Skyworks Solutions Inc. SI8460BB-A-IS1R

Overview

SI8460BB-A-IS1R 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 10 ns and 2.5 kV_RMS isolation. It operates across 2.70–5.5 V supply rails and delivers <6 mA per channel at 100 Mbps (5 V), enabling high-speed signal isolation in motor control and isolated power supplies.

For engineers reviewing the SI8460BB-A-IS1R datasheet, SI8460BB-A-IS1R pinout, SI8460BB-A-IS1R application, or SI8460BB-A-IS1R equivalent, key selection criteria include its 150 Mbps capability, 0.5 ns typical channel-to-channel skew, 25 kV/µs CMTI, and RoHS-compliant narrow SOIC-16 footprint - all critical for industrial automation and hybrid electric vehicle subsystems requiring robust galvanic separation.

Technical Context

The SI8460BB-A-IS1R implements capacitive isolation using on-chip RF modulation/demodulation circuitry, eliminating magnetic coupling and startup initialization. Its six unidirectional channels are split across two independent supply domains (VDD1/VDD2), each supporting 2.70–5.5 V operation with ±10 µA input leakage and 85 Ω nominal output impedance.

Timing performance is characterized by 3.0–9.5 ns propagation delay (typical 6.0 ns), 1.5 ns pulse width distortion, and 0.5 ns channel-channel skew at 150 Mbps - verified across –40 to +125 °C ambient temperature with stable parameters over lifetime.

Key Specifications

Pinout & Package

The SI8460BB-A-IS1R is housed in a 16-pin narrow-body SOIC package (7.5 mm × 10.3 mm, 1.27 mm pitch) with creepage/clearance ≥3.9 mm and 2.5 kV_RMS certified isolation barrier between sides.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM140D0BRIZ and ISO6760QDWR, the SI8460BB-A-IS1R uniquely balances six-channel density, 150 Mbps speed, and industrial-grade 2.5 kV_RMS isolation in a single SOIC-16 package - optimizing PCB space and signal integrity for motor control and isolated power designs.

Availability

SI8460BB-A-IS1R is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle battery management, and isolated switch-mode power supplies requiring stable component supply and long-lifecycle support.

Supply support for SI8460BB-A-IS1R 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 SI8460BB-A-IS1R belongs to Skyworks' Si84xx family of capacitive digital isolators, engineered for high-reliability industrial and automotive systems demanding low power, precise timing, and certified safety isolation.

FAQ

What is the maximum data rate supported by the SI8460BB-A-IS1R?

The SI8460BB-A-IS1R supports a maximum data rate of 150 Mbps, verified across its full operating temperature range (–40 to +125 °C) and supply voltage range (2.70–5.5 V). This performance applies specifically to the 'Bx' variant designation in the Si8460/61/62/63 family, and the SI8460BB-A-IS1R part number confirms this high-speed grade. The device maintains sub-10 ns worst-case propagation delay even at 150 Mbps.

Does the SI8460BB-A-IS1R require external startup configuration or initialization?

No, the SI8460BB-A-IS1R does not require external startup configuration or initialization. It begins transmitting valid output data within 40 µs of power application (start-up time t_SU), with no firmware, register writes, or external clock dependencies. This zero-initialization behavior is inherent to its capacitive isolation architecture and is explicitly confirmed in the Skyworks datasheet Rev. 1.6 for the SI8460BB-A-IS1R variant.

What safety certifications apply to the SI8460BB-A-IS1R?

The SI8460BB-A-IS1R is certified to UL 1577 (2500 V_RMS for 1 minute), CSA Component Notice 5A (IEC 60950-1 and 61010-1), and VDE 0884-2 (IEC 60747-5-2). These certifications cover reinforced insulation with 2.5 kV_RMS withstand voltage and are validated for the narrow-body SOIC-16 package. Regulatory documentation references UL File E257455, CSA File 232873, and VDE File 5006301-4880-0001.

Can the SI8460BB-A-IS1R operate with different supply voltages on each side?

Yes, the SI8460BB-A-IS1R supports independent supply voltages on its primary (VDD1) and secondary (VDD2) sides, each ranging from 2.70 V to 5.5 V. This allows interfacing between 3.3 V microcontrollers and 5 V peripherals, or adapting to asymmetric power domains in isolated systems. The datasheet specifies that VDD1 and VDD2 may differ without affecting isolation integrity or timing performance.

What is the channel configuration of the SI8460BB-A-IS1R?

The SI8460BB-A-IS1R provides six unidirectional digital isolation channels: inputs A1–A6 on the primary side (VDD1/GND1 domain) and corresponding outputs B1–B6 on the secondary side (VDD2/GND2 domain). All six channels are functionally identical and independently operable; there are no bidirectional or configurable channels. This fixed 6-channel unidirectional topology is defined in the Si8460 family datasheet and confirmed for the SI8460BB-A-IS1R ordering code.