Skyworks Solutions Inc. SI8460BA-A-IS1R

Overview

SI8460BA-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 <9.5 ns, 0.5 ns channel-channel skew, and 25 kV/µs common-mode transient immunity. It operates across 2.70–5.5 V supply rails and delivers <6 mA per channel at 100 Mbps (5 V), enabling high-speed isolated communication in motor control and industrial power inverters.

For engineers reviewing the SI8460BA-A-IS1R datasheet, SI8460BA-A-IS1R pinout, SI8460BA-A-IS1R application, or SI8460BA-A-IS1R equivalent, key selection criteria include its 2.5 kVRMS reinforced isolation rating (UL/CSA/VDE certified), 6-channel unidirectional configuration, –40 to 125 °C operation at full speed, and compatibility with 15 pF capacitive loads without external termination.

Technical Context

The SI8460BA-A-IS1R implements capacitive isolation using on-chip RF modulation/demodulation circuitry, eliminating magnetic coupling and startup initialization. Its architecture supports independent primary-side (VDD1) and secondary-side (VDD2) supplies, each configurable from 2.70 V to 5.5 V, enabling level-shifting between disparate logic domains.

All six channels are unidirectional and fixed-direction (input on side 1, output on side 2), with precise timing performance: typical pulse width distortion of 1.5 ns, 2 ns propagation delay skew, and 6 ns minimum pulse width. The device achieves 60-year lifetime at rated working voltage and meets IEC 60747-5-2 (VDE 0884-2), UL 1577, and CSA Component Notice 5A safety standards.

Key Specifications

Pinout & Package

SI8460BA-A-IS1R is housed in a RoHS-compliant 16-pin narrow-body SOIC package (7.5 mm × 10.3 mm, 1.27 mm pitch) with creepage/clearance ≥3.9 mm and internal isolation barrier rated to 3600 VRMS for 1 second.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM140D0BRIZ and ISO6760FDWR, the SI8460BA-A-IS1R uniquely balances six-channel count, 150 Mbps speed, and 2.5 kVRMS certification in a single SOIC-16 package-enabling compact, high-performance isolation without channel splitting or speed compromise.

Availability

SI8460BA-A-IS1R is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle battery management, and isolated switch-mode power supply designs requiring stable component supply, long-term lifecycle support, and certified reinforced isolation.

Supply support for SI8460BA-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 for wireless, automotive, and industrial markets.

The Si846x family was designed specifically for high-reliability, high-speed digital isolation in harsh environments-targeting motor drives, power supplies, and EV systems where timing precision, low power, and safety certification are non-negotiable.

FAQ

What is the maximum operating temperature for SI8460BA-A-IS1R at full 150 Mbps data rate?

The SI8460BA-A-IS1R is fully specified for operation from –40 to 125 °C at 150 Mbps with 15 pF load and 5 V supply. This rating is validated across all six channels simultaneously and includes worst-case propagation delay, skew, and power consumption metrics per Skyworks Rev. 1.6 datasheet Table 3 and Table 6.

Does SI8460BA-A-IS1R support bidirectional communication on any channel?

No. The SI8460BA-A-IS1R implements six fixed unidirectional channels: IN1–IN6 accept inputs referenced to VDD1/GND1, and OUT1–OUT6 deliver corresponding outputs referenced to VDD2/GND2. Bidirectional operation requires separate dedicated isolators or a different part number such as SI8462 (3 forward + 3 reverse channels).

What safety certifications apply to SI8460BA-A-IS1R?

The SI8460BA-A-IS1R carries UL 1577 recognition (2500 VRMS, File E257455), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 certification (File 5006301-4880-0001). All certifications cover the 2.5 kVRMS isolation rating and apply to the NB SOIC-16 package variant.

Can SI8460BA-A-IS1R operate with mismatched supply voltages on VDD1 and VDD2?

Yes. The SI8460BA-A-IS1R supports independent VDD1 and VDD2 rails, each adjustable from 2.70 V to 5.5 V. This enables level translation-for example, 3.3 V MCU interface on side 1 and 5 V analog subsystem on side 2-without external level shifters, as confirmed in Tables 1, 3, 4, and 5 of the datasheet.

Is external termination required for SI8460BA-A-IS1R outputs driving 15 pF loads?

No. The SI8460BA-A-IS1R integrates ~85 Ω output impedance (±40%) per channel, optimized for direct connection to 15 pF capacitive loads without series resistors or PCB trace termination. This simplifies layout and reduces BOM count, as stated in Notes 1 of Tables 3–5 and Section 2.4 (Layout Recommendations).