Skyworks Solutions Inc. SI8430BB-D-ISR

Overview

SI8430BB-D-ISR 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 2.5 kVRMS reinforced isolation. It operates from 2.70–5.5 V on both sides, delivers <6 mA per channel at 100 Mbps (5 V), and targets isolated communication in industrial motor control and power inverters.

For engineers reviewing the SI8430BB-D-ISR datasheet, SI8430BB-D-ISR pinout, SI8430BB-D-ISR application, or SI8430BB-D-ISR equivalent, this page provides verified timing specs, safety certifications (UL, CSA, VDE), supply current behavior across 2.7 V/3.3 V/5 V, and precise skew metrics critical for high-speed synchronous isolation in power electronics and automotive subsystems.

Technical Context

The SI8430BB-D-ISR implements capacitive isolation with on-chip RF modulation/demodulation, enabling DC-to-150 Mbps signal transfer without start-up initialization. Its dual-supply architecture supports independent VDD1 and VDD2 rails (2.70–5.5 V), allowing level-shifting between domains while maintaining <0.5 ns typical channel-channel skew and 25 kV/µs common-mode transient immunity.

It features an active-enable input (EN) that places outputs in high-impedance state when low, with 5–8 ns enable-to-data-valid timing. The device achieves 60-year lifetime at rated working voltage and meets IEC 60747-5-2 (VDE 0884-2) for reinforced insulation, with 8.0 mm clearance/creepage in the wide-body SOIC package.

Key Specifications

Pinout & Package

SI8430BB-D-ISR is housed in a RoHS-compliant 16-pin wide-body SOIC package (package outline per Skyworks Doc Rev. 1.7, p.28), with 8.0 mm minimum 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 ADUM1310BRWZ and ISO6731FDWR, SI8430BB-D-ISR uniquely balances 150 Mbps bandwidth, sub-10 ns propagation delay, and 2.5 kVRMS certification in a single wide-body SOIC - making it optimal for next-generation EV inverters and high-fidelity isolated data acquisition where speed and precision are co-constrained.

Availability

SI8430BB-D-ISR is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle inverters, and isolated switch-mode power supplies requiring stable component supply, long-term lifecycle support, and full regulatory documentation traceability.

Supply support for SI8430BB-D-ISR 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 high-reliability applications.

The SI8430BB-D-ISR belongs to Skyworks' Si84xx ultra-low-power digital isolator family, engineered for high-speed, low-latency galvanic isolation in power electronics, automotive electrification, and industrial automation where legacy optocouplers fail to meet performance or longevity targets.

FAQ

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

The SI8430BB-D-ISR 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-ISR) list 150 Mbps as the upper limit for reliable operation with <9.5 ns worst-case propagation delay.

Does SI8430BB-D-ISR require external startup configuration?

No, SI8430BB-D-ISR requires no start-up initialization. As stated in the Features section of the datasheet, it begins transmitting valid data within 40 µs of power application (tSU = 15–40 µs), eliminating firmware delays or configuration sequences needed by programmable isolators. This behavior is intrinsic to its capacitive isolation architecture.

What safety certifications apply to SI8430BB-D-ISR?

SI8430BB-D-ISR holds UL 1577 (2500 VRMS, File E257455), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 (File 5006301-4880-0001) certifications. All apply to the 2.5 kVRMS isolation rating, with production testing performed at 3.0 kVRMS for 1 second per Table 6 and Note * on page 14.

How does the enable (EN) pin function on SI8430BB-D-ISR?

The EN pin on SI8430BB-D-ISR controls output tri-state: when pulled low, all three output channels enter high-impedance mode within 7.0–9.2 ns (ten2); when high, outputs reflect input states with 5.0–8.0 ns enable-to-data-valid latency (ten1). Pin 7 is dedicated to EN, and internal pull-down ensures default disable at power-up.

Is SI8430BB-D-ISR compatible with 2.7 V logic systems?

Yes, SI8430BB-D-ISR operates across 2.70–5.5 V on both VDD1 and VDD2 rails. At 2.7 V, it delivers <4 mA per channel at 100 Mbps (per Table 5), maintains 150 Mbps data rate, and retains full timing specs including <9.5 ns propagation delay and 0.5 ns typical channel-channel skew - validated over –40 to +125 °C.