Skyworks Solutions Inc. SI8460AB-B-IS1

Overview

SI8460AB-B-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 <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), targeting high-speed isolated communication in industrial motor control and power inverters.

For engineers reviewing the SI8460AB-B-IS1 datasheet, SI8460AB-B-IS1 pinout, SI8460AB-B-IS1 application, or SI8460AB-B-IS1 equivalent, key selection criteria include its 2.5 kV_RMS reinforced insulation rating, 60-year lifetime at rated voltage, –40 to 125 °C operation at full speed, and precise timing performance critical for gate driver feedback loops and isolated ADC interfaces.

Technical Context

The SI8460AB-B-IS1 implements capacitive isolation using differential RF signaling across an on-chip SiO₂ barrier, enabling robust noise rejection without magnetic coupling or optocoupler aging. Its architecture supports independent primary and secondary supply domains (VDD1/VDD2), each configurable from 2.70 V to 5.5 V, with no start-up initialization required.

Timing precision is achieved via matched internal delay paths and on-die termination (85 Ω ±40%), minimizing pulse width distortion (<2.5 ns typ) and propagation delay skew (<3 ns P-P). The device meets IEC 60747-5-2 (VDE 0884-2), UL 1577, and CSA Component Notice 5A safety standards for reinforced insulation up to 2500 V_RMS.

Key Specifications

Pinout & Package

SI8460AB-B-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 ADUM140D0BRIZ and ISO6760QDWR, the SI8460AB-B-IS1 uniquely balances six-channel integration, 150 Mbps speed, sub-10 ns propagation delay, and ultra-low power consumption in a standard SOIC-16 footprint-making it optimal for industrial motor drives where timing precision and thermal efficiency are co-constrained.

Availability

SI8460AB-B-IS1 is available at Aetrix Electronics and suitable for industrial motor control, isolated power supplies, and automated test equipment requiring stable component supply and long-term lifecycle support.

Supply support for SI8460AB-B-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 for wireless, industrial, and automotive markets.

The Si84xx family was designed specifically for high-reliability, high-speed digital isolation in harsh electromagnetic environments-targeting industrial automation, energy infrastructure, and electric vehicle power systems.

FAQ

What is the maximum data rate supported by the SI8460AB-B-IS1?

The SI8460AB-B-IS1 supports a maximum data rate of 150 Mbps across all six channels under specified operating conditions (VDD = 5 V, TA = –40 to 125 °C). This is confirmed in Table 3 and Table 4 of the Skyworks datasheet Rev. 1.6, where Si846xBx variants-including SI8460AB-B-IS1-are explicitly rated for 150 Mbps operation with typical propagation delay of 6.0 ns and minimum pulse width of 6.0 ns.

Does the SI8460AB-B-IS1 require external components for basic operation?

Yes, the SI8460AB-B-IS1 requires only VDD bypass capacitors (0.1 µF ceramic) on both VDD1 and VDD2 pins for stable operation-no external resistors, transformers, or level shifters are needed. This is stated in the product description and verified in Section 3.1 of the datasheet, which specifies that "only VDD bypass capacitors are required" for functional operation.

What safety certifications apply to the SI8460AB-B-IS1?

The SI8460AB-B-IS1 holds UL 1577 (2500 V_RMS), CSA Component Notice 5A (IEC 61010-1, 60950-1), and VDE IEC 60747-5-2 (VDE 0884-2) certifications. These are documented in Table 6 and the Safety Regulatory Approvals section of the datasheet, confirming reinforced insulation compliance for industrial and medical equipment.

Can the SI8460AB-B-IS1 operate with mismatched supply voltages on VDD1 and VDD2?

Yes, the SI8460AB-B-IS1 supports independent supply rails: VDD1 and VDD2 can each be set between 2.70 V and 5.5 V, allowing mixed-voltage interfacing-for example, 3.3 V MCU logic on the primary side and 5 V analog circuitry on the secondary side. This is specified in Table 1 (Recommended Operating Conditions) and confirmed in the Functional Description section.

Is the SI8460AB-B-IS1 recommended for new designs?

No-the Skyworks datasheet Rev. 1.6 explicitly states "Not Recommended for New Designs" on the cover page and Section 3. This designation indicates the part is in mature or last-time-buy status; design-in should consider migration paths such as newer Si86xx or Si88xx families, though SI8460AB-B-IS1 remains fully supported for existing production and legacy repair.