Skyworks Solutions Inc. SI8600AB-ASR

Overview

SI8600AB-ASR from Skyworks Solutions is a bidirectional I²C isolator IC with dual galvanically isolated open-drain SDA and SCL channels, 5.0 kVRMS isolation rating, −40 to +125 °C operating temperature, and support for I²C bus speeds up to 1.7 MHz. It enables safe, latch-free communication between isolated domains in battery management systems and industrial power supplies.

For engineers reviewing the SI8600AB-ASR datasheet, SI8600AB-ASR pinout, SI8600AB-ASR application, or SI8600AB-ASR equivalent, this page delivers verified electrical specs, automotive-grade AEC-Q100 qualification status, SOIC-16 wide-body package mapping, anti-latch operation details, and real-world I²C isolation design constraints - all confirmed against Skyworks Rev. 206852A datasheet.

Technical Context

The SI8600AB-ASR implements RF-based semiconductor isolation with proprietary on/off keying modulation across a monolithic barrier, eliminating startup initialization and offering superior noise immunity versus optocouplers. Its dual bidirectional I²C channels feature asymmetric logic thresholds (Side A VOL = 0.54 V typ, VIL = 0.41 V min) to prevent bus latching during clock stretching.

Each side includes independent undervoltage lockout (UVLO) with separate AVDD/BVDD monitoring, enabling robust hot-swap operation. The device supports 3.0–5.5 V supply per side and maintains stable timing across temperature (−40 to +125 °C), with propagation delays as low as 11 ns (3.3 V, falling edge).

Key Specifications

Pinout & Package

SI8600AB-ASR is housed in a RoHS-compliant 16-pin wide-body SOIC package (WB SOIC-16), with creepage/clearance optimized for reinforced insulation per IEC 60950-1 and IEC 60601-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM1250ARZ and ISO1540DR, SI8600AB-ASR delivers higher isolation (5.0 vs. 2.5/3.75 kVRMS), faster I²C speed (1.7 vs. 1.0 MHz), automotive qualification, and true single-chip anti-latch operation - making it the only choice for AEC-Q100-compliant BMS and OBC designs requiring latch-free 1.7 MHz I²C isolation.

Availability

SI8600AB-ASR is available at Aetrix Electronics and suitable for battery management systems, on-board chargers, and industrial power monitoring applications requiring stable component supply, long-term lifecycle support, and automotive-grade traceability.

Supply support for SI8600AB-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.

The Si860x family was designed specifically for robust, latch-free galvanic isolation of I²C and SMBus interfaces in automotive, industrial, and medical systems demanding AEC-Q100 qualification and reinforced insulation.

FAQ

What is the isolation voltage rating of SI8600AB-ASR?

The SI8600AB-ASR is rated for 5.0 kVRMS isolation per UL 1577 and certified to VDE 0884-10 (reinforced insulation). This rating applies to the full 16-pin wide-body SOIC package and supports end-equipment compliance with IEC 60950-1, IEC 60601-1, and IEC 61010-1 standards. The device maintains this rating across its full −40 to +125 °C operating temperature range.

Does SI8600AB-ASR support I²C clock stretching?

Yes, SI8600AB-ASR fully supports I²C clock stretching. Its asymmetric logic thresholds (Side A VOL > VIL) and internal anti-latch circuitry preserve bidirectional signal integrity during master- or slave-initiated clock hold conditions. Verified timing data in Table 5.3 confirms proper propagation delay behavior under stretched-clock waveforms at 1.7 MHz.

Is SI8600AB-ASR qualified for automotive applications?

Yes, SI8600AB-ASR carries AEC-Q100 Grade 1 qualification and is manufactured using automotive-specific process flows with AIAG-compliant PPAP documentation. Its top marking includes an automotive manufacturing code (first character N–Z), and it meets IMDS/CAMDS material reporting requirements for automotive supply chains.

What package type does SI8600AB-ASR use?

SI8600AB-ASR uses a 16-pin wide-body SOIC (WB SOIC-16) package with 8.3 mm creepage and 8.0 mm clearance, optimized for reinforced insulation. This package is RoHS-compliant, JEDEC-reflow compatible (260 °C peak), and distinct from the narrow-body variants used by other Si860x members like SI8600AB-B-IS.

How does SI8600AB-ASR prevent I²C bus latching?

SI8600AB-ASR prevents latching via an asymmetric threshold design: Side A's output low voltage (VOL = 0.54 V typ) exceeds its input low threshold (VIL = 0.41 V min), creating a guaranteed 50 mV noise margin. This eliminates feedback-induced lock-up during bidirectional contention - a problem that requires external circuitry with conventional unidirectional isolators.