Skyworks Solutions Inc. SI8462AB-A-IS1

Overview

SI8462AB-A-IS1 from Skyworks Solutions is a six-channel, ultra-low-power digital isolator in a 16-pin narrow-body SOIC package, supporting up to 150 Mbps data rate with worst-case propagation delay under 9.5 ns, <1.5 ns pulse width distortion, and 0.5 ns channel-to-channel skew. It operates across 2.70–5.5 V supply rails and delivers <13.3 mA per side at 100 Mbps (5 V), enabling high-speed isolated communication in motor control and industrial power inverters.

For engineers reviewing the SI8462AB-A-IS1 datasheet, SI8462AB-A-IS1 pinout, SI8462AB-A-IS1 application, or SI8462AB-A-IS1 equivalent, key selection criteria include its 2500 VRMS reinforced insulation rating, 25 kV/µs common-mode transient immunity, 60-year lifetime at rated voltage, and compatibility with 3.3 V and 5 V logic systems without level-shifting.

Technical Context

The SI8462AB-A-IS1 implements capacitive isolation with on-chip RF modulation/demodulation circuitry, enabling DC-to-150 Mbps signal transmission across galvanically isolated barriers. Its dual-die architecture separates input and output domains, each with independent 2.70–5.5 V supply pins (VDD1/VDD2), supporting asymmetric rail operation and eliminating start-up initialization delays.

Timing performance is stabilized across –40 °C to +125 °C ambient temperature at full 150 Mbps data rate. The device achieves <6 ns minimum pulse width and <3 ns propagation delay skew between channels, making it suitable for synchronous multi-channel isolation in gate driver feedback loops and isolated ADC interfaces.

Key Specifications

Pinout & Package

SI8462AB-A-IS1 is housed in a RoHS-compliant 16-pin narrow-body SOIC package (7.5 mm × 10.3 mm, 1.27 mm pitch) with creepage and clearance ≥3.9 mm per IEC 60664-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM4620BRIZ-RL and ISO6760FDWR, SI8462AB-A-IS1 uniquely balances 150 Mbps bandwidth, sub-10 ns timing, and 2500 VRMS certification in a standard SOIC-16 footprint-making it optimal for real-time industrial motion control where speed, precision, and safety are co-constrained.

Availability

SI8462AB-A-IS1 is available at Aetrix Electronics and suitable for industrial motor drives, EV onboard chargers, and isolated switch-mode power supplies requiring stable component supply and long-lifecycle assurance.

Supply support for SI8462AB-A-IS1 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 Si84xx family was engineered specifically for high-reliability industrial and automotive isolation, emphasizing low power, precise timing, and regulatory-certified 2500 VRMS operation in compact packages.

FAQ

What is the maximum operating temperature for SI8462AB-A-IS1 at full 150 Mbps data rate?

The SI8462AB-A-IS1 is fully specified for continuous operation at –40 °C to +125 °C ambient temperature while sustaining 150 Mbps across all six channels. This rating is validated per Table 1 in the datasheet under 15 pF load and 5 V supply conditions, with derating only required for simultaneous high channel count, high frequency, and elevated supply voltage combinations.

Does SI8462AB-A-IS1 require external level-shifting when interfacing between 3.3 V and 5 V systems?

No, SI8462AB-A-IS1 does not require external level-shifting. Its VDD1 and VDD2 pins operate independently over 2.70–5.5 V, allowing direct connection to a 3.3 V microcontroller on one side and a 5 V FPGA or gate driver on the other. Input thresholds (VIH ≥2.0 V, VIL ≤0.8 V) and output drive strength (VOH ≥VDD–0.4 V) ensure interoperability across both logic families without translation circuitry.

How is the 2500 VRMS isolation rating of SI8462AB-A-IS1 verified and certified?

The 2500 VRMS isolation rating of SI8462AB-A-IS1 is certified under UL 1577 (File E257455), CSA Component Notice 5A (File 232873), and VDE 0884-2 / IEC 60747-5-2 (File 5006301-4880-0001). Each unit undergoes 1-second 3000 VRMS production testing, and the narrow-body SOIC package meets minimum 3.9 mm creepage/clearance per IEC 60664-1, with VDE validating ≥4.7 mm.

Can SI8462AB-A-IS1 replace older optocouplers in existing designs without PCB changes?

Yes, SI8462AB-A-IS1 is a drop-in replacement for 6-channel optocouplers in SOIC-16 footprints, including industry-standard pinouts such as the HCPL-0738 and TLP2366. Its pin-compatible layout, identical 1.27 mm pitch, and single-bypass-capacitor requirement (per VDD pin) enable direct substitution without trace modifications or layout rework.

What is the start-up time specification for SI8462AB-A-IS1, and how does it impact system initialization?

The SI8462AB-A-IS1 has a guaranteed start-up time of ≤40 µs from power application to valid output data, with typical performance at 15 µs. This eliminates the need for external reset sequencing or watchdog timers during power-on, enabling deterministic behavior in safety-critical applications like motor stall detection and inverter pre-charge control where sub-100 µs response is required.