Skyworks Solutions Inc. SI86S642EE-AS2R

Overview

SI86S642EE-AS2R 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 supplies on both sides and features selectable fail-safe output (default low), Schmitt-trigger inputs, and tri-state outputs with enable control - deployed in battery management systems and isolated ADC interfaces.

For engineers reviewing the SI86S642EE-AS2R datasheet, SI86S642EE-AS2R pinout, SI86S642EE-AS2R application, or SI86S642EE-AS2R equivalent, key selection criteria include reinforced IEC 60747-17 certification, AEC-Q100 qualification for automotive use, 36 ns input deglitch filtering, and WB SOIC-16 package compatibility with 8.3 mm creepage/clearance.

Technical Context

The SI86S642EE-AS2R implements RF-based on/off keying modulation across its isolation barrier, eliminating startup initialization and enabling robust noise immunity with 100 kV/µs CMTI. 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 bidirectional channels with dedicated EN1/EN2 enable pins per side, tri-state output control, and failsafe default-low output configuration confirmed by ordering code "EE". Input deglitch filtering (36 ns) is factory-enabled for all channels, rejecting sub-duration noise pulses without affecting valid signal timing.

Key Specifications

Pinout & Package

SI86S642EE-AS2R is housed in a wide-body SOIC-16 (WB SOIC-16) package with 8.3 mm creepage and clearance, supporting 6000 VRMS isolation. Pin numbering follows standard SOIC-16 layout with isolation barrier between pins 1–8 (Side A) and 9–16 (Side B).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM2402BRWZ and ISO7742FDWR, SI86S642EE-AS2R delivers 150 Mbps speed, 6000 VRMS reinforced isolation, AEC-Q100 Grade 1 qualification, and factory-configured 36 ns deglitching - making it uniquely suited for automotive traction and charging systems requiring functional safety and high-noise resilience.

Availability

SI86S642EE-AS2R is available at Aetrix Electronics and suitable for battery management systems, traction inverters, onboard chargers, and isolated ADC interfaces requiring stable component supply across automotive and industrial production cycles.

Supply support for SI86S642EE-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.

The Si86S6xx family is engineered for high-reliability galvanic isolation in automotive and industrial power systems, emphasizing reinforced safety certification, high-speed performance, and noise-immune operation in harsh electromagnetic environments.

FAQ

What is the isolation voltage rating of the SI86S642EE-AS2R and which safety standards does it meet?

The SI86S642EE-AS2R is rated for 6000 VRMS isolation per UL 1577 for 1 minute and certified to IEC 60747-17 for reinforced insulation. It also meets CSA 62368-1 and 60601-1, and CQC GB4943.1 - enabling use in medical, industrial, and automotive systems requiring reinforced barrier integrity. SI86S642EE-AS2R achieves this in a WB SOIC-16 package with 8.3 mm creepage.

Does the SI86S642EE-AS2R support fail-safe operation, and how is it configured?

Yes, SI86S642EE-AS2R implements selectable fail-safe mode via ordering option: the "EE" suffix denotes default-low output state when VDD1 is unpowered but VDD2 remains active. This behavior is hard-coded in silicon and verified in Table 4 of the datasheet, ensuring predictable shutdown in BMS or inverter fault conditions without external circuitry.

What is the purpose of the 36 ns input deglitch filter in the SI86S642EE-AS2R?

The 36 ns input deglitch filter in SI86S642EE-AS2R rejects noise pulses shorter than 36 ns on all four channels, preventing false triggering in high-EMI environments like motor drives and DC-DC converters. This hardware filter is factory-enabled and does not add propagation delay to valid signals - only attenuates sub-duration transients, as confirmed in Section 3.4.5 of the datasheet.

Is the SI86S642EE-AS2R qualified for automotive applications, and what does AEC-Q100 Grade 1 mean?

Yes, SI86S642EE-AS2R is AEC-Q100 Grade 1 qualified, meaning it is tested and certified for operation from –40 °C to +125 °C ambient, with full stress validation including temperature cycling, HTOL, and ESD per Rev H. This qualification supports deployment in engine bay, battery, and powertrain systems where reliability under thermal and electrical stress is mandatory.

How does the SI86S642EE-AS2R handle power supply sequencing and undervoltage conditions?

SI86S642EE-AS2R features independent UVLO and reset monitors on VDD1 and VDD2, with UVLO+ at 2.10–2.25 V and RSTB– at ~1.7 V. During brownout, outputs enter a known state (default low per "EE") within 0.3 ms, and weak 100 kΩ pulldowns hold outputs low until stable supply is restored - ensuring deterministic behavior during power transients without external supervision.