Skyworks Solutions Inc. SI86S600AC-ASR

Overview

SI86S600AC-ASR from Skyworks Solutions is an automotive-grade bidirectional I²C isolator with dual-channel galvanic isolation, 3.75 kV_RMS reinforced insulation, open-drain SDA/SCL outputs (35 mA sink), and support for I²C bus speeds up to 1.7 MHz. It operates across –40°C to +125°C and integrates anti-latch circuitry for reliable hot-swap I²C/SMBus communication in battery management systems and on-board chargers.

For engineers reviewing the SI86S600AC-ASR datasheet, SI86S600AC-ASR pinout, SI86S600AC-ASR application, or SI86S600AC-ASR equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in automotive power electronics, and two validated alternative parts - all grounded in Skyworks' official Si860x family documentation and AEC-Q100 qualification data.

Technical Context

The SI86S600AC-ASR implements RF-based semiconductor isolation with independent bidirectional SDA and SCL channels, each featuring asymmetric logic thresholds (V_IL = 0.41 V, V_OL = 0.54–0.8 V) to prevent bus latching. Its anti-latch architecture ensures stable operation during clock stretching and hot-insertion events without external components.

It supports dual independent supply domains (AVDD/BVDD = 3.0–5.5 V), includes undervoltage lockout (UVLO) per side, and maintains 50 mV minimum input/output low-level margin (ΔV_SDA/ΔV_SCL) across temperature. Propagation delay is ≤45 ns (5 V) and ≤55 ns (3.3 V) for A→B rising edges.

Key Specifications

Pinout & Package

SI86S600AC-ASR uses an SOIC-8 narrow-body package (5.3 mm × 4.4 mm, 1.27 mm pitch) with creepage/clearance ≥5.5 mm. Pin functions are validated per Skyworks Si8600/02 SOIC-8 pinout specification.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bidirectional I²C isolation applications.

Compared with SI86S600AC-ASR, SI8600AC-AS offers identical performance at lower cost but lacks automotive traceability and qualification, while ADUM1250ARZ provides functional equivalence only in non-automotive contexts due to its reduced isolation rating, slower speed, and absence of AEC-Q100 validation.

Availability

SI86S600AC-ASR is available at Aetrix Electronics and suitable for automotive battery management systems, on-board chargers, and EV traction inverter monitoring requiring stable component supply, long lifecycle assurance, and AEC-Q100-compliant sourcing.

Supply support for SI86S600AC-ASR 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 SI86S600AC-ASR belongs to the Si860x family of RF-based digital isolators, designed specifically for robust, low-latency galvanic isolation of I²C and SMBus interfaces in automotive and industrial power electronics.

FAQ

What is the isolation voltage rating of the SI86S600AC-ASR?

The SI86S600AC-ASR has a reinforced isolation rating of 3.75 kV_RMS for 1 minute, certified to UL 1577, CSA Component Acceptance Notice 5A, VDE 0884-10, and IEC 60950-1. This rating is validated across the full operating temperature range (–40°C to +125°C) and supports automotive safety requirements in high-voltage battery systems. SI86S600AC-ASR achieves this via Skyworks' proprietary RF isolation barrier in an SOIC-8 narrow-body package.

Does the SI86S600AC-ASR support I²C clock stretching?

Yes, the SI86S600AC-ASR fully supports I²C clock stretching on both SDA and SCL lines due to its bidirectional, anti-latch architecture. The device's asymmetric logic thresholds (e.g., Side A V_OL > V_IL by ≥50 mV) prevent false latching during extended low periods on either bus line. SI86S600AC-ASR maintains correct signal directionality and timing integrity even when slaves hold SCL low for hundreds of microseconds - a requirement in battery cell monitoring and thermal management subsystems.

What is the maximum I²C bus frequency supported by the SI86S600AC-ASR?

The SI86S600AC-ASR supports I²C bus frequencies up to 1.7 MHz, compliant with Fast Mode Plus (Fm+) specifications. This is confirmed in Table 5.3 of the Si860x datasheet under "Maximum I²C Bus Frequency" and validated across 3.3 V and 5 V supply conditions. SI86S600AC-ASR achieves this using low-propagation-delay RF isolation (≤55 ns at 3.3 V), making it suitable for high-throughput telemetry in automotive BMS and real-time power converter control loops.

Is the SI86S600AC-ASR AEC-Q100 qualified?

Yes, the SI86S600AC-ASR is AEC-Q100 qualified per Grade 1 (–40°C to +125°C ambient), with full automotive process flows, AIAG-compliant PPAP documentation, IMDS/CAMDS listings, and zero-defect methodology applied throughout design and manufacturing. The "–A" suffix in SI86S600AC-ASR explicitly denotes automotive grade, distinguishing it from industrial variants like SI8600AC-AS. SI86S600AC-ASR is approved for use in on-board chargers, battery management systems, and traction inverters.

What package type does the SI86S600AC-ASR use?

The SI86S600AC-ASR uses an SOIC-8 narrow-body package (5.3 mm × 4.4 mm, 1.27 mm lead pitch) with creepage and clearance ≥5.5 mm, RoHS-compliant, and rated for 260 °C peak reflow per JEDEC J-STD-020. This package is specified in Table 1.1 of the Si860x datasheet for AC-grade 3.75 kV_RMS variants and matches the pinout of SI8600AB/AC/AD-B-IS and -AS series. SI86S600AC-ASR's narrow-body form factor enables compact placement in space-constrained automotive ECUs and power modules.