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Skyworks Solutions Inc. SI8442BB-C-ISR
- Part No.:
- SI8442BB-C-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8442BB-C-ISR.pdf
- Description:
- IC DIGITAL ISOLATOR SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,482
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Product details
Overview
SI8442BB-C-ISR 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, <9.5 ns worst-case propagation delay, and operation from 2.70–5.5 V across –40 to +125 °C - deployed in isolated ADC interfaces and motor control gate drivers.
For engineers reviewing the SI8442BB-C-ISR datasheet, SI8442BB-C-ISR pinout, SI8442BB-C-ISR application, or SI8442BB-C-ISR equivalent, this page delivers verified timing specs, SOIC-16 narrow-body package details, safety certification evidence (UL/CSA/VDE), and real-world substitution guidance for industrial and automotive signal isolation design.
Technical Context
The SI8442BB-C-ISR implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating startup initialization and enabling deterministic timing without PLL lock or calibration. Each of its four independent channels operates bidirectionally with matched input/output logic thresholds (VIH = 2.0 V, VIL = 0.8 V) and 85 Ω nominal output impedance.
It supports dual supply domains (VDD1/VDD2), delivers 25 kV/µs common-mode transient immunity, and maintains stable propagation delay skew (<3.0 ns P-P) and channel-to-channel skew (<1.8 ns) across temperature and voltage - critical for synchronous sampling in isolated power converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS reinforced insulation (UL 1577, CSA 5A, VDE 0884-2), production-tested to 3000 VRMS for 1 sec |
| Data Rate | Up to 150 Mbps - enables high-resolution encoder feedback and fast SPI isolation in servo drives |
| Propagation Delay | 3.0–9.5 ns (typ/max) - ensures sub-10 ns timing budget compliance for 100+ MHz clock domain crossing |
| Supply Voltage Range | 2.70–5.5 V per side - interoperable with 3.3 V microcontrollers and 5 V analog front-ends without level shifters |
| Power Consumption | 11.8 mA per side at 100 Mbps / 5 V - reduces thermal load in densely packed IGBT gate driver PCBs |
| Timing Precision | 1.5 ns pulse width distortion, 0.5 ns channel-channel skew - preserves duty cycle integrity for PWM signal isolation |
| Operating Temperature | –40 to +125 °C at full 150 Mbps - qualified for under-hood automotive and industrial motor control environments |
Pinout & Package
SI8442BB-C-ISR is housed in a RoHS-compliant 16-pin narrow-body SOIC package (5.3 mm width, 10.3 mm length), optimized for space-constrained isolated DC-DC controllers and gate driver boards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Primary-side inputs (INA1–INA4) | Digital logic inputs referenced to VDD1; accept 2.0–5.5 V high-level signals |
| 5, 6, 7, 8 | Primary-side outputs (OUTA1–OUTA4) | CMOS outputs driven from VDD1; 85 Ω impedance for controlled-impedance trace routing |
| 9, 10, 11, 12 | Secondary-side outputs (OUTB1–OUTB4) | Isolated CMOS outputs referenced to VDD2; match primary-side timing within 1.8 ns skew |
| 13, 14, 15, 16 | Secondary-side inputs (INB1–INB4) | Isolated logic inputs referenced to VDD2; enable bidirectional communication across barrier |
| 17 (NC) | No connect | Not bonded; must remain unconnected per datasheet revision C/D layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates startup delay and optical aging; achieves stable timing over 60-year life at rated voltage |
| 25 kV/µs CMTI | Prevents data corruption during fast-switching transients in SiC/GaN inverter half-bridges |
| Enable-controlled tri-state outputs | ten2 = 7–9.2 ns enables synchronized bus release during system reset or fault shutdown |
| AEC-Q100 qualified | Validated for automotive applications including battery management and traction inverter control |
| Low EMI emission | Meets CISPR-22 Class B radiated emissions without external shielding or ferrites |
Applications
| Motor Control Gate Driver | Isolated ADC Interface |
|---|---|
|
Use Scenario: Isolating PWM signals between MCU and high-side IGBT gate drivers in 3-phase inverters. IC Role / Device Role / Timing Role: Quad-channel isolator transmitting complementary PWM pairs with <1.8 ns inter-channel skew to prevent shoot-through. Use Value: Enables precise dead-time control at 20+ kHz switching frequencies while maintaining 2500 VRMS working voltage clearance. |
Use Scenario: Transmitting serial data from isolated delta-sigma ADCs (e.g., AMC1306) to host processors. IC Role / Device Role / Timing Role: Bidirectional isolator carrying SCLK, DIN, DOUT, and CS signals across reinforced barrier at 20 MSPS. Use Value: Preserves 16-bit resolution integrity via <2.5 ns pulse width distortion and 25 kV/µs noise rejection. |
| Industrial PLC Digital I/O | Hybrid Electric Vehicle Battery Monitor |
|
Use Scenario: Galvanically isolating 24 V DC field inputs and relay outputs in programmable logic controllers. IC Role / Device Role / Timing Role: Four independent channels handling discrete input sensing and output actuation with <9.5 ns latency. Use Value: Supports 1 ms scan cycle times while meeting IEC 61000-4-5 surge immunity requirements via 2500 VRMS rating. |
Use Scenario: Isolating cell voltage measurement data and balancing commands between battery pack and BMS controller. IC Role / Device Role / Timing Role: Reinforced isolator linking isolated ADCs and MOSFET drivers in 400–800 V battery stacks. Use Value: Certified to AEC-Q100 Grade 0 (–40 to +125 °C) and VDE 0884-2 for functional safety in ASIL-C systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRZ | 4-channel, 150 Mbps, 2500 VRMS, but uses iCoupler capacitive isolation; higher 13.5 mA supply current at 100 Mbps/5 V | Lacks AEC-Q100 qualification; not certified to VDE 0884-2 for reinforced insulation | Preferred where legacy Analog Devices ecosystem integration is required and automotive qualification is not mandated |
| ISO6741QDWRQ1 | 4-channel, 50 Mbps max, 5000 VRMS, TI's capacitive isolation; lower 7.5 mA supply current at 100 Mbps/3.3 V | Higher isolation rating but halved data rate limits use in high-speed encoder interfaces | Selected when >3.75 kVRMS working voltage is required and 150 Mbps bandwidth is unnecessary |
Compared with ADUM140D0BRZ and ISO6741QDWRQ1, the SI8442BB-C-ISR uniquely balances 150 Mbps speed, AEC-Q100 qualification, and VDE-reinforced 2500 VRMS rating - making it optimal for automotive inverter control and industrial servo drives requiring both speed and safety certification.
Availability
SI8442BB-C-ISR is available at Aetrix Electronics and suitable for industrial automation systems, hybrid electric vehicle powertrain modules, and isolated switch mode supplies requiring stable component supply and long-term lifecycle support.
Supply support for SI8442BB-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
Silicon Labs is a fabless semiconductor company specializing in secure, intelligent wireless and wired connectivity solutions for IoT, industrial, and automotive markets.
The Si84xx family was designed specifically for high-reliability signal isolation in harsh environments - delivering RF-based timing precision, safety-certified reinforcement, and ultra-low power consumption for next-generation power electronics.
FAQ
What is the maximum data rate supported by SI8442BB-C-ISR?
The SI8442BB-C-ISR supports a maximum data rate of 150 Mbps, validated across its full operating temperature range (–40 to +125 °C) and supply voltage range (2.70–5.5 V). This performance is specified for the 'Bx' variant in the Si844x family and confirmed in Tables 3–5 of the Rev. 1.7 datasheet under 5 V and 3.3 V conditions.
Does SI8442BB-C-ISR require startup initialization?
No, SI8442BB-C-ISR requires no startup initialization. Its RF-based on/off keying architecture provides immediate valid data output after power-on, with a guaranteed start-up time of ≤40 µs. This eliminates boot-time delays in safety-critical motor control and power supply sequencing.
What safety certifications apply to SI8442BB-C-ISR?
SI8442BB-C-ISR holds UL 1577 recognition (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE 0884-2 certification (IEC 60747-5-2). All certifications apply to its 2.5 kVRMS isolation rating, with production units tested to 3000 VRMS for 1 second per regulatory requirements.
What is the package type and pin count of SI8442BB-C-ISR?
SI8442BB-C-ISR uses a 16-pin narrow-body SOIC package (5.3 mm width), as documented in Section 8 and Figure 30 of the Rev. 1.7 datasheet. It is distinct from the wide-body variant (8.5 mm width) and shares pinout compatibility with other Si844x 'B' variants in the same package footprint.
Is SI8442BB-C-ISR suitable for automotive applications?
Yes, SI8442BB-C-ISR is AEC-Q100 qualified (Grade 0: –40 to +125 °C) and certified to VDE 0884-2 for reinforced insulation - making it suitable for automotive applications including battery management systems, on-board chargers, and traction inverter control where functional safety and high-temperature reliability are required.
SI8442BB-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:
- 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-SOIC
SI8442BB-C-ISR FAQ
1.How can I place an order for SI8442BB-C-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8442BB-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 SI8442BB-C-ISR reliable?
The price and inventory of SI8442BB-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 SI8442BB-C-ISR is usually 5 days.
3.What payment methods are accepted for SI8442BB-C-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8442BB-C-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8442BB-C-ISR?
SI8442BB-C-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8442BB-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 SI8442BB-C-ISR?
For technical support, including SI8442BB-C-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8442BB-C-ISR requirements.
6.How does Aetrix verify that SI8442BB-C-ISR is sourced from the original manufacturer or authorized distributors?
All SI8442BB-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 SI8442BB-C-ISR meets industry standards.
7.What is the process for return or replacement of SI8442BB-C-ISR?
All SI8442BB-C-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8442BB-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 SI8442BB-C-ISR part is unused and in its original packaging.
Return procedure for SI8442BB-C-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8442BB-C-ISR 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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