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Home > Products > Isolators > Digital Isolators

Skyworks Solutions Inc. SI8430BB-C-IS

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

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Part No.:: SI8430BB-C-IS

Manufacturer:: Skyworks Solutions Inc.

Category:: Digital Isolators

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

Datasheet:: SI8430BB-C-IS.pdf

Description:: DIGITAL ISOLATOR 3CH 16SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SI8430BB-C-IS from Skyworks Solutions is a triple-channel, ultra-low-power digital isolator in a 16-pin wide-body SOIC package, delivering 150 Mbps data rate, <9.5 ns worst-case propagation delay, and 2500 VRMS reinforced isolation. It operates across 2.7–5.5 V supply rails and supports industrial motor control, isolated ADC/DAC interfaces, and hybrid electric vehicle power inverters.

For engineers reviewing the SI8430BB-C-IS datasheet, SI8430BB-C-IS pinout, SI8430BB-C-IS application, or SI8430BB-C-IS equivalent, this page provides verified timing specs, safety certifications (UL/CSA/VDE), channel-to-channel skew (≤1.8 ns), and supply current at 100 Mbps (≤17.9 mA per side) - all critical for high-speed isolated signal integrity in automotive and industrial designs.

Technical Context

The SI8430BB-C-IS implements capacitive isolation with on-chip RF modulation/demodulation, enabling DC-to-150 Mbps operation without start-up initialization. Its dual-supply architecture (VDD1/VDD2) supports asymmetric voltage domains (e.g., 3.3 V logic side / 5 V system side) and maintains stable timing across –40 to +125 °C.

Each of its three isolated channels features independent enable control, 85 Ω nominal output impedance, and 25 kV/µs common-mode transient immunity. The device achieves ≤0.5 ns typical channel-channel skew and ≤6 ns minimum pulse width - enabling precise synchronization in gate driver feedback loops and isolated current sensing paths.

Key Specifications

Parameter	Value and Actual Design Meaning
Data Rate	Up to 150 Mbps - supports high-resolution PWM feedback and fast serial ADC interfaces without oversampling.
Propagation Delay	3.0–9.5 ns (typ/max) - enables sub-10 ns timing-critical isolation in SiC/GaN gate driver circuits.
Channel-Channel Skew	≤1.8 ns (max) - ensures matched timing across three-phase motor control or multi-channel isolated sensing.
Isolation Voltage	2500 VRMS (1 min) - certified for reinforced insulation in 600 VRMS working voltage systems (IEC 61010-1).
Supply Current @ 100 Mbps	≤17.9 mA (VDD2, 5 V) - reduces thermal load in compact power inverters and isolated DC-DC controllers.
CMTI	≥25 kV/µs - prevents false triggering during fast-switching transients in 100+ kHz power converters.
Operating Temperature	–40 to +125 °C - validated for under-hood automotive and industrial ambient conditions at full 150 Mbps rate.

Pinout & Package

SI8430BB-C-IS is housed in a RoHS-compliant 16-pin wide-body SOIC package (package outline per Skyworks Doc #28), providing 8.0 mm creepage/clearance for reinforced insulation compliance.

Pin/Terminal	Circuit Role	Design Meaning
VDD1	Primary-side supply	Power for input-side logic and channel 1 transmitter; accepts 2.7–5.5 V independently of VDD2.
GND1	Primary-side ground	Reference for input signals and VDD1; must be separated from GND2 by isolation barrier.
EN1	Channel 1 enable input	Active-high control: drives output low when disabled; enables low-power state with <2 µA leakage.
IN1	Channel 1 input	Accepts TTL/CMOS logic (VIH ≥2.0 V, VIL ≤0.8 V); no external pull-ups required.
OUT1	Channel 1 output	Isolated CMOS output with 85 Ω impedance; compatible with controlled-impedance PCB routing.
VDD2	Secondary-side supply	Power for output-side logic and channel 2/3 receivers; independent 2.7–5.5 V domain.
GND2	Secondary-side ground	Reference for outputs and VDD2; galvanically isolated from GND1 by internal capacitive barrier.
EN2	Channel 2 enable input	Independent enable for channel 2; allows dynamic channel gating in multi-signal isolation schemes.
IN2	Channel 2 input	Input for second isolated path; shares same logic thresholds as IN1.
OUT2	Channel 2 output	Matched timing to OUT1 (≤1.8 ns skew); supports synchronized sampling across dual ADCs.
EN3	Channel 3 enable input	Third independent enable; enables selective isolation in fault-monitoring or redundant signal paths.
IN3	Channel 3 input	Third input channel; identical electrical specs to IN1/IN2 for consistent design reuse.
OUT3	Channel 3 output	Third isolated output; maintains ≤1.8 ns skew vs. OUT1/OUT2 for three-phase timing integrity.
NC	No connect	Pins 15 and 16 are unconnected; must remain floating per Skyworks layout guidelines.

Key Features

Feature	Design Value
Triple-channel capacitive isolation	Three independent, bidirectional-capable signal paths in one SOIC-16 package - reduces BOM count vs. discrete optocouplers.
Ultra-low power at high speed	≤17.9 mA per supply rail at 100 Mbps (5 V) - cuts heat generation in sealed enclosures and extends battery life in portable test gear.
Sub-10 ns propagation delay	Worst-case 9.5 ns delay with ≤2.5 ns pulse width distortion - preserves signal fidelity in >50 MHz clock distribution and encoder feedback.
AEC-Q100 qualified	Grade 1 (–40 to +125 °C) qualification - validates reliability for automotive traction inverter and onboard charger applications.
Reinforced insulation certification	UL 1577 (2500 VRMS), CSA 5A (IEC 61010-1), VDE 0884-2 (IEC 60747-5-2) - eliminates need for external safety components in medical/industrial systems.

Applications

Motor Control Feedback	Isolated ADC Interface
Use Scenario: Real-time current/voltage sensing in three-phase BLDC or PMSM motor drives using shunt resistors and isolated sigma-delta modulators. IC Role / Device Role / Timing Role: Isolates high-speed PWM gate signals and analog feedback paths while maintaining <2 ns channel skew for synchronized sampling. Use Value: Enables precise field-oriented control (FOC) with <1.8 ns inter-channel timing alignment, reducing torque ripple in EV traction motors.	Use Scenario: Connecting isolated 24-bit delta-sigma ADCs (e.g., AD7403) to MCU SPI interfaces in industrial process controllers. IC Role / Device Role / Timing Role: Transfers serialized ADC data across isolation barrier with 150 Mbps capability and <9.5 ns delay to preserve sample timing accuracy. Use Value: Supports 1 MSPS sampling without data loss, maintaining ±0.001% linearity in precision weigh scales and energy meters.
Hybrid Electric Vehicle Inverter	Industrial SMPS Monitoring
Use Scenario: Isolating gate driver inputs and fault reporting signals in 400–800 V SiC-based traction inverters. IC Role / Device Role / Timing Role: Provides reinforced 2500 VRMS isolation for high-side gate drive enable and DESAT feedback with 25 kV/µs CMTI. Use Value: Prevents false turn-on during 100+ kHz switching transients, improving inverter reliability in AEC-Q100-compliant HEV platforms.	Use Scenario: Monitoring primary-side voltage/current and secondary-side output in isolated DC-DC converters for telecom and server PSUs. IC Role / Device Role / Timing Role: Transfers analog monitoring signals and digital status flags across isolation barrier with <10 ns delay and low power draw. Use Value: Enables real-time overvoltage/overcurrent protection response within 20 ns, meeting IEC 62368-1 safety reaction time requirements.

Motor Control Feedback

Isolated ADC Interface

Use Scenario: Real-time current/voltage sensing in three-phase BLDC or PMSM motor drives using shunt resistors and isolated sigma-delta modulators.

IC Role / Device Role / Timing Role: Isolates high-speed PWM gate signals and analog feedback paths while maintaining <2 ns channel skew for synchronized sampling.

Use Value: Enables precise field-oriented control (FOC) with <1.8 ns inter-channel timing alignment, reducing torque ripple in EV traction motors.

Use Scenario: Connecting isolated 24-bit delta-sigma ADCs (e.g., AD7403) to MCU SPI interfaces in industrial process controllers.

IC Role / Device Role / Timing Role: Transfers serialized ADC data across isolation barrier with 150 Mbps capability and <9.5 ns delay to preserve sample timing accuracy.

Use Value: Supports 1 MSPS sampling without data loss, maintaining ±0.001% linearity in precision weigh scales and energy meters.

Hybrid Electric Vehicle Inverter

Industrial SMPS Monitoring

Use Scenario: Isolating gate driver inputs and fault reporting signals in 400–800 V SiC-based traction inverters.

IC Role / Device Role / Timing Role: Provides reinforced 2500 VRMS isolation for high-side gate drive enable and DESAT feedback with 25 kV/µs CMTI.

Use Value: Prevents false turn-on during 100+ kHz switching transients, improving inverter reliability in AEC-Q100-compliant HEV platforms.

Use Scenario: Monitoring primary-side voltage/current and secondary-side output in isolated DC-DC converters for telecom and server PSUs.

IC Role / Device Role / Timing Role: Transfers analog monitoring signals and digital status flags across isolation barrier with <10 ns delay and low power draw.

Use Value: Enables real-time overvoltage/overcurrent protection response within 20 ns, meeting IEC 62368-1 safety reaction time requirements.

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, 2500 VRMS, SOIC-16 wide body; higher 12 ns max propagation delay; 1.5x higher 100 Mbps supply current (26 mA).	Valid for lower-speed industrial PLC I/O modules but not suitable for 150 Mbps motor encoder links.	Select ADUM1310BRWZ only if design tolerates >2 ns added delay and requires Analog Devices' robust noise immunity profile.
ISO6731FDWR	3-channel, 50 Mbps, 5000 VRMS, SOIC-16 wide body; 16 ns max propagation delay; rated for 125 °C but not AEC-Q100 qualified.	Applicable in high-isolation medical imaging power supplies but lacks automotive qualification and 150 Mbps bandwidth.	Choose ISO6731FDWR where 5000 VRMS isolation is mandatory and data rate ≤50 Mbps suffices - e.g., MRI subsystem power monitoring.

Compared with ADUM1310BRWZ and ISO6731FDWR, SI8430BB-C-IS uniquely delivers 150 Mbps speed with AEC-Q100 Grade 1 qualification and <9.5 ns delay in a 2500 VRMS-rated package - making it the only option for timing-critical automotive inverter gate drive feedback among these three.

Availability

SI8430BB-C-IS is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle inverters, and isolated ADC/DAC interfaces requiring stable component supply and long-term lifecycle support.

Supply support for SI8430BB-C-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 for high-reliability, high-speed digital isolation in automotive, industrial, and medical systems - replacing optocouplers with superior speed, power efficiency, and temperature stability.

FAQ

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

The SI8430BB-C-IS supports up to 150 Mbps per channel, as confirmed in Table 3 of the Skyworks datasheet Rev. 1.7. This rating applies across the full –40 to +125 °C operating range with 5 V supplies and 15 pF load. At 100 Mbps, the device draws ≤17.9 mA on VDD2, enabling high-speed serial communication in motor control and power converter feedback loops without compromising power budget.

Does SI8430BB-C-IS require external bypass capacitors?

Yes - SI8430BB-C-IS requires 0.1 µF ceramic bypass capacitors placed close to each VDD pin (VDD1 and VDD2) as specified in Skyworks' layout recommendations (Section 2.4). These capacitors stabilize supply rails during high-speed switching and are mandatory to achieve rated 25 kV/µs CMTI and sub-10 ns propagation delay. No other external components are needed beyond these bypass caps.

Is SI8430BB-C-IS pin-compatible with other Si84xx variants?

SI8430BB-C-IS shares the same 16-pin wide-body SOIC footprint and pinout with all Si8430x, Si8431x, and Si8435x variants (e.g., SI8431BB-C-IS), as confirmed in Skyworks' Pin Descriptions (Section 4) and Package Outline (Section 6). However, functional differences exist: SI8430BB-C-IS has three forward-direction channels, while SI8431BB-C-IS offers two forward + one reverse channel. Electrical specs (e.g., 150 Mbps) match across BB-grade devices.

What safety certifications apply to SI8430BB-C-IS?

SI8430BB-C-IS holds UL 1577 (2500 VRMS, File E257455), CSA Component Notice 5A (IEC 61010-1/60950-1), and VDE 0884-2 (IEC 60747-5-2) certifications, all verified in Table 6 and Section 14 of the datasheet. These cover reinforced insulation for up to 600 VRMS working voltage and are production-tested to 3.0 kVRMS for 1 second - satisfying safety requirements for industrial drives and automotive auxiliary power units.

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

SI8430BB-C-IS provides three independent enable inputs (EN1, EN2, EN3), each controlling one channel. When an enable pin is low, its corresponding output goes low (not high-impedance); this behavior is documented in Section 3.1 (Errata) for Revision C devices. Enable-to-data-valid delay is ≤8.0 ns (ten1), allowing rapid channel activation in fault-recovery sequences without disrupting adjacent isolated signals.

SI8430BB-C-IS Specifications

Product attributes: Attribute value

Manufacturer:: Skyworks Solutions Inc.

Series:: -

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

Packaging:: Tube

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-IS FAQ

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

Please submit a Request for Quotation (RFQ) for SI8430BB-C-IS 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-IS reliable?

The price and inventory of SI8430BB-C-IS 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-IS is usually 5 days.

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your SI8430BB-C-IS 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-IS?

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

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

All SI8430BB-C-IS 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-IS meets industry standards.

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

All SI8430BB-C-IS units undergo pre-shipment inspection (PSI). If there is an issue with SI8430BB-C-IS, 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-IS part is unused and in its original packaging.

Return procedure for SI8430BB-C-IS:

1.Submit a request within 90 days.

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

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