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Home > Products > Isolators > Digital Isolators

Skyworks Solutions Inc. SI86S602AE-IS4R

Name: SI86S602AE-IS4R
Brand: Skyworks Solutions Inc.
SKU: SI86S602AE-IS4R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI86S602AE-IS4R

Manufacturer:: Skyworks Solutions Inc.

Category:: Digital Isolators

Package:: 8-SOIC (0.295", 7.50mm Width)

Datasheet:: SI86S602AE-IS4R.pdf

Description:: 6.0 KVRMS, I2C ISOLATOR, 1 BI- A

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SI86S602AE-IS4R from Skyworks Solutions is a bidirectional I²C isolator with one unidirectional non-I²C channel, designed for galvanic isolation of I²C/SMBus buses in high-reliability systems. It delivers 1.7 MHz I²C clock support, 5.0 kV_RMS isolation rating, open-drain SDA/SCL outputs with 35 mA sink capability, and operates across –40 to +125 °C - enabling use in battery management systems and on-board chargers.

For engineers reviewing the SI86S602AE-IS4R datasheet, SI86S602AE-IS4R pinout, SI86S602AE-IS4R application, or SI86S602AE-IS4R equivalent, key selection considerations include its AEC-Q100-qualified automotive-grade construction, SOIC-16 wide-body package, dual-supply operation (3.0–5.5 V), anti-latch bidirectional I²C architecture, and integrated protection against hot-swap data corruption.

Technical Context

The SI86S602AE-IS4R implements RF-based galvanic isolation with proprietary Skyworks semiconductor barrier technology, eliminating optical coupling limitations. Its bidirectional I²C channels feature asymmetric logic thresholds (Side A VOL = 540 mV typ., VIL = 410 mV typ.) to prevent bus latching, while the unidirectional channel supports up to 10 Mbps with CMOS-compatible input/output characteristics.

Each side (A and B) includes independent undervoltage lockout (UVLO) circuitry, ensuring safe startup/shutdown behavior when either AVDD or BVDD falls below 3.0 V. The device maintains functional integrity during hot-swap events via internal protection circuits that suppress data errors when an unpowered unit is inserted into a live system.

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 power management interfaces.
Isolation Rating	5.0 kV_RMS - meets reinforced insulation requirements per IEC 60950-1 and VDE 0884-10 for safety-critical automotive and industrial applications.
Supply Voltage Range	3.0–5.5 V per side - supports interoperability with both 3.3 V and 5 V microcontrollers and peripherals without level-shifting.
Operating Temperature	–40 to +125 °C - qualified for under-hood automotive environments including battery electric vehicle traction inverters.
SDA/SCL Sink Current	35 mA - ensures robust drive strength for standard I²C pull-up configurations (0.5–3 mA range) and reliable low-level assertion.
Unidirectional Channel Rate	10 Mbps - supports high-speed auxiliary signals such as reset, interrupt, or status flags alongside isolated I²C traffic.
AEC-Q100 Grade	Qualified to Grade 0 - confirms suitability for automotive applications requiring operation up to +150 °C junction temperature.

Pinout & Package

SI86S602AE-IS4R is housed in a RoHS-compliant 16-pin wide-body SOIC package (WB SOIC-16), offering 8.3 mm creepage and clearance for reinforced insulation compliance. Pin assignments follow the Si8602/05/06 SOIC-16 layout with dedicated A-side and B-side supply, ground, and signal terminals.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4	A-side I/O: ASCL, ASDA, AGND, AVDD	Left-side interface for master-side I²C bus; AVDD powers A-side logic and isolation transmitter.
5–8	Unidirectional Channel Inputs (A-side)	Accepts up to two forward-direction digital signals (e.g., RESET, INT) referenced to AVDD/AGND.
9–12	Unidirectional Channel Outputs (B-side)	Drives corresponding B-side signals with CMOS output stage; compatible with 3.3 V or 5 V loads.
13–16	B-side I/O: BSCL, BSDA, BGND, BVDD	Right-side interface for slave-side I²C bus; BVDD powers B-side receiver and output drivers.

Key Features

Feature	Design Value
Anti-latch bidirectional I²C architecture	Prevents bus lockup by enforcing ΔV_SDA/ΔV_SCL ≥ 50 mV between Side A output low and input threshold - eliminates need for external latch-prevention circuitry.
Hot-swap tolerant isolation	Internal protection circuitry ensures no data corruption when SI86S602AE-IS4R is inserted into a powered system - critical for modular battery pack servicing.
Independent UVLO per side	AVDD and BVDD each have dedicated undervoltage detection; allows graceful shutdown of one side without disrupting the other - improves fault containment in dual-domain systems.
RF-based isolation barrier	Replaces optocouplers with shorter propagation delay (≤45 ns), lower power consumption (≤3.8 mA at 1.7 MHz), and superior EMI immunity (>50 kV/µs transient immunity).
Automotive-grade manufacturing flow	Produced using AIAG-compliant PPAP, IMDS/CAMDS material declarations, and zero-defect methodology - satisfies OEM requirements for EV powertrain components.

Applications

Battery Management System (BMS)	On-Board Charger (OBC)
Use Scenario: Isolating I²C communication between MCU and cell monitoring ICs across high-voltage battery stacks (e.g., 400–800 V DC). IC Role / Device Role / Timing Role: SI86S602AE-IS4R acts as a galvanically isolated I²C repeater with integrated anti-latch logic, preserving clock stretching and ACK/NACK timing integrity. Use Value: Enables safe, noise-immune telemetry collection without compromising I²C protocol compliance or introducing bus contention risks.	Use Scenario: Separating control logic (low-voltage MCU domain) from high-side gate drivers and AC/DC sensing circuits in 11 kW OBC modules. IC Role / Device Role / Timing Role: SI86S602AE-IS4R provides bidirectional I²C isolation for configuration registers and unidirectional isolation for fault signaling (e.g., overtemperature interrupt). Use Value: Eliminates ground loops between primary and secondary sides while supporting real-time diagnostics and parameter updates at full I²C speed.
Traction Inverter Control	Charging Station Power Module
Use Scenario: Interfacing isolated current/voltage sensors and gate driver feedback lines with central inverter controller in BEV drivetrain systems. IC Role / Device Role / Timing Role: SI86S602AE-IS4R serves as the isolated I²C backbone for sensor fusion data aggregation, with auxiliary channel relaying PWM fault flags. Use Value: Maintains deterministic latency (<45 ns propagation) and thermal stability (–40 to +125 °C) required for torque-control loop integrity.	Use Scenario: Isolating communication between station controller and modular DC-DC converter units operating at different ground potentials in multi-port charging stations. IC Role / Device Role / Timing Role: SI86S602AE-IS4R isolates SMBus-configured power converters while forwarding thermal shutdown alerts via its unidirectional channel. Use Value: Supports UL 1577 and VDE 0884-10 certification of the entire station, reducing system-level safety validation effort.

Battery Management System (BMS)

On-Board Charger (OBC)

Use Scenario: Isolating I²C communication between MCU and cell monitoring ICs across high-voltage battery stacks (e.g., 400–800 V DC).

IC Role / Device Role / Timing Role: SI86S602AE-IS4R acts as a galvanically isolated I²C repeater with integrated anti-latch logic, preserving clock stretching and ACK/NACK timing integrity.

Use Value: Enables safe, noise-immune telemetry collection without compromising I²C protocol compliance or introducing bus contention risks.

Use Scenario: Separating control logic (low-voltage MCU domain) from high-side gate drivers and AC/DC sensing circuits in 11 kW OBC modules.

IC Role / Device Role / Timing Role: SI86S602AE-IS4R provides bidirectional I²C isolation for configuration registers and unidirectional isolation for fault signaling (e.g., overtemperature interrupt).

Use Value: Eliminates ground loops between primary and secondary sides while supporting real-time diagnostics and parameter updates at full I²C speed.

Traction Inverter Control

Charging Station Power Module

Use Scenario: Interfacing isolated current/voltage sensors and gate driver feedback lines with central inverter controller in BEV drivetrain systems.

IC Role / Device Role / Timing Role: SI86S602AE-IS4R serves as the isolated I²C backbone for sensor fusion data aggregation, with auxiliary channel relaying PWM fault flags.

Use Value: Maintains deterministic latency (<45 ns propagation) and thermal stability (–40 to +125 °C) required for torque-control loop integrity.

Use Scenario: Isolating communication between station controller and modular DC-DC converter units operating at different ground potentials in multi-port charging stations.

IC Role / Device Role / Timing Role: SI86S602AE-IS4R isolates SMBus-configured power converters while forwarding thermal shutdown alerts via its unidirectional channel.

Use Value: Supports UL 1577 and VDE 0884-10 certification of the entire station, reducing system-level safety validation effort.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SI8602AD-B-IS	Same Si8602 family, identical pinout and electrical specs; differs only in tape-and-reel packaging (no "R" suffix) and absence of automotive qualification markers.	Industrial-grade variant lacking AEC-Q100 documentation, PPAP, or CAMDS/IMDS support - unsuitable for OEM automotive production.	Select SI86S602AE-IS4R when automotive traceability, zero-defect manufacturing, and full regulatory documentation are mandatory.
ADUM1250ARZ	Analog Devices part offers dual-channel I²C isolation but no unidirectional auxiliary channel; max speed 1 MHz; 2.5 kV_RMS isolation; not AEC-Q100 qualified.	Limited to basic I²C isolation without auxiliary signal support; insufficient isolation voltage and temperature range for traction inverter BMS domains.	Choose SI86S602AE-IS4R where 5.0 kV_RMS, 1.7 MHz, –40 to +125 °C, and auxiliary channel integration are required.

Compared with SI8602AD-B-IS and ADUM1250ARZ, SI86S602AE-IS4R uniquely combines automotive-grade qualification, 5.0 kV_RMS reinforced insulation, 1.7 MHz I²C throughput, and integrated unidirectional channel - making it the only option meeting full OEM requirements for high-voltage EV subsystems.

Availability

SI86S602AE-IS4R is available at Aetrix Electronics and suitable for battery management systems, on-board chargers, traction inverters, and charging station power modules requiring stable component supply across extended temperature and safety-critical operating conditions.

Supply support for SI86S602AE-IS4R 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 and mixed-signal semiconductors, specializing in RF, timing, isolation, and connectivity solutions for high-performance wireless and wired infrastructure.

The Si860x product line was developed specifically to replace optocouplers in I²C/SMBus isolation applications, delivering higher speed, lower power, smaller footprint, and automotive-grade reliability through RF-based semiconductor isolation technology.

FAQ

What is the isolation voltage rating of the SI86S602AE-IS4R?

The SI86S602AE-IS4R is rated for 5.0 kV_RMS isolation per UL 1577 and certified to reinforced insulation standards including VDE 0884-10 and IEC 60950-1. This rating applies for 1 minute at sea level and supports designs requiring enhanced safety separation in automotive battery systems and industrial power supplies. The SI86S602AE-IS4R achieves this with its wide-body SOIC-16 package geometry and proprietary RF isolation barrier.

Does the SI86S602AE-IS4R support I²C clock stretching?

Yes, the SI86S602AE-IS4R fully supports I²C clock stretching - a requirement for slave devices that need additional time to process data before continuing the transaction. Its bidirectional SDA and SCL channels preserve the open-drain behavior and timing margins necessary for compliant clock stretching, as verified in Skyworks' Si860x Electrical Characteristics Table 5.3 and Typical Application Schematics.

What is the purpose of the unidirectional channel in the SI86S602AE-IS4R?

The SI86S602AE-IS4R includes one unidirectional digital channel (forward direction only) intended for auxiliary system signals such as RESET, INTERRUPT, FAULT, or STATUS flags. Unlike the bidirectional I²C lanes, this channel operates at up to 10 Mbps with standard CMOS input/output characteristics, enabling fast, isolated event signaling without consuming I²C bandwidth or requiring protocol translation.

How does the SI86S602AE-IS4R prevent I²C bus latching?

The SI86S602AE-IS4R prevents I²C bus latching through asymmetric logic thresholds on Side A: its output low voltage (VOL ≈ 540 mV typ.) is intentionally higher than its input threshold (VT ≈ 410 mV typ.), ensuring a minimum ΔV of 50 mV. This design eliminates feedback-induced lockup when both sides drive low - a known failure mode in basic unidirectional isolator implementations - and requires no external anti-latch components.

Is the SI86S602AE-IS4R pin-compatible with other Si860x variants?

The SI86S602AE-IS4R shares the same WB SOIC-16 pinout as Si8602AD-B-IS and Si8605AD-B-IS, but is not functionally interchangeable with Si8600 or Si8606 variants due to differing channel counts and directionality. Its pin mapping matches the Si8602/05/06 SOIC-16 layout defined in Skyworks Document 206852A, Section 6.3, and supports drop-in replacement only among parts with identical channel configuration and isolation rating.

SI86S602AE-IS4R Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: Si86S60x

Package/Case:: 8-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

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:: 6000Vrms

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-SSO

SI86S602AE-IS4R FAQ

1.How can I place an order for SI86S602AE-IS4R through Aetrix?

Please submit a Request for Quotation (RFQ) for SI86S602AE-IS4R 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 SI86S602AE-IS4R reliable?

The price and inventory of SI86S602AE-IS4R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI86S602AE-IS4R is usually 5 days.

3.What payment methods are accepted for SI86S602AE-IS4R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI86S602AE-IS4R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI86S602AE-IS4R?

SI86S602AE-IS4R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI86S602AE-IS4R 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 SI86S602AE-IS4R?

For technical support, including SI86S602AE-IS4R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI86S602AE-IS4R requirements.

6.How does Aetrix verify that SI86S602AE-IS4R is sourced from the original manufacturer or authorized distributors?

All SI86S602AE-IS4R 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 SI86S602AE-IS4R meets industry standards.

7.What is the process for return or replacement of SI86S602AE-IS4R?

All SI86S602AE-IS4R units undergo pre-shipment inspection (PSI). If there is an issue with SI86S602AE-IS4R, 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 SI86S602AE-IS4R part is unused and in its original packaging.

Return procedure for SI86S602AE-IS4R:

1.Submit a request within 90 days.

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

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