 410 mV).

Side A handles bidirectional I²C signaling with open-drain outputs; Side B provides unidirectional digital isolation for auxiliary signals like RESET or INT. Both sides feature independent undervoltage lockout (UVLO), 3.0–5.5 V supply range, and hot-swap protection against data corruption during live insertion into powered systems.

Key Specifications

Parameter	Value and Actual Design Meaning
I²C Bus Speed	Up to 1.7 MHz - enables full-speed I²C communication without timing bottlenecks in real-time power monitoring.
Isolation Rating	3.75 kV_RMS - meets reinforced insulation requirements per IEC 60950-1 and UL 1577 for industrial safety compliance.
Output Sink Current	35 mA - drives standard I²C pull-up networks (e.g., 1.4 kΩ @ 3.3 V) without external buffers.
Supply Voltage Range	3.0–5.5 V - interoperates with both 3.3 V and 5 V logic domains on either side of isolation barrier.
Operating Temperature	–40°C to +125°C - qualified for under-hood automotive and industrial environments per AEC-Q100.
Propagation Delay	≤44 ns (Side A→B, 5 V) - preserves I²C timing margins even at maximum clock rate.
Power Consumption	2.5–3.8 mA per side at 1.7 MHz - reduces thermal load in space-constrained isolated power supplies.

Pinout & Package

SI86S602AC-IS is housed in an 8-pin narrow-body SOIC package (5.3 mm × 4.0 mm, 1.27 mm pitch) with creepage/clearance > 5.5 mm, compliant with RoHS and JEDEC reflow standards (260 °C peak).

Pin/Terminal	Circuit Role	Design Meaning
1 (AVDD)	Side A Power Supply	3.0–5.5 V supply for bidirectional I²C interface; requires 0.1 µF bypass capacitor to AGND.
2 (ASDA)	Side A Bidirectional SDA	Open-drain I²C data line with 35 mA sink; connects to master/slave SDA via pull-up resistor.
3 (ASCL)	Side A Bidirectional SCL	Open-drain I²C clock line with 35 mA sink; supports clock stretching and hot-swap arbitration.
4 (AGND)	Side A Ground Reference	Return path for AVDD; must be isolated from BGND by ≥5.5 mm PCB spacing.
5 (BGND)	Side B Ground Reference	Return path for BVDD; forms galvanic barrier with AGND; no electrical continuity permitted.
6 (BSCL)	Side B Unidirectional SCL	CMOS-output-only channel for auxiliary signal (e.g., interrupt or reset); not bidirectional.
7 (BSDA)	Side B Bidirectional SDA	Open-drain I²C data line mirroring ASCL/ASDA behavior; completes isolated I²C link.
8 (BVDD)	Side B Power Supply	3.0–5.5 V supply for isolated domain; independent UVLO prevents metastable states during power sequencing.

Key Features

Feature	Design Value
Anti-latch bidirectional I²C channels	Guarantees stable bus operation without external feedback suppression circuits by enforcing ≥50 mV margin between VOL and VIL on Side A.
Hot-swap protection	Prevents data corruption when SI86S602AC-IS is inserted into a live system via internal power-fail detection and output Hi-Z state during UVLO.
Independent dual-supply UVLO	Each side (A/B) monitors its own VDD; allows asymmetric power sequencing and avoids false resets during brown-out conditions.
Reinforced insulation certification	UL 1577, CSA 5A, VDE 0884-10 (Si863xxT variants), and IEC 60950-1 compliance ensures end-equipment safety certification readiness.
Automotive-grade qualification	AEC-Q100 Grade 1 qualification, AIAG-compliant PPAP documentation, and IMDS/CAMDS support enable use in OBCs and BMS.

Applications

Battery Management Systems	Motor Control Systems
Use Scenario: Isolating I²C communication between MCU and cell monitor ICs in high-voltage EV battery packs. IC Role / Device Role / Timing Role: SI86S602AC-IS acts as a galvanically isolated I²C repeater, preventing ground-loop currents while preserving clock stretching for accurate voltage/temperature sampling. Use Value: Enables safe, noise-immune telemetry at up to 1.7 MHz across 3.75 kV_RMS barrier - critical for ASIL-B functional safety compliance.	Use Scenario: Isolating encoder feedback and fault signaling between motor driver ICs and host controller in servo drives. IC Role / Device Role / Timing Role: SI86S602AC-IS isolates bidirectional I²C configuration writes and unidirectional FAULT/INT asserts from high-noise power stages. Use Value: Eliminates latch-up risk during PWM switching transients while supporting <44 ns propagation delay for real-time current loop updates.
Power over Ethernet (PoE)	Industrial PLC I/O Modules
Use Scenario: Galvanic isolation of I²C management interface between PoE PSE controller and powered device (PD) microcontroller. IC Role / Device Role / Timing Role: SI86S602AC-IS bridges isolated domains while handling I²C clock stretching required for PD classification and power negotiation. Use Value: Meets IEEE 802.3af/at safety requirements with 3.75 kV_RMS rating and –40°C to +125°C operation in compact SOIC-8 footprint.	Use Scenario: Isolating sensor calibration data exchange and watchdog signaling between field-side analog front-end and controller-side FPGA. IC Role / Device Role / Timing Role: SI86S602AC-IS provides dual-role isolation: bidirectional I²C for EEPROM reads/writes and unidirectional INT for fault reporting. Use Value: Reduces bill-of-materials by replacing two discrete isolators; maintains 10 Mbps non-I²C channel speed for fast status updates.

Battery Management Systems

Motor Control Systems

Use Scenario: Isolating I²C communication between MCU and cell monitor ICs in high-voltage EV battery packs.

IC Role / Device Role / Timing Role: SI86S602AC-IS acts as a galvanically isolated I²C repeater, preventing ground-loop currents while preserving clock stretching for accurate voltage/temperature sampling.

Use Value: Enables safe, noise-immune telemetry at up to 1.7 MHz across 3.75 kV_RMS barrier - critical for ASIL-B functional safety compliance.

Use Scenario: Isolating encoder feedback and fault signaling between motor driver ICs and host controller in servo drives.

IC Role / Device Role / Timing Role: SI86S602AC-IS isolates bidirectional I²C configuration writes and unidirectional FAULT/INT asserts from high-noise power stages.

Use Value: Eliminates latch-up risk during PWM switching transients while supporting <44 ns propagation delay for real-time current loop updates.

Power over Ethernet (PoE)

Industrial PLC I/O Modules

Use Scenario: Galvanic isolation of I²C management interface between PoE PSE controller and powered device (PD) microcontroller.

IC Role / Device Role / Timing Role: SI86S602AC-IS bridges isolated domains while handling I²C clock stretching required for PD classification and power negotiation.

Use Value: Meets IEEE 802.3af/at safety requirements with 3.75 kV_RMS rating and –40°C to +125°C operation in compact SOIC-8 footprint.

Use Scenario: Isolating sensor calibration data exchange and watchdog signaling between field-side analog front-end and controller-side FPGA.

IC Role / Device Role / Timing Role: SI86S602AC-IS provides dual-role isolation: bidirectional I²C for EEPROM reads/writes and unidirectional INT for fault reporting.

Use Value: Reduces bill-of-materials by replacing two discrete isolators; maintains 10 Mbps non-I²C channel speed for fast status updates.

Equivalent & Alternatives

The following parts are listed as comparable options for similar I²C isolator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADUM1250ARZ	2-channel, 1 Mbps max I²C speed; 2.5 kV_RMS isolation; CMOS input/output (no open-drain)	Lacks native open-drain I²C drivers - requires external pull-ups and level-shifting for legacy I²C buses	Choose ADUM1250ARZ only if system operates ≤1 MHz and uses active-pull I²C topology.
ISO1540DR	2-channel, 1 MHz max I²C speed; 2.5 kV_RMS isolation; integrated anti-latch but no auxiliary channel	No unidirectional non-I²C channel - cannot replace SI86S602AC-IS's BSCL functionality without adding discrete logic	Select ISO1540DR only for pure I²C isolation where auxiliary signal routing is handled separately.

Compared with ADUM1250ARZ and ISO1540DR, SI86S602AC-IS uniquely combines 1.7 MHz I²C support, 35 mA open-drain drive, 3.75 kV_RMS isolation, and a dedicated unidirectional channel - making it the only drop-in solution for automotive BMS and industrial PoE designs requiring all four capabilities simultaneously.

Availability

SI86S602AC-IS is available at Aetrix Electronics and suitable for battery management systems, motor control systems, Power over Ethernet (PoE) infrastructure, and industrial PLC I/O modules requiring stable component supply across extended temperature and safety-critical operating conditions.

Supply support for SI86S602AC-IS 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 leader in analog semiconductors, specializing in RF, timing, and isolation technologies for high-performance wireless and wired infrastructure.

The SI860x family - including SI86S602AC-IS - was engineered specifically for robust, low-latency galvanic isolation of I²C/SMBus interfaces in automotive, industrial, and computing applications demanding AEC-Q100 qualification and reinforced safety certification.

FAQ

What is the maximum I²C clock frequency supported by SI86S602AC-IS?

The SI86S602AC-IS supports I²C bus speeds up to 1.7 MHz, verified across the full –40°C to +125°C operating range and 3.0–5.5 V supply. This enables full-speed communication with modern sensors and power management ICs without timing degradation or added latency - a key advantage over alternatives limited to 1 MHz.

Does SI86S602AC-IS require external components for basic I²C isolation?

No. SI86S602AC-IS integrates anti-latch circuitry and open-drain drivers, requiring only standard I²C pull-up resistors (e.g., 1.4 kΩ on 3.3 V side). Unlike optocoupler-based solutions, it needs no external logic, level shifters, or feedback suppression networks - reducing PCB area and design complexity.

How does SI86S602AC-IS handle power loss on one side of the isolation barrier?

When AVDD or BVDD drops below UVLO thresholds, SI86S602AC-IS places affected outputs in Hi-Z state while maintaining isolation integrity. Side A I²C lines go Hi-Z if BVDD fails; Side B non-I²C outputs retain last valid state briefly before settling - preventing bus contention and ensuring graceful fail-safe behavior during asymmetric power faults.

Is SI86S602AC-IS certified for automotive applications?

Yes. SI86S602AC-IS carries AEC-Q100 Grade 1 qualification, AIAG-compliant PPAP documentation, and IMDS/CAMDS listings. Its "-A" suffix denotes automotive-grade manufacturing flow, including zero-defect methodology and statistical process controls - making it suitable for on-board chargers and battery electric vehicle systems.

What safety certifications apply to SI86S602AC-IS?

SI86S602AC-IS is UL 1577 recognized (3.75 kV_RMS), CSA Component Notice 5A approved, and certified to IEC 60950-1 reinforced insulation standards. It also meets IEC 61010-1 and GB4943.1 for industrial test equipment and medical auxiliary systems requiring high-voltage isolation integrity.

SI86S602AC-IS Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: Si86S60x

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Technology:: Capacitive Coupling

Type:: General Purpose

Isolated Power:: Yes

Number of Channels:: 2

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

Channel Type:: Bidirectional, Unidirectional

Voltage - Isolation:: 3750Vrms

Common Mode Transient Immunity (Min):: 100kV/µs

Data Rate:: 150Mbps

Propagation Delay tpLH / tpHL (Max):: 15ns, 15ns

Pulse Width Distortion (Max):: 3ns

Rise / Fall Time (Typ):: 2.5ns, 2.5ns

Voltage - Supply:: 3V ~ 5.5V

Grade:: -

Qualification:: -

Operating Temperature:: -40°C ~ 125°C

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

SI86S602AC-IS FAQ

1.How can I place an order for SI86S602AC-IS through Aetrix?

Please submit a Request for Quotation (RFQ) for SI86S602AC-IS 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 SI86S602AC-IS reliable?

The price and inventory of SI86S602AC-IS are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S602AC-IS is usually 5 days.

3.What payment methods are accepted for SI86S602AC-IS?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S602AC-IS transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI86S602AC-IS?

SI86S602AC-IS orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI86S602AC-IS 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 SI86S602AC-IS?

For technical support, including SI86S602AC-IS datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S602AC-IS requirements.

6.How does Aetrix verify that SI86S602AC-IS is sourced from the original manufacturer or authorized distributors?

All SI86S602AC-IS 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 SI86S602AC-IS meets industry standards.

7.What is the process for return or replacement of SI86S602AC-IS?

All SI86S602AC-IS units undergo pre-shipment inspection (PSI). If there is an issue with SI86S602AC-IS, 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 SI86S602AC-IS part is unused and in its original packaging.

Return procedure for SI86S602AC-IS:

1.Submit a request within 90 days.

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

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