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Skyworks Solutions Inc. SI8442BB-D-IS1R
- Part No.:
- SI8442BB-D-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8442BB-D-IS1R.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,019
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Product details
Overview
SI8442BB-D-IS1R from Skyworks Solutions is a quad-channel digital isolator with reinforced 2500 VRMS isolation, supporting up to 150 Mbps data rate and worst-case propagation delay of 9.5 ns. It operates across 2.70–5.5 V supply rails on both sides, delivers ultra-low power consumption (e.g., 11.8 mA per side at 100 Mbps/5 V), and is qualified to AEC-Q100 for automotive-grade reliability in motor control and isolated power supplies.
For engineers reviewing the SI8442BB-D-IS1R datasheet, SI8442BB-D-IS1R pinout, SI8442BB-D-IS1R application, or SI8442BB-D-IS1R equivalent, this page provides verified timing specs, SOIC-16 wide-body package details, safety certifications (UL, CSA, VDE), and real-world design values for high-speed isolated communication in industrial and automotive systems.
Technical Context
The SI8442BB-D-IS1R implements capacitive isolation with differential CMOS signaling, enabling precise timing control across all four channels. Its architecture supports independent enable inputs per channel pair, with guaranteed start-up time ≤40 µs and common-mode transient immunity of 25 kV/µs - critical for noisy motor drive and inverter gate driver interfaces.
It features matched propagation delay skew ≤3.0 ns (P-P) and channel-to-channel skew ≤1.8 ns at 150 Mbps, ensuring deterministic signal alignment in synchronous isolated ADC/DAC clocking and PWM feedback loops. The device maintains stable performance from –40 °C to +125 °C without initialization or calibration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS (1 min), reinforced insulation per UL 1577, CSA 5A, and VDE IEC 60747-5-2 |
| Data Rate | Up to 150 Mbps - enables high-resolution encoder feedback and fast serial interface isolation |
| Propagation Delay | 3.0–9.5 ns - ensures sub-10 ns latency for real-time control loop closure |
| Supply Voltage Range | 2.70–5.5 V on both VDD1 and VDD2 - supports mixed-voltage system interfacing (e.g., 3.3 V MCU to 5 V analog domain) |
| Power Consumption | 11.8 mA per side at 100 Mbps/5 V - reduces thermal load in compact isolated DC-DC controllers |
| Timing Skew | ≤1.8 ns channel-to-channel - preserves phase integrity in multi-phase motor control signals |
| Operating Temperature | –40 to +125 °C at full 150 Mbps - validated for under-hood automotive and industrial ambient conditions |
Pinout & Package
SI8442BB-D-IS1R is housed in a 16-pin wide-body SOIC package (WB SOIC-16) with 8.0 mm creepage and clearance, certified for reinforced insulation. Pin numbering follows standard SOIC layout with pins 1–8 on one side (side 1) and pins 9–16 on the opposite side (side 2).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1, VDD2 | Primary and secondary supply rails | Independent 2.70–5.5 V inputs enabling galvanic separation of logic domains |
| GND1, GND2 | Primary and secondary ground references | Physically isolated grounds prevent ground-loop noise coupling between subsystems |
| IN1–IN4 | Digital input channels | Accept TTL/CMOS logic levels; VIH ≥2.0 V, VIL ≤0.8 V across full voltage range |
| OUT1–OUT4 | Isolated digital output channels | Drive 4 mA loads with VOH ≥VDD–0.4 V and VOL ≤0.4 V - compatible with standard logic families |
| EN1, EN2 | Channel pair enable inputs | Active-high control for low-power mode; outputs go high-impedance when disabled |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power at high speed | 11.8 mA per side at 100 Mbps/5 V - cuts isolation-related power by >40% vs. legacy optocouplers |
| Precision timing alignment | 0.5 ns typical channel-channel skew - enables synchronized sampling across multiple isolated ADCs |
| Robust noise immunity | 25 kV/µs CMTI - sustains reliable operation in high-dv/dt environments like IGBT gate drivers |
| AEC-Q100 qualification | Grade 1 (–40 to +125 °C) - meets automotive functional safety requirements for traction inverters |
| No start-up initialization | Valid data within 40 µs of power-on - eliminates boot-time uncertainty in safety-critical systems |
Applications
| Industrial Motor Control | Automotive Traction Inverter |
|---|---|
|
Use Scenario: Isolating PWM signals and current-sense feedback between MCU and 3-phase IGBT/SiC gate drivers in servo drives. IC Role / Device Role / Timing Role: Quad-channel isolator providing bidirectional signal separation with <9.5 ns propagation delay and <1.8 ns inter-channel skew. Use Value: Enables precise dead-time control and fast fault response (<100 ns loop latency) while meeting IEC 61800-5-1 reinforced insulation requirements. |
Use Scenario: Isolating phase-current sensing and gate-drive signals in EV/HEV main traction inverters. IC Role / Device Role / Timing Role: AEC-Q100 qualified isolator delivering 2500 VRMS isolation and 25 kV/µs CMTI for high-voltage battery domain separation. Use Value: Supports ASIL-B functional safety compliance via predictable timing behavior and long-term reliability (60-year life at rated voltage). |
| Isolated Switch-Mode Power Supply | Isolated Data Acquisition |
|
Use Scenario: Providing feedback isolation for primary-side controller in 1–3 kW isolated DC-DC converters. IC Role / Device Role / Timing Role: High-speed digital isolator transmitting error amplifier output and synchronous rectifier timing across isolation barrier. Use Value: Enables >1 MHz switching frequencies with minimal timing jitter, improving power density and efficiency over optocoupler-based solutions. |
Use Scenario: Isolating SPI or parallel bus signals between isolated ADCs/DACs and host processor in medical or test equipment. IC Role / Device Role / Timing Role: Low-skew quad isolator preserving sample clock integrity and data validity windows across isolation boundary. Use Value: Maintains <6 ns minimum pulse width and <2.5 ns pulse width distortion - critical for accurate 16+ bit data conversion timing. |
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 |
|---|---|---|---|
| ADUM2402BRWZ | 2500 VRMS rating, 25 Mbps max data rate, 25 ns max propagation delay, SOIC-16 wide body | Limited to lower-speed control loops; insufficient for 100+ Mbps encoder or high-res ADC interfaces | Choose when cost sensitivity outweighs speed and timing precision requirements |
| ISO6742QDWR | 5000 VRMS rating, 50 Mbps max data rate, 28 ns max propagation delay, SOIC-16 wide body, AEC-Q100 Grade 0 | Higher isolation but slower timing; not optimized for sub-10 ns real-time control paths | Prefer for ultra-high-voltage systems where 5 kVRMS is mandated, but accept higher latency |
Compared with ADUM2402BRWZ and ISO6742QDWR, the SI8442BB-D-IS1R delivers 3× higher data throughput and ≤1/3 the propagation delay, making it uniquely suitable for time-critical automotive and industrial applications requiring deterministic nanosecond-level synchronization across isolation barriers.
Availability
SI8442BB-D-IS1R is available at Aetrix Electronics and suitable for industrial motor control, automotive traction inverters, isolated switch-mode power supplies, and isolated data acquisition systems requiring stable component supply and long-term lifecycle support.
Supply support for SI8442BB-D-IS1R 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 wireless, automotive, and industrial markets.
The Si84xx family was designed specifically for high-reliability, high-speed digital isolation in safety-critical systems - targeting automotive powertrain, industrial automation, and energy infrastructure applications demanding AEC-Q100 qualification and reinforced insulation.
FAQ
What is the maximum operating temperature for SI8442BB-D-IS1R at full 150 Mbps data rate?
The SI8442BB-D-IS1R is fully specified for operation from –40 °C to +125 °C at 150 Mbps, with supply voltages of 2.70–5.5 V on both sides. This rating is validated per AEC-Q100 Grade 1 and applies to both wide-body SOIC packages under worst-case loading conditions, ensuring reliability in under-hood automotive and high-ambient industrial environments. SI8442BB-D-IS1R maintains timing and isolation integrity across this full range without derating.
Does SI8442BB-D-IS1R require external components for basic operation?
No, SI8442BB-D-IS1R requires only VDD bypass capacitors (typically 0.1 µF ceramic per supply rail) for stable operation - no pull-up/pull-down resistors, termination networks, or initialization firmware are needed. Its self-contained architecture eliminates external timing components, reducing BOM count and PCB area versus optocoupler or transformer-based isolation. SI8442BB-D-IS1R achieves this while maintaining 2500 VRMS isolation and 150 Mbps capability.
How does the enable functionality work on SI8442BB-D-IS1R?
SI8442BB-D-IS1R features two independent enable inputs (EN1 and EN2), each controlling a pair of channels (IN1/OUT1/IN2/OUT2 for EN1; IN3/OUT3/IN4/OUT4 for EN2). When an enable pin is low, its associated outputs enter high-impedance state with ≤2.0 µA leakage. Enable-to-data-valid delay is 5.0–8.0 ns, enabling fast power-gating in dynamic systems. SI8442BB-D-IS1R supports seamless integration into low-power wake/sleep protocols without signal corruption.
What safety certifications apply to SI8442BB-D-IS1R?
SI8442BB-D-IS1R is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 (reinforced insulation). These cover working voltage ratings up to 600 VRMS (CSA), 560 Vpeak (VDE), and 2500 VRMS (UL), with production-tested withstand voltage of 3000 VRMS for 1 second. SI8442BB-D-IS1R meets all regulatory requirements for reinforced insulation in industrial and automotive end-equipment.
Can SI8442BB-D-IS1R operate with mismatched supply voltages on VDD1 and VDD2?
Yes, SI8442BB-D-IS1R supports independent 2.70–5.5 V supplies on VDD1 and VDD2, enabling true level-shifting isolation (e.g., 3.3 V MCU side to 5 V analog side). Input thresholds (VIH ≥2.0 V, VIL ≤0.8 V) and output drive strength (VOH ≥VDD–0.4 V) are maintained across the full voltage range on each side. SI8442BB-D-IS1R's dual-rail flexibility simplifies interface design in heterogeneous voltage-domain systems without external level translators.
SI8442BB-D-IS1R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm 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-D-IS1R FAQ
1.How can I place an order for SI8442BB-D-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8442BB-D-IS1R 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-IS1R reliable?
The price and inventory of SI8442BB-D-IS1R 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-IS1R is usually 5 days.
3.What payment methods are accepted for SI8442BB-D-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8442BB-D-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8442BB-D-IS1R?
SI8442BB-D-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8442BB-D-IS1R 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-IS1R?
For technical support, including SI8442BB-D-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8442BB-D-IS1R requirements.
6.How does Aetrix verify that SI8442BB-D-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8442BB-D-IS1R 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-IS1R meets industry standards.
7.What is the process for return or replacement of SI8442BB-D-IS1R?
All SI8442BB-D-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8442BB-D-IS1R, 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-IS1R part is unused and in its original packaging.
Return procedure for SI8442BB-D-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8442BB-D-IS1R Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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