Skyworks Solutions Inc. SI86S641EE-IS2R

Overview

SI86S641EE-IS2R from Skyworks Solutions is a 4-channel, reinforced digital isolator with 6000 VRMS isolation rating, 150 Mbps data rate, and AEC-Q100 qualification for automotive use. It features bidirectional signal isolation across an RF-based semiconductor barrier, Schmitt-trigger inputs, tri-state outputs with enable, and fail-safe default-high output mode. It is used in battery management systems and traction inverters where high noise immunity and safety-certified galvanic separation are required.

For engineers reviewing the SI86S641EE-IS2R datasheet, SI86S641EE-IS2R pinout, SI86S641EE-IS2R application, or SI86S641EE-IS2R equivalent, key selection criteria include reinforced IEC 60747-17 certification, 10 ns typical propagation delay, –40 to 125 °C operating range, and WB SOIC-16 package with 8.3 mm creepage/clearance.

Technical Context

The SI86S641EE-IS2R implements RF-based on/off keying modulation across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity. Its architecture supports independent undervoltage lockout (UVLO) and reset monitoring per side (VDD1/VDD2), with 100 kΩ weak pulldown during unpowered states and configurable fail-safe output polarity.

It integrates four isolated bidirectional channels with CMOS/Schmitt-trigger input thresholds, tri-state output control via EN1/EN2 pins, and precise timing: 10 ns typical propagation delay, 3.5 ns pulse width distortion, and 100 kV/µs transient immunity. The device operates from 2.25–5.5 V supplies on both sides and supports sleep-mode entry via external control only in SM-series variants-not applicable to SI86S641EE-IS2R.

Key Specifications

Pinout & Package

SI86S641EE-IS2R uses a wide-body SOIC-16 (WB SOIC-16) package with 10.3 mm body width, 8.3 mm creepage and clearance, and reinforced insulation barrier. Pin numbering follows standard SOIC-16 layout with Side A (VDD1/GND1) and Side B (VDD2/GND2) separated by the isolation barrier.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM4401BRWZ and ISO6741FDWR, SI86S641EE-IS2R delivers higher data throughput, certified reinforced isolation for automotive safety, and guaranteed fail-safe behavior-making it uniquely suited for traction inverter and BMS signal isolation where functional safety and noise resilience are mandatory.

Availability

SI86S641EE-IS2R 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 SI86S641EE-IS2R 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 for wireless, automotive, and industrial markets.

The Si86S6xx family is designed for high-reliability galvanic isolation in safety-critical systems-targeting automotive electrification, industrial automation, and medical equipment where reinforced insulation and AEC-Q100 compliance are essential.

FAQ

What is the isolation rating and safety certification status of SI86S641EE-IS2R?

SI86S641EE-IS2R provides 6000 VRMS isolation for 1 minute per UL 1577 and is certified to IEC 60747-17 (reinforced insulation), CSA 62368-1/60601-1, and CQC GB4943.1. These approvals are documented in Skyworks' official safety reports and apply directly to the SI86S641EE-IS2R part number in its WB SOIC-16 package.

Does SI86S641EE-IS2R support fail-safe output configuration, and how is it implemented?

Yes, SI86S641EE-IS2R is ordered with default-high fail-safe output (denoted by "E" in the suffix). When VDD1 is unpowered but VDD2 remains active, outputs B1–B4 remain logic high-ensuring predictable state during input-side brownout. This behavior is hard-coded per ordering option and does not require external configuration.

What are the supply voltage requirements and operating temperature range for SI86S641EE-IS2R?

SI86S641EE-IS2R operates with 2.25–5.5 V on both VDD1 and VDD2, independently. It is rated for –40 to 125 °C ambient operation and qualified to AEC-Q100 Grade 0, making it suitable for under-hood automotive locations and industrial environments with extreme thermal cycling.

How does SI86S641EE-IS2R achieve high noise immunity, and what is its CMTI specification?

SI86S641EE-IS2R achieves high noise immunity through RF-based on/off keying modulation and Schmitt-trigger inputs with >0.15 × VDD hysteresis. Its common-mode transient immunity is specified at ≥100 kV/µs minimum-validated per IEC 61000-4-4-and enables reliable operation in high dv/dt environments such as motor drives and SMPS.

Is SI86S641EE-IS2R pin-compatible with other devices in the Si86S6xx family, and what package does it use?

SI86S641EE-IS2R uses the WB SOIC-16 package (10.3 mm width) and shares identical pinout with SI86S640EE-IS2R and SI86S642EE-IS2R. All Si86S64x variants in WB SOIC-16 are pin-compatible-differences are limited to fail-safe polarity (E = high, D = low) and channel directionality (fixed bidirectional in S64x series).