Skyworks Solutions Inc. SI8430BB-D-IS

Overview

SI8430BB-D-IS from Skyworks Solutions is a triple-channel, ultra-low-power digital isolator in a 16-pin wide-body SOIC package, supporting up to 150 Mbps data rate, <9.5 ns worst-case propagation delay, and 2500 VRMS isolation. It operates from 2.70–5.5 V on both sides 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 SI8430BB-D-IS datasheet, SI8430BB-D-IS pinout, SI8430BB-D-IS application, or SI8430BB-D-IS equivalent, key selection criteria include its 150 Mbps capability, 0.5 ns typical channel-to-channel skew, AEC-Q100 qualification, and reinforced insulation certified to UL, CSA, and VDE standards for industrial and automotive systems.

Technical Context

The SI8430BB-D-IS implements capacitive isolation with on-chip RF modulation/demodulation across three independent bidirectional channels. Its dual-supply architecture (VDD1/VDD2) supports asymmetric voltage operation (e.g., 3.3 V/5 V), and integrated enable pins allow dynamic channel gating without external logic.

It features precise timing performance: 1.5 ns typical pulse width distortion, 2 ns propagation delay skew, and 25 kV/µs common-mode transient immunity (CMTI). All timing specs are guaranteed over –40 to +125 °C at 150 Mbps, with no start-up initialization required.

Key Specifications

Pinout & Package

SI8430BB-D-IS is housed in a RoHS-compliant 16-pin wide-body SOIC package (package outline per Skyworks Doc Rev. 1.7, page 28), providing 8.0 mm nominal creepage and clearance for reinforced insulation compliance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADUM1300BRWZ and ISO6731FDWR, the SI8430BB-D-IS uniquely combines 150 Mbps speed, AEC-Q100 qualification, and sub-10 ns propagation delay in a single wide-body SOIC package-making it optimal for next-generation EV inverters and high-bandwidth industrial controllers where timing precision and automotive reliability intersect.

Availability

SI8430BB-D-IS is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management, and isolated power supply design requiring stable component supply and long-term lifecycle support.

Supply support for SI8430BB-D-IS 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 designed specifically for high-reliability, high-speed digital isolation in harsh environments-targeting industrial automation, automotive electrification, and energy infrastructure applications demanding safety certification and extended temperature operation.

FAQ

What is the maximum data rate supported by the SI8430BB-D-IS?

The SI8430BB-D-IS supports a maximum data rate of 150 Mbps under specified conditions (VDD = 5 V, TA = –40 to +125 °C, CL = 15 pF). This is confirmed in Table 3 of the Skyworks datasheet Rev. 1.7, where Si843xBx variants-including SI8430BB-D-IS-are explicitly rated for 0–150 Mbps operation with 6 ns minimum pulse width.

Does the SI8430BB-D-IS require external bypass capacitors?

Yes-the SI8430BB-D-IS requires VDD bypass capacitors on both sides (VDD1 and VDD2), as stated in the datasheet introduction: "only VDD bypass capacitors are required." Typical implementation uses 100 nF ceramic capacitors placed close to each VDD pin, per Skyworks layout recommendations in Section 2.4.

Is the SI8430BB-D-IS pin-compatible with other Si843x variants?

No-pin compatibility is not guaranteed across Si843x variants. The SI8430BB-D-IS belongs to the Si8430Bx subgroup (triple-channel, high-speed), but pin functions differ between Si8430, Si8431, and Si8435 families. For example, Si8431 includes an additional direction-control pin not present in SI8430BB-D-IS, and enable pin mapping varies by revision.

What safety certifications apply to the SI8430BB-D-IS?

The SI8430BB-D-IS is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 (reinforced insulation). These are documented in Tables 6 and 7 of the datasheet, with all certifications applying to the 2.5 kVRMS-rated wide-body SOIC variant (D-IS suffix).

What is the operating temperature range for the SI8430BB-D-IS at full 150 Mbps data rate?

The SI8430BB-D-IS is fully specified for operation from –40 to +125 °C at 150 Mbps, as confirmed in Table 1 (Recommended Operating Conditions) and the "Features" section of the datasheet. This rating applies to both supply voltages (2.70–5.5 V) and includes worst-case propagation delay and skew guarantees across the full range.