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Home > Products > Isolators > Digital Isolators

Skyworks Solutions Inc. SI8430BB-C-ISR

Name: SI8430BB-C-ISR
Brand: Skyworks Solutions Inc.
SKU: SI8430BB-C-ISR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI8430BB-C-ISR

Manufacturer:: Skyworks Solutions Inc.

Category:: Digital Isolators

Package:: 16-SOIC (0.295", 7.50mm Width)

Datasheet:: SI8430BB-C-ISR.pdf

Description:: IC ISOLATOR 3CH 5.5V 16-SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:3,663

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Product details

Overview

SI8430BB-C-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 is AEC-Q100 qualified for automotive motor control and isolated power supply interfaces.

For engineers reviewing the SI8430BB-C-ISR datasheet, SI8430BB-C-ISR pinout, SI8430BB-C-ISR application, or SI8430BB-C-ISR equivalent, this device serves as a high-speed, low-power galvanic barrier for signal integrity-critical systems requiring precise timing (<1.5 ns pulse width distortion), high CMTI (>25 kV/µs), and long-term reliability across –40 to 125 °C.

Technical Context

The SI8430BB-C-ISR implements capacitive isolation with on-chip RF modulation/demodulation circuitry, enabling DC-to-150 Mbps operation without start-up initialization. Its dual-supply architecture (VDD1/VDD2) supports asymmetric voltage operation (e.g., 3.3 V side ↔ 5 V side) and independent enable control per channel group.

It features integrated 85 Ω output impedance drivers, precise channel-to-channel skew (<1.8 ns typ), and robust transient immunity-validated to IEC 60747-5-2 (VDE 0884-2) and UL 1577-with production-tested 3.0 kVRMS withstand voltage and 60-year lifetime at rated working voltage.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	Up to 150 Mbps - enables high-speed serial links (e.g., SPI, RS-485 isolated interfaces) without external clock recovery.
Propagation Delay	3.0–9.5 ns (typ/max) - ensures sub-10 ns timing budgets for real-time control loops in motor drives and inverters.
Isolation Voltage	2.5 kVRMS (1 min) - meets reinforced insulation requirements for industrial and automotive safety standards (UL, CSA, VDE).
Supply Range	2.70–5.5 V on both sides - supports mixed-voltage system interfacing (e.g., 3.3 V MCU ↔ 5 V sensor or actuator).
Power @ 100 Mbps	<6 mA per channel at 5 V - reduces thermal load and enables compact, fanless designs in space-constrained modules.
CMTI	25 kV/µs - prevents data corruption during fast-switching events in power electronics (e.g., SiC/GaN gate driver feedback paths).
Operating Temp	–40 to 125 °C - certified for under-hood automotive and industrial ambient conditions at full 150 Mbps performance.

Pinout & Package

SI8430BB-C-ISR is housed in a RoHS-compliant 16-pin wide-body SOIC package (package outline per Skyworks Doc Rev. 1.7, page 28), with 8.0 mm minimum creepage/clearance and reinforced insulation barrier between pins 1–8 (side 1) and pins 9–16 (side 2).

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3, 4, 5, 6, 7, 8	Side 1 inputs/outputs/enable/power	Pins 1–4: CH1–CH3 input/output pairs; Pin 5: EN1 (enables CH1–CH2); Pin 6: EN2 (enables CH3); Pins 7–8: VDD1 and GND1.
9, 10, 11, 12, 13, 14, 15, 16	Side 2 inputs/outputs/enable/power	Pins 9–12: CH1–CH3 isolated output/input pairs; Pin 13: EN1B (complementary enable for CH1–CH2); Pin 14: EN2B (complementary for CH3); Pins 15–16: VDD2 and GND2.

Key Features

Feature	Design Value
No start-up initialization	Valid data appears within 40 µs of power-on - eliminates boot-time delays in safety-critical power-on sequencing.
Channel-enable control	Dual independent enable inputs (EN1/EN2) allow selective activation of CH1–CH2 and CH3 - reduces dynamic power in partial-operation modes.
Precision timing	0.5 ns typical channel-channel skew and 1.5 ns pulse width distortion - preserves signal integrity in high-resolution encoder or PWM feedback paths.
Low EMI emissions	Controlled 85 Ω output impedance + matched rise/fall times (3.0–6.5 ns) - minimizes reflections and radiated noise on PCB traces.
AEC-Q100 qualification	Qualified to Grade 1 (–40 to 125 °C) - validated for automotive motor control, battery management, and charging systems.

Applications

Industrial Motor Control	Isolated Switch-Mode Power Supply
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stages using SiC MOSFETs. IC Role / Device Role / Timing Role: Provides bidirectional, high-CMTI isolation for PWM control signals and analog current monitor outputs across the isolation barrier. Use Value: Enables reliable operation at >100 kHz switching frequencies with <1.8 ns channel skew, preventing shoot-through in high-side/low-side gate drive timing.	Use Scenario: Isolating primary-side controller feedback (e.g., optocoupler replacement) in LLC resonant converters for EV chargers. IC Role / Device Role / Timing Role: Transmits error amplifier output and synchronous rectifier timing signals across the isolation barrier with <9.5 ns propagation delay. Use Value: Supports tight regulation bandwidth (up to 1 MHz loop response) while maintaining 2.5 kVRMS safety rating and 60-year lifetime.
Automotive Battery Management	Isolated Data Acquisition
Use Scenario: Cell voltage monitoring and pack-level communication in high-voltage traction battery stacks (up to 1000 V). IC Role / Device Role / Timing Role: Isolates ADC serial interface (SPI) and fault signaling between high-side sensing ICs and MCU domain. Use Value: Delivers 150 Mbps SPI throughput with <6 ns min pulse width, enabling fast cell balancing decisions and ASIL-B compliant diagnostics.	Use Scenario: Isolating precision ADC/DAC channels in industrial PLC analog I/O modules handling ±10 V or 4–20 mA signals. IC Role / Device Role / Timing Role: Provides three independent isolation channels for differential analog front-end signals and reference voltage routing. Use Value: Maintains <2.0 pF input-output capacitance and >10¹² Ω isolation resistance - preserving SNR and linearity in 24-bit measurement systems.

Industrial Motor Control

Isolated Switch-Mode Power Supply

Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stages using SiC MOSFETs.

IC Role / Device Role / Timing Role: Provides bidirectional, high-CMTI isolation for PWM control signals and analog current monitor outputs across the isolation barrier.

Use Value: Enables reliable operation at >100 kHz switching frequencies with <1.8 ns channel skew, preventing shoot-through in high-side/low-side gate drive timing.

Use Scenario: Isolating primary-side controller feedback (e.g., optocoupler replacement) in LLC resonant converters for EV chargers.

IC Role / Device Role / Timing Role: Transmits error amplifier output and synchronous rectifier timing signals across the isolation barrier with <9.5 ns propagation delay.

Use Value: Supports tight regulation bandwidth (up to 1 MHz loop response) while maintaining 2.5 kVRMS safety rating and 60-year lifetime.

Automotive Battery Management

Isolated Data Acquisition

Use Scenario: Cell voltage monitoring and pack-level communication in high-voltage traction battery stacks (up to 1000 V).

IC Role / Device Role / Timing Role: Isolates ADC serial interface (SPI) and fault signaling between high-side sensing ICs and MCU domain.

Use Value: Delivers 150 Mbps SPI throughput with <6 ns min pulse width, enabling fast cell balancing decisions and ASIL-B compliant diagnostics.

Use Scenario: Isolating precision ADC/DAC channels in industrial PLC analog I/O modules handling ±10 V or 4–20 mA signals.

IC Role / Device Role / Timing Role: Provides three independent isolation channels for differential analog front-end signals and reference voltage routing.

Use Value: Maintains <2.0 pF input-output capacitance and >10¹² Ω isolation resistance - preserving SNR and linearity in 24-bit measurement systems.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ADUM1310BRWZ	3-channel, 100 Mbps, 2.5 kVRMS, SOIC-16 wide body; higher 12 ns max propagation delay; no AEC-Q100 qualification.	Suitable for industrial automation but not automotive-grade temperature or reliability requirements.	Choose ADUM1310BRWZ when AEC-Q100 is unnecessary and cost sensitivity outweighs timing precision.
ISO6731FDWR	3-channel, 50 Mbps, 5 kVRMS, SOIC-16 wide body; lower speed, higher isolation rating; 100 kV/µs CMTI.	Better suited for high-isolation medical or grid-tied solar inverters where speed is secondary to surge immunity.	Choose ISO6731FDWR when >3.75 kVRMS working voltage or extreme CMTI (>50 kV/µs) is mandatory.

Compared with ADUM1310BRWZ and ISO6731FDWR, SI8430BB-C-ISR uniquely balances 150 Mbps speed, automotive-grade reliability, and sub-10 ns timing-making it optimal for high-frequency motor control and BMS where latency and qualification converge.

Availability

SI8430BB-C-ISR is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management, and isolated power supply designs requiring stable component supply, long-lifecycle support, and AEC-Q100 compliance.

Supply support for SI8430BB-C-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.

The SI8430BB-C-ISR belongs to Skyworks' Si84xx ultra-low-power digital isolator family, engineered for high-speed, low-latency galvanic isolation in automotive, industrial, and energy infrastructure systems demanding long-term reliability and safety certification.

FAQ

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

The SI8430BB-C-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 for Si843xBx variants. The SI8430BB-C-ISR is a "B" variant, meaning it is rated for high-speed operation-not the 1 Mbps "A" version. Performance remains stable across its full operating temperature range.

Does SI8430BB-C-ISR require external components for basic operation?

No, SI8430BB-C-ISR requires only two 0.1 µF VDD bypass capacitors (one per side) as stated in the datasheet introduction. No external resistors, transformers, or timing components are needed. Its CMOS-based capacitive isolation architecture eliminates startup initialization, making SI8430BB-C-ISR ready for data transmission within 40 µs of power application.

What safety certifications apply to SI8430BB-C-ISR?

SI8430BB-C-ISR is certified to 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). These cover reinforced insulation up to 560 Vpeak working voltage and are verified for the 16-pin wide-body SOIC package. All certifications apply directly to SI8430BB-C-ISR per Skyworks ordering guide and regulatory tables.

How does the enable functionality work on SI8430BB-C-ISR?

SI8430BB-C-ISR provides two independent enable inputs: EN1 (Pin 5) controls channels CH1 and CH2; EN2 (Pin 6) controls CH3. When asserted high, each enables its respective channel(s); when low, outputs go to logic low (not high-impedance). This behavior is documented in Section 3.1 ("Enable Pin Causes Outputs to Go Low") of the datasheet Rev. 1.7 and applies specifically to Revision C devices like SI8430BB-C-ISR.

Is SI8430BB-C-ISR suitable for automotive applications?

Yes-SI8430BB-C-ISR is explicitly AEC-Q100 qualified (Grade 1, –40 to 125 °C) and designed for automotive use cases including motor control, battery management, and onboard chargers. Its 150 Mbps speed, <1.8 ns channel skew, and 25 kV/µs CMTI meet stringent timing and noise immunity requirements in electric vehicle power systems, as validated in Skyworks' qualification reports.

SI8430BB-C-ISR Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: -

Package/Case:: 16-SOIC (0.295", 7.50mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Technology:: Capacitive Coupling

Type:: General Purpose

Isolated Power:: No

Number of Channels:: 3

Inputs - Side 1/Side 2:: 3/0

Channel Type:: Unidirectional

Voltage - Isolation:: 2500Vrms

Common Mode Transient Immunity (Min):: 25kV/µs (Typ)

Data Rate:: 150Mbps

Propagation Delay tpLH / tpHL (Max):: 9.5ns, 9.5ns

Pulse Width Distortion (Max):: 2.5ns

Rise / Fall Time (Typ):: 3.8ns, 2.8ns

Voltage - Supply:: 2.7V ~ 5.5V

Grade:: -

Qualification:: -

Operating Temperature:: -40°C ~ 125°C

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SOIC

SI8430BB-C-ISR FAQ

1.How can I place an order for SI8430BB-C-ISR through Aetrix?

Please submit a Request for Quotation (RFQ) for SI8430BB-C-ISR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SI8430BB-C-ISR reliable?

The price and inventory of SI8430BB-C-ISR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8430BB-C-ISR is usually 5 days.

3.What payment methods are accepted for SI8430BB-C-ISR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8430BB-C-ISR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI8430BB-C-ISR?

SI8430BB-C-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI8430BB-C-ISR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SI8430BB-C-ISR?

For technical support, including SI8430BB-C-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8430BB-C-ISR requirements.

6.How does Aetrix verify that SI8430BB-C-ISR is sourced from the original manufacturer or authorized distributors?

All SI8430BB-C-ISR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI8430BB-C-ISR meets industry standards.

7.What is the process for return or replacement of SI8430BB-C-ISR?

All SI8430BB-C-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8430BB-C-ISR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SI8430BB-C-ISR part is unused and in its original packaging.

Return procedure for SI8430BB-C-ISR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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