Skyworks Solutions Inc. SI8463AB-A-IS1

Overview

SI8463AB-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 <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 <17.2 mA per side at 100 Mbps (5 V), targeting high-speed isolated communication in motor control and power inverters.

For engineers reviewing the SI8463AB-A-IS1 datasheet, SI8463AB-A-IS1 pinout, SI8463AB-A-IS1 application, or SI8463AB-A-IS1 equivalent, this page provides verified timing specs, isolation safety certifications (UL 2500 VRMS, VDE IEC 60747-5-2, CSA 61010-1), supply current behavior at 2.7 V/3.3 V/5 V, and real-world design meaning for pulse width distortion (1.5 ns typ) and start-up time (15–40 µs).

Technical Context

The SI8463AB-A-IS1 implements capacitive isolation with on-chip RF modulation/demodulation, enabling DC-to-150 Mbps signal transmission across galvanically isolated boundaries without start-up initialization. Its dual-supply architecture (VDD1/VDD2) supports asymmetric voltage operation (e.g., 3.3 V on primary, 5 V on secondary) while maintaining precise timing-propagation delay skew ≤3.0 ns (P-P) and pulse width distortion ≤2.5 ns.

Designed for reinforced insulation systems, it achieves 2500 VRMS withstand voltage (1 min), validated per UL 1577, VDE 0884-2, and CSA Component Notice 5A. The device integrates 85 Ω nominal output impedance per channel for controlled-impedance PCB trace termination and meets 60-year lifetime at rated working voltage under industrial temperature range (–40 °C to +125 °C).

Key Specifications

Pinout & Package

SI8463AB-A-IS1 uses a 16-pin narrow-body SOIC package (5.3 mm width, JEDEC MS-012AC), with creepage/clearance ≥3.9 mm and internal gap ≥0.008 mm. Pin functions are symmetrically distributed across two sides: Channels 1–3 on left (pins 1–3, 5–6, 8), Channels 4–6 on right (pins 10–12, 14–15, 16), with VDD1/VDD2 and GND on dedicated pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM140D0BRIZ and ISO6763DR, SI8463AB-A-IS1 uniquely balances six-channel count, 150 Mbps speed, and ultra-low 17.2 mA supply current at 5 V-making it optimal for compact, high-efficiency motor control and OBC designs where channel density and thermal budget are critical.

Availability

SI8463AB-A-IS1 is available at Aetrix Electronics and suitable for industrial motor drives, EV onboard chargers, and isolated power supply feedback requiring stable component supply, long-term lifecycle assurance, and compliance with UL/VDE/CSA safety standards.

Supply support for SI8463AB-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 to replace optocouplers in high-reliability industrial and automotive systems, delivering superior speed, power efficiency, and lifetime stability through capacitive isolation architecture.

FAQ

What is the maximum data rate supported by SI8463AB-A-IS1?

The SI8463AB-A-IS1 supports a maximum data rate of 150 Mbps under standard operating conditions (VDD = 5 V, TA = –40 °C to +125 °C). This is confirmed in Table 3 timing characteristics for Si846xBx variants, where SI8463AB-A-IS1 falls. Performance remains stable across supply voltages (2.70–5.5 V) and temperature, making SI8463AB-A-IS1 suitable for high-speed SPI, UART, and digital encoder interfaces.

Does SI8463AB-A-IS1 require external components for startup or biasing?

No, SI8463AB-A-IS1 requires no start-up initialization and operates immediately upon power application. Only 0.1 µF bypass capacitors on VDD1 and VDD2 are needed-no pull-up/down resistors, timing crystals, or configuration pins. This simplifies design and eliminates boot-time uncertainty, a key advantage over microcontroller-based isolators. SI8463AB-A-IS1 achieves valid output within 40 µs (tSU max) after power-on.

What safety certifications apply to SI8463AB-A-IS1?

SI8463AB-A-IS1 is certified to UL 1577 (2500 VRMS, 1 min), VDE IEC 60747-5-2 (reinforced insulation), and CSA Component Notice 5A (IEC 61010-1, 60950-1). These approvals cover the full 2.5 kVRMS isolation rating and validate creepage/clearance ≥3.9 mm in the narrow-body SOIC package. Regulatory documentation is filed under UL E257455, VDE 5006301-4880-0001, and CSA 232873.

How does SI8463AB-A-IS1 perform at 2.7 V supply voltage?

At 2.70 V, SI8463AB-A-IS1 maintains 150 Mbps capability with increased supply current: 10.5 mA per side at 100 Mbps (Table 5). Propagation delay increases slightly (max 9.5 ns still holds), and output drive strength reduces (VOH ≥2.3 V, VOL ≤0.4 V). The device remains fully functional across –40 °C to +125 °C, enabling battery-powered or low-voltage industrial sensors to use SI8463AB-A-IS1 without performance compromise.

Can SI8463AB-A-IS1 replace optocouplers in existing designs?

Yes, SI8463AB-A-IS1 is pin-compatible with industry-standard 16-pin narrow-body SOIC optocoupler footprints (e.g., HCPL-0723, TLP2362), supporting direct PCB-level replacement. Its 3.9 mm creepage/clearance meets or exceeds optocoupler requirements, and its 25 kV/µs CMTI far surpasses typical optocoupler immunity (<15 kV/µs). No layout changes are required-only update bypass caps and verify VDD decoupling per Skyworks' layout guidelines.