Skyworks Solutions Inc. SI86S662BB-IU

Overview

SI86S662BB-IU 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 Schmitt-trigger inputs, tri-state outputs with enable, selectable fail-safe default (high/low), and operates across –40 to 125 °C for use in battery management systems and traction inverters.

For engineers reviewing the SI86S662BB-IU datasheet, SI86S662BB-IU pinout, SI86S662BB-IU application, or SI86S662BB-IU equivalent, key selection criteria include reinforced IEC 60747-17 certification, 10 ns typical propagation delay, 3.5 ns pulse width distortion, 100 kV/µs CMTI, and WB SOIC-16 package compatibility with industrial and automotive isolation requirements.

Technical Context

The SI86S662BB-IU implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling robust noise immunity without optical degradation. 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 behavior.

It integrates six bidirectional isolated channels with side-specific enable pins (EN1/EN2), supports simultaneous high-speed signaling up to 150 Mbps, and maintains precise timing integrity with 10 ns propagation delay and 3.5 ns pulse width distortion-critical for SPI, motor control feedback, and isolated ADC/DAC interfaces.

Key Specifications

Pinout & Package

The SI86S662BB-IU is housed in a wide-body SOIC-16 (WB SOIC-16) package with creepage/clearance optimized for 6000 VRMS working voltage. Pin 1 is marked with a dot; pin numbering follows standard SOIC convention with GND1/VDD1 on Side A and GND2/VDD2 on Side B.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM6601ARIZ-RL and ISO6760FDWR, the SI86S662BB-IU delivers 3× higher data rate, certified reinforced insulation for automotive use, and programmable fail-safe defaults-making it optimal for next-generation EV power electronics requiring timing precision and safety compliance.

Availability

SI86S662BB-IU is available at Aetrix Electronics and suitable for battery management systems, traction inverters, onboard chargers, and industrial PLC modules requiring stable component supply across automotive and industrial lifecycles.

Supply support for SI86S662BB-IU 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 is engineered for high-reliability galvanic isolation in safety-critical automotive and industrial systems, emphasizing reinforced insulation, AEC-Q100 qualification, and sub-10 ns timing performance.

FAQ

What is the isolation voltage rating of the SI86S662BB-IU?

The SI86S662BB-IU provides 6000 VRMS reinforced isolation per UL 1577 and IEC 60747-17, validated for one-minute withstand testing. This rating applies specifically to the WB SOIC-16 package variant and supports safety-critical applications including automotive traction inverters and medical power supplies where reinforced insulation is mandated.

Does the SI86S662BB-IU require external startup configuration?

No, the SI86S662BB-IU uses RF-based on/off keying modulation and requires no startup initialization or configuration registers. It begins transmitting valid data immediately upon VDD stabilization above 2.25 V, with outputs transitioning to their fail-safe default state within 0.3 ms after power-up-eliminating boot-time uncertainty in safety-critical systems.

How does the fail-safe mode function on the SI86S662BB-IU?

The SI86S662BB-IU offers factory-selectable fail-safe behavior: when VDD1 is unpowered but VDD2 remains active, outputs default to either logic high or logic low based on the ordering option suffix. This prevents undefined states in gate drivers or BMS controllers during partial power loss, ensuring predictable system shutdown behavior per ISO 26262 ASIL-B requirements.

What is the CMTI performance of the SI86S662BB-IU?

The SI86S662BB-IU achieves ≥100 kV/µs common-mode transient immunity, measured per JEDEC standards. This high CMTI rating ensures reliable operation in SiC/GaN-based inverters where rapid dv/dt transients exceed 50 kV/µs, preventing false triggering or data corruption across the isolation barrier during switching events.

Which package type is used for the SI86S662BB-IU?

The SI86S662BB-IU is supplied in a wide-body SOIC-16 (WB SOIC-16) package with 7.5 mm creepage and clearance, optimized for 6000 VRMS working voltage. This package meets IPC-7351B standards and is compatible with standard SMT assembly processes, including reflow profiles up to 260 °C peak temperature.