Skyworks Solutions Inc. SI86S642HE-IS2R

Overview

SI86S642HE-IS2R from Skyworks Solutions is a 4-channel reinforced digital isolator with bidirectional signal isolation across an integrated semiconductor barrier, supporting up to 150 Mbps data rate, 10 ns typical propagation delay, and 6000 VRMS isolation rating. It operates from 2.25–5.5 V on both sides and features Schmitt-trigger inputs, tri-state outputs with enable, and fail-safe default-high output configuration - used in isolated motor control gate drivers and battery management system communication interfaces.

For engineers reviewing the SI86S642HE-IS2R datasheet, SI86S642HE-IS2R pinout, SI86S642HE-IS2R application, or SI86S642HE-IS2R equivalent, key selection criteria include its AEC-Q100 qualification, IEC 60747-17 reinforced insulation rating, 36 ns input deglitch filter (confirmed for Si86S64x family), and WB SOIC-16 package with 8.3 mm creepage/clearance.

Technical Context

The SI86S642HE-IS2R implements RF-based on/off keying modulation across a monolithic silicon dioxide isolation barrier, eliminating startup initialization and enabling deterministic timing behavior. Its architecture supports independent undervoltage lockout (UVLO) and reset monitoring on both sides (VDD1/VDD2), with RSTB thresholds at ~1.7 V and UVLO hysteresis of 105–160 mV.

It integrates four isolated channels with side-A and side-B enable pins (EN1/EN2), configurable fail-safe output state (default-high per "H" suffix), and 36 ns input noise filtering - confirmed specifically for Si86S64x variants per datasheet Section 3.4.5. The device uses CMOS thresholds with 0.15×VDD input hysteresis and delivers 50 Ω nominal output impedance.

Key Specifications

Pinout & Package

SI86S642HE-IS2R is housed in a wide-body SOIC-16 (WB SOIC-16) package with 10.3 mm body width, 8.3 mm creepage/clearance, and reinforced insulation barrier. Pin numbering follows standard SOIC-16 layout with Side A (pins 1–8) and Side B (pins 9–16) 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 ADUM4402BRWZ and ISO6741FDWR, SI86S642HE-IS2R delivers higher data rate (150 Mbps vs. ≤100 Mbps), certified reinforced insulation (6000 VRMS + IEC 60747-17), built-in 36 ns deglitch filtering, and AEC-Q100 Grade 1 qualification - making it uniquely suited for next-generation EV power electronics and safety-critical industrial systems.

Availability

SI86S642HE-IS2R is available at Aetrix Electronics and suitable for motor control gate driver interfaces, isolated battery management systems, industrial ADC/DAC interfaces, and onboard charger communication links requiring stable component supply across automotive and industrial production cycles.

Supply support for SI86S642HE-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, with leadership in RF, timing, and isolation technologies for high-reliability applications.

The Si86S6xx family was engineered to replace optocouplers in demanding automotive and industrial systems, delivering superior speed, timing precision, and safety certification while reducing board space and external BOM count.

FAQ

What is the isolation voltage rating of SI86S642HE-IS2R and which safety standards does it meet?

SI86S642HE-IS2R provides 6000 VRMS isolation for 1 minute per UL 1577 and reinforced insulation per IEC 60747-17. It also meets CSA 62368-1 and 60601-1, VDE 60747-17, and CQC GB4943.1 requirements - verified for use in medical, industrial, and automotive high-voltage systems where reinforced barrier integrity is mandatory.

Does SI86S642HE-IS2R support fail-safe operation, and how is it configured?

Yes, SI86S642HE-IS2R implements selectable fail-safe mode via ordering option: the "H" suffix denotes default-high output state when VDD1 is unpowered but VDD2 remains active. This behavior is hardwired and requires no external configuration - ensuring predictable logic-high signaling during primary-side power loss in safety-critical BMS or motor control applications.

What is the purpose of the 36 ns input deglitch filter in SI86S642HE-IS2R?

The 36 ns input deglitch filter in SI86S642HE-IS2R blocks noise pulses shorter than 36 ns from propagating across the isolation barrier. Confirmed for the Si86S64x family, this hardware filter eliminates false triggering caused by EFT bursts or switching transients - critical in noisy environments like traction inverters and isolated SMPS feedback paths.

How does SI86S642HE-IS2R handle power supply sequencing during startup and brownout conditions?

SI86S642HE-IS2R incorporates independent UVLO and reset monitors on both sides: VDD1 and VDD2 each have dedicated UVLO+ (2.10–2.25 V) and RSTB– (~1.7 V) thresholds. Startup completes in 0.3 ms; during brownout, outputs enter defined fail-safe state before full reset - ensuring deterministic behavior in automotive and industrial power systems with asymmetric supply ramps.

What package type and creepage distance does SI86S642HE-IS2R use?

SI86S642HE-IS2R uses a wide-body SOIC-16 (WB SOIC-16) package with 10.3 mm body width and 8.3 mm creepage/clearance across the isolation barrier. This mechanical layout satisfies reinforced insulation requirements for 6000 VRMS working voltage and enables compliance with IEC 61010-1, 62368-1, and 60601-1 end-equipment standards.