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Skyworks Solutions Inc. SI8442BB-D-IUR
- Part No.:
- SI8442BB-D-IUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8442BB-D-IUR.pdf
- Description:
- IC DIGITAL ISOLATOR SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,749
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Product details
Overview
SI8442BB-D-IUR from Silicon Labs is a quad-channel, ultra-low-power digital isolator with reinforced isolation rated at 2500 VRMS, supporting up to 150 Mbps data rate and worst-case propagation delay under 9.5 ns. It operates across 2.70–5.5 V supply rails on both sides and delivers <11.8 mA per channel at 100 Mbps (5 V), enabling high-speed signal integrity in isolated power and motor control interfaces.
For engineers reviewing the SI8442BB-D-IUR datasheet, SI8442BB-D-IUR pinout, SI8442BB-D-IUR application, or SI8442BB-D-IUR equivalent, key selection criteria include its 150 Mbps capability, 0.5 ns typical channel-to-channel skew, 25 kV/µs CMTI, AEC-Q100 qualification, and SOIC-16 narrow-body package compatibility with space-constrained industrial and automotive designs.
Technical Context
The SI8442BB-D-IUR implements RF-based on/off keying modulation across a semiconductor isolation barrier-eliminating start-up initialization and delivering stable timing over –40 to +125 °C. Each of its four bidirectional channels features independent enable control, 85 Ω nominal output impedance, and precise edge alignment for high-fidelity serial interface isolation.
It supports dual-supply operation (VDD1/VDD2 = 2.70–5.5 V), achieves 6 ns minimum pulse width at 150 Mbps, and maintains <2.5 ns pulse width distortion and <3.0 ns propagation delay skew between channels-critical for synchronous ADC sampling, PWM feedback, and isolated SPI/I²C timing paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS (UL, CSA, VDE certified; 3600 VRMS max test voltage) |
| Data Rate | Up to 150 Mbps - enables real-time isolation of high-speed digital buses (e.g., isolated SPI, CAN FD physical layer signaling) |
| Propagation Delay | 3.0–9.5 ns (typ/max) - ensures sub-10 ns latency for closed-loop motor control and fast ADC/DAC interfaces |
| Channel-Channel Skew | 0.5–1.8 ns (typ/max) - preserves phase alignment across multi-channel isolated signals (e.g., three-phase current sensing) |
| CMTI | 25 kV/µs - rejects high dv/dt noise in switching power supplies and inverters without data corruption |
| Supply Voltage Range | 2.70–5.5 V on both sides - supports interoperability with 3.3 V microcontrollers and 5 V legacy logic |
| Power @ 100 Mbps | 11.8 mA per channel (5 V) - reduces thermal load in densely packed isolated gate driver or sensor front-end designs |
Pinout & Package
SI8442BB-D-IUR is housed in a RoHS-compliant 16-pin narrow-body SOIC package (5.3 mm width), optimized for PCB area efficiency while maintaining 4.01 mm creepage and 4.9 mm clearance per IEC 60664-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Input A1–A4 (primary side) | Digital input signals referenced to VDD1; accept 2.0 V min VIH and 0.8 V max VIL |
| 5, 6, 7, 8 | Output B1–B4 (secondary side) | Isolated CMOS outputs referenced to VDD2; drive ±4 mA into 15 pF loads |
| 9, 10, 11, 12 | Enable EN1–EN4 (active-high) | Per-channel enable control; outputs go high-impedance when low; 2 µA max input current |
| 13, 14 | VDD1, GND1 | Primary-side power and ground; bypass capacitor required per datasheet layout guidelines |
| 15, 16 | VDD2, GND2 | Secondary-side power and ground; independent rail allows level shifting between 2.7 V and 5.5 V domains |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates optical degradation and start-up delays; no initialization sequence required at power-on |
| Per-channel enable inputs | Allows dynamic channel gating for power optimization in burst-mode communication or fault-safe shutdown |
| 60-year lifetime at rated working voltage | Validated reliability for long-lifecycle industrial and automotive applications without derating |
| AEC-Q100 qualified | Qualified for automotive-grade temperature range (–40 to +125 °C) and ESD robustness (±8 kV HBM) |
| Ultra-low power at high speed | 11.8 mA/channel @ 100 Mbps (5 V) - enables 4-channel isolation in thermally constrained enclosures |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter drives. IC Role / Device Role / Timing Role: Quad-channel isolator providing synchronized PWM input isolation and analog-to-digital converter (ADC) output isolation with <1.8 ns channel skew. Use Value: Enables precise dead-time control and fast overcurrent response by preserving nanosecond-level timing integrity across all four channels. |
Use Scenario: Isolating primary-side controller signals and secondary-side voltage/current feedback in LLC resonant converters. IC Role / Device Role / Timing Role: Bidirectional isolator transmitting PWM commands upstream and isolated telemetry downstream with 25 kV/µs CMTI immunity. Use Value: Prevents common-mode noise coupling from high dv/dt switching nodes, ensuring stable regulation and eliminating false fault triggers. |
| Hybrid Electric Vehicle Battery Management | Isolated Industrial Data Acquisition |
Use Scenario: Isolating cell voltage monitoring and balancing signals across stacked battery modules in HEV/EV packs. IC Role / Device Role / Timing Role: Four independent isolation channels linking microcontroller I/O to isolated ADCs and MOSFET drivers in each module. Use Value: Supports simultaneous sampling of 4 cell groups with <1.8 ns inter-channel skew, critical for accurate state-of-charge calculation. |
Use Scenario: Isolating high-resolution sigma-delta ADC outputs and SPI clock/data lines in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: High-speed digital isolator preserving 150 Mbps SPI timing between isolated ADC and host MCU. Use Value: Maintains full ADC throughput (e.g., 24-bit @ 1 MSPS) without timing jitter-induced quantization error. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRZ | 150 Mbps, 10 ns max propagation delay, 2.5 kVRMS, SOIC-16 wide-body (7.5 mm) | Wider package requires more PCB area; lower CMTI (10 kV/µs); no AEC-Q100 qualification | Preferred where board space permits and automotive qualification is not required |
| ISO6741QDWR | 50 Mbps max, 2500 VRMS, SOIC-16 narrow-body, 10 kV/µs CMTI, AEC-Q100 | Lower data rate limits use in high-speed serial interfaces; higher power consumption at 100 Mbps | Selected when cost sensitivity outweighs need for >50 Mbps performance and tighter skew |
Compared with ADUM140D0BRZ and ISO6741QDWR, the SI8442BB-D-IUR uniquely combines 150 Mbps speed, 0.5 ns typical channel skew, 25 kV/µs CMTI, and AEC-Q100 qualification in a narrow-body SOIC-making it optimal for space-constrained, high-noise, automotive-grade isolated control loops.
Availability
SI8442BB-D-IUR is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle battery management, and isolated switch-mode power supply designs requiring stable component supply and long-term lifecycle support.
Supply support for SI8442BB-D-IUR 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
Silicon Labs is a fabless semiconductor company specializing in precision timing, isolation, and wireless technologies for industrial, automotive, and IoT applications.
The Si84xx family was designed to replace optocouplers with CMOS-based digital isolators offering superior speed, power efficiency, and reliability in harsh electromagnetic environments.
FAQ
What is the maximum data rate supported by the SI8442BB-D-IUR?
The SI8442BB-D-IUR supports a maximum data rate of 150 Mbps, verified across its full operating temperature range (–40 to +125 °C) and supply voltage range (2.70–5.5 V). This rating applies specifically to the 'Bx' variant (e.g., SI8442BB-D-IUR), as confirmed in Tables 3–5 of the Rev. 1.7 datasheet under 5 V and 3.3 V conditions.
Does the SI8442BB-D-IUR require external components for basic operation?
No, the SI8442BB-D-IUR requires only VDD bypass capacitors-no external resistors, transformers, or initialization firmware. Its RF-based architecture eliminates start-up delays, and the device begins passing valid data within 40 µs of power application, as specified in the tSU parameter (Table 3).
Is the SI8442BB-D-IUR pin-compatible with other Si844x variants?
Yes, the SI8442BB-D-IUR shares identical pinout and package (SOIC-16 narrow-body) with all Si8440/41/42/45 family members, including SI8442AB-D-IUR and SI8442BB-D-ISR. Functional differences (e.g., data rate, power) are internal and do not affect PCB layout or interconnect design.
What safety certifications does the SI8442BB-D-IUR hold?
The SI8442BB-D-IUR is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2. These approvals cover reinforced insulation with 560 Vpeak working voltage and are validated for both wide- and narrow-body SOIC packages per the Rev. 1.7 datasheet Section 6.
Can the SI8442BB-D-IUR operate with different supply voltages on each side?
Yes, the SI8442BB-D-IUR supports independent VDD1 and VDD2 supplies ranging from 2.70 V to 5.5 V each. This enables level-shifting between 3.3 V microcontrollers and 5 V analog circuitry, and is explicitly validated in Tables 3–5 for combinations including 3.3 V/5 V and 2.7 V/5 V operation.
SI8442BB-D-IUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 2/2
- 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-QSOP
SI8442BB-D-IUR FAQ
1.How can I place an order for SI8442BB-D-IUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8442BB-D-IUR 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 SI8442BB-D-IUR reliable?
The price and inventory of SI8442BB-D-IUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8442BB-D-IUR is usually 5 days.
3.What payment methods are accepted for SI8442BB-D-IUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8442BB-D-IUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8442BB-D-IUR?
SI8442BB-D-IUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8442BB-D-IUR 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 SI8442BB-D-IUR?
For technical support, including SI8442BB-D-IUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8442BB-D-IUR requirements.
6.How does Aetrix verify that SI8442BB-D-IUR is sourced from the original manufacturer or authorized distributors?
All SI8442BB-D-IUR 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 SI8442BB-D-IUR meets industry standards.
7.What is the process for return or replacement of SI8442BB-D-IUR?
All SI8442BB-D-IUR units undergo pre-shipment inspection (PSI). If there is an issue with SI8442BB-D-IUR, 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 SI8442BB-D-IUR part is unused and in its original packaging.
Return procedure for SI8442BB-D-IUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8442BB-D-IUR Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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