Skyworks Solutions Inc. SI86S663BC-AS1R

Overview

SI86S663BC-AS1R from Skyworks Solutions is a 6-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 tri-state outputs with enable, selectable fail-safe default-high output, and AEC-Q100 qualification for automotive traction inverters and battery management systems.

For engineers reviewing the SI86S663BC-AS1R datasheet, SI86S663BC-AS1R pinout, SI86S663BC-AS1R application, or SI86S663BC-AS1R equivalent, key selection criteria include its 6-channel configuration, WB SOIC-16 package with 8.3 mm creepage, reinforced IEC 60747-17 certification, and support for industrial motor control and automotive onboard chargers requiring high CMTI and low pulse width distortion.

Technical Context

The SI86S663BC-AS1R implements RF-based on/off keying modulation across a monolithic silicon isolation barrier, eliminating startup initialization and enabling deterministic timing without clock recovery circuits. Its architecture delivers 3.5 ns typical pulse width distortion and 100 kV/µs transient immunity, with independent UVLO and reset monitors per side (VDD1/VDD2) and fail-safe logic controlled by ordering option.

It supports dual-supply operation with side-specific enable pins (EN1/EN2), Schmitt-trigger + CMOS input thresholds for noise immunity, and tri-state output control. The device does not include sleep mode (SMb) or direction control (DIR), distinguishing it from Si86SMxx or Si86SQxx variants in the same family.

Key Specifications

Pinout & Package

SI86S663BC-AS1R is housed in a wide-body SOIC-16 (WB SOIC-16) package with 8.3 mm creepage and 10.3 mm clearance, supporting 6000 VRMS reinforced isolation. Pin 1 is marked with a dot; pin 16 is VDD2, pin 8 is GND1, and pin 9 is GND2. The isolation barrier separates Side A (pins 1–8) and Side B (pins 9–16).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM6603ARIZ-RL and ISO6763RQWR, SI86S663BC-AS1R delivers higher data rate (150 vs. 50 Mbps), higher isolation (6000 vs. ≤5000 VRMS), and automotive qualification-making it uniquely suited for high-performance EV and industrial servo applications demanding both speed and safety.

Availability

SI86S663BC-AS1R is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, and isolated switch mode supplies requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for SI86S663BC-AS1R 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 provider of analog and mixed-signal semiconductors, specializing in RF, timing, and isolation technologies for high-reliability applications.

The Si86S6xx family was designed specifically for high-speed, reinforced-isolation requirements in automotive electrification and industrial automation, emphasizing CMTI, timing precision, and safety certification.

FAQ

What is the isolation rating and safety certification status of SI86S663BC-AS1R?

SI86S663BC-AS1R provides 6000 VRMS reinforced isolation per UL 1577 and is certified to IEC 60747-17, CSA 62368-1, VDE 60747-17, and CQC GB4943.1. These certifications are fully documented and validated for end-equipment compliance in industrial and automotive applications. SI86S663BC-AS1R meets the reinforced insulation requirements needed for functional safety in systems such as traction inverters and medical diagnostics.

Does SI86S663BC-AS1R support sleep mode or direction control functionality?

No, SI86S663BC-AS1R does not include sleep mode (SMb) or direction control (DIR/ISO_DIR) functionality. It belongs to the base Si86S66x series with fixed unidirectional/bidirectional channel mapping and no dedicated control pins for power-down or signal flow reversal. Those features are present only in Si86SMxx and Si86SQxx variants. SI86S663BC-AS1R relies on EN1/EN2 for output enable/disable only.

What are the supply voltage requirements and bypass capacitor recommendations for SI86S663BC-AS1R?

SI86S663BC-AS1R requires 2.25–5.5 V on both VDD1 and VDD2, with independent ground references (GND1, GND2). Each supply must be decoupled with a 0.1 µF ceramic capacitor and a 10 µF bulk capacitor placed as close as possible to the respective VDD/GND pins. This dual-capacitor network ensures stable operation across the full temperature and frequency range specified for SI86S663BC-AS1R.

How does the fail-safe output mode work on SI86S663BC-AS1R?

SI86S663BC-AS1R implements a factory-configured fail-safe mode where outputs default to logic high when VDD1 is unpowered but VDD2 remains active. This behavior is defined by the "BC" ordering suffix and is implemented via internal circuitry that overrides output states during undervoltage conditions. It ensures safe deactivation of downstream drivers in battery management or motor control systems during input-side power loss.

What is the maximum data rate and propagation delay specification for SI86S663BC-AS1R?

SI86S663BC-AS1R supports DC to 150 Mbps data rate with 10 ns typical propagation delay and 3.5 ns typical pulse width distortion. These values are measured under standard conditions (VDD = 5.0 V, TA = 25 °C) and remain valid across the full operating temperature range (–40 to 125 °C), making SI86S663BC-AS1R suitable for high-fidelity digital signal isolation in time-critical applications.