Skyworks Solutions Inc. SI86S662EE-AS2R

Overview

SI86S662EE-AS2R from Skyworks Solutions is a 6-channel, reinforced digital isolator with 6000 VRMS isolation rating, 150 Mbps data rate, and AEC-Q100 qualification for automotive systems. It features dual-side supply (2.25–5.5 V), 10 ns typical propagation delay, and fail-safe output configuration (default low) for isolated communication in battery management and traction inverters.

For engineers reviewing the SI86S662EE-AS2R datasheet, SI86S662EE-AS2R pinout, SI86S662EE-AS2R application, or SI86S662EE-AS2R equivalent, key selection criteria include reinforced IEC 60747-17 certification, 125 °C operating temperature, tri-state outputs with enable, Schmitt-trigger + CMOS inputs, and sleep mode support via SMb pin.

Technical Context

The SI86S662EE-AS2R implements RF-based on/off keying across a semiconductor isolation barrier-eliminating startup initialization and enabling robust noise immunity. Its architecture supports independent UVLO and reset monitoring per side (VDD1/VDD2), with RSTB thresholds at ~1.7 V and 100 kΩ weak pulldown during unpowered states.

This device delivers bidirectional channel operation with six isolated I/O pairs (A1–A6/B1–B6), active-high EN1/EN2 enables, and an SMb pin for sleep-mode control. It meets reinforced insulation requirements per UL 1577 (6000 VRMS), CSA 62368-1/60601-1, VDE 60747-17, and CQC GB4943.1.

Key Specifications

Pinout & Package

SI86S662EE-AS2R uses a WB SOIC-16 package (wide-body, 10.3 mm creepage) with reinforced insulation. Pin 1 is marked by a dot; pin 16 is VDD2. All pins are electrically isolated across the internal semiconductor barrier.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM6601ARIZ-RL and ISO6760FQDWR, SI86S662EE-AS2R uniquely combines 150 Mbps speed, AEC-Q100 qualification, 6000 VRMS reinforced isolation, and SMb-controlled sleep mode-making it the only option for high-bandwidth, safety-critical automotive traction systems.

Availability

SI86S662EE-AS2R is available at Aetrix Electronics and suitable for onboard chargers, battery management systems, and traction inverters requiring stable component supply across automotive production lifecycles.

Supply support for SI86S662EE-AS2R 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 for high-reliability markets.

The Si86S6xx family was engineered specifically for automotive and industrial isolation challenges-delivering reinforced safety certification, high CMTI, and low-latency performance in harsh electromagnetic environments.

FAQ

What is the isolation voltage rating of the SI86S662EE-AS2R and which standards does it meet?

The SI86S662EE-AS2R has a 6000 VRMS isolation rating per UL 1577 for 1 minute and is certified to reinforced insulation standards IEC 60747-17 (VDE), CSA 62368-1/60601-1, and CQC GB4943.1. This enables its use in 1000 V DC battery systems without additional creepage reinforcement. The SI86S662EE-AS2R achieves this through a monolithic semiconductor isolation barrier with 10.3 mm WB SOIC package spacing.

Does the SI86S662EE-AS2R support fail-safe operation, and how is it configured?

Yes, the SI86S662EE-AS2R offers a factory-configured fail-safe mode where outputs default to logic low during VDD1 loss. This behavior is fixed per ordering code (the "E" suffix in SI86S662EE-AS2R denotes default-low). No external circuitry is needed-the SI86S662EE-AS2R automatically asserts low on B1–B6 when VDD1 drops below 2.1 V, ensuring safe gate driver shutdown in BMS applications.

What is the purpose of the SMb pin on the SI86S662EE-AS2R, and how does it affect power consumption?

The SMb (Sleep Mode) pin is an active-low control input that places the SI86S662EE-AS2R into ultra-low-power sleep mode, reducing quiescent current to ≤750 µA per side. While asleep, one isolation channel remains active to monitor SMb state and wake the device when SMb transitions high. This feature is essential for always-on BMS monitoring circuits where standby power must be minimized without sacrificing responsiveness.

Can the SI86S662EE-AS2R replace optocouplers in existing designs, and what layout changes are required?

Yes, the SI86S662EE-AS2R can directly replace up to six optocouplers in WB SOIC-16 footprint-constrained layouts. Required changes include adding 0.1 µF + 10 µF bypass capacitors at VDD1/GND1 and VDD2/GND2, routing EN1/EN2 for tri-state control, and connecting SMb to a system sleep controller. No external pull-ups or level shifters are needed due to native 2.25–5.5 V compatibility and CMOS/Schmitt inputs.

What is the maximum data rate supported by the SI86S662EE-AS2R, and how does it perform at high temperature?

The SI86S662EE-AS2R supports DC to 150 Mbps data rate across its full –40 to 125 °C operating range. At 125 °C and 5 V supply, propagation delay remains ≤12 ns (vs. 10 ns typical at 25 °C), and pulse width distortion stays ≤4.5 ns-ensuring reliable high-speed SPI, QSPI, and PWM isolation in under-hood automotive environments without derating.