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Skyworks Solutions Inc. SI8442AB-C-IS1
- Part No.:
- SI8442AB-C-IS1
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8442AB-C-IS1.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,224
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Product details
Overview
SI8442AB-C-IS1 from Skyworks Solutions is a quad-channel digital isolator with reinforced isolation rated at 2500 VRMS, 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 (11.8 mA per side at 100 Mbps, 5 V), and is qualified to AEC-Q100 for automotive use in motor control and isolated power supplies.
For engineers reviewing the SI8442AB-C-IS1 datasheet, SI8442AB-C-IS1 pinout, SI8442AB-C-IS1 application, or SI8442AB-C-IS1 equivalent, key selection criteria include its 150 Mbps capability, 0.5 ns typical channel-to-channel skew, 25 kV/µs CMTI, and SOIC-16 wide-body package with 8.0 mm creepage/clearance - critical for high-noise industrial and automotive isolation interfaces.
Technical Context
The SI8442AB-C-IS1 implements capacitive isolation using differential RF signaling across an integrated SiO₂ barrier, enabling precise timing and high noise immunity without magnetic or optical components. Its architecture supports independent dual-supply operation (VDD1/VDD2), bidirectional data channels, and an active-low enable input that places outputs in high-impedance state when deasserted.
It features deterministic timing behavior across –40°C to +125°C at full 150 Mbps, with pulse width distortion ≤2.5 ns and propagation delay skew ≤3.0 ns (P-P). The device meets IEC 60747-5-2 (VDE 0884-2), UL 1577, and CSA Component Notice 5A safety standards for reinforced insulation up to 560 VPEAK working voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS (1 min), production-tested to 3000 VRMS - enables reinforced insulation in industrial and automotive safety-critical circuits |
| Max Data Rate | 150 Mbps - supports high-speed serial interfaces including SPI, RS-485, and CAN FD physical layer isolation |
| Propagation Delay | 3.0–9.5 ns - ensures sub-10 ns timing predictability for real-time control loops and ADC sampling synchronization |
| Channel-Channel Skew | 0.5–1.8 ns - maintains phase alignment across all four channels for parallel bus isolation (e.g., isolated GPIO or PWM) |
| CMTI | ≥25 kV/µs - rejects fast common-mode transients in motor drives and inverters without signal corruption |
| Supply Voltage Range | 2.70–5.5 V on both sides - interoperates with 3.3 V microcontrollers and 5 V legacy logic without level shifters |
| Operating Temperature | –40°C to +125°C - validated for under-hood automotive and industrial ambient conditions at full speed |
Pinout & Package
SI8442AB-C-IS1 is housed in a 16-pin wide-body SOIC package (WB-SOIC-16) with 8.0 mm minimum creepage and clearance, compliant with IEC 60664-1 for reinforced insulation at up to 600 VRMS working voltage.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Primary-side input channels (IN1–IN4) | Digital inputs referenced to VDD1; accept 2.0 V min VIH and 0.8 V max VIL for 3.3 V/5 V logic compatibility |
| 5, 6, 7, 8 | Primary-side ground (GND1) | Return path for VDD1 domain; must be separated from GND2 by ≥8 mm PCB isolation gap |
| 9, 10, 11, 12 | Secondary-side output channels (OUT1–OUT4) | CMOS-compatible outputs with VOH ≥ VDD2–0.4 V and VOL ≤ 0.4 V; drive 15 pF loads at 150 Mbps |
| 13, 14, 15, 16 | Secondary-side ground (GND2) | Return path for VDD2 domain; galvanically isolated from GND1; forms isolation barrier boundary |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel isolation | Four independent, unidirectional data paths in one SOIC-16 package - reduces board space vs. discrete optocouplers or dual isolators |
| Enable-controlled tri-state | Active-low EN pin disables all outputs to high-Z state within 9.2 ns - enables shared-bus arbitration and low-power sleep modes |
| Ultra-low power at speed | 11.8 mA per side at 100 Mbps / 5 V - cuts thermal load in dense power-conversion control boards |
| High reliability lifetime | 60-year operational life at rated working voltage - validated per IEC 60747-5-2 for long-lifecycle industrial deployments |
| AEC-Q100 qualification | Grade 1 (–40°C to +125°C) qualification - supports automotive applications including battery management and traction inverter control |
Applications
| Industrial Motor Control | Automotive Battery Management |
|---|---|
Use Scenario: Isolating gate driver signals and current-sense feedback in 3-phase inverter stages of servo drives and HVAC compressors. IC Role / Device Role / Timing Role: Quad-channel isolator providing independent PWM channel isolation and analog feedback isolation with <10 ns delay matching. Use Value: Enables precise dead-time control and prevents shoot-through faults via sub-10 ns propagation delay and 0.5 ns channel skew. | Use Scenario: Isolating cell voltage monitoring and pack-level communication between BMS controller and high-voltage battery stack. IC Role / Device Role / Timing Role: Reinforced-isolation interface for SPI-based ADC reads and isolated UART/CAN transceiver control lines. Use Value: Meets IEC 61000-4-5 surge immunity and AEC-Q100 Grade 1 requirements while supporting 150 Mbps for fast cell balancing coordination. |
| Isolated Switch-Mode Power Supply | Programmable Logic Controller I/O |
Use Scenario: Providing feedback isolation for secondary-side voltage regulation and primary-side gate drive in LLC resonant converters. IC Role / Device Role / Timing Role: Dual-channel configuration (IN1/OUT1, IN2/OUT2) for isolated error amplifier output and synchronous rectifier control. Use Value: Eliminates optocoupler aging and temperature drift; 25 kV/µs CMTI ensures stable regulation during EFT bursts. | Use Scenario: Digitally isolating 24 V DC input/output modules in PLC backplanes where field-side noise exceeds 2 kV ESD and 4 kV EFT. IC Role / Device Role / Timing Role: Four-channel isolator handling discrete input sensing, output actuation, and diagnostic status reporting simultaneously. Use Value: SOIC-16 wide-body layout provides 8.0 mm creepage - satisfies IEC 61000-6-2 and IEC 61000-6-4 immunity requirements without additional spacing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRWZ | 4-channel, 150 Mbps, 2.5 kVRMS, SOIC-16 wide-body; higher 13.5 mA supply current at 100 Mbps (5 V) | Same reinforced insulation rating but lacks AEC-Q100 qualification; lower CMTI (100 kV/µs) | Preferred for non-automotive high-CMTI applications where lower propagation delay skew (<0.3 ns) is critical |
| ISO6741QDWR | 4-channel, 50 Mbps, 5 kVRMS, SOIC-16 wide-body; 3.3/5 V dual supply; AEC-Q100 Grade 0 (–40°C to +150°C) | Higher isolation rating but limited to 50 Mbps; wider temp range but higher 15.2 mA supply current at 10 Mbps | Selected when >3.75 kVRMS working voltage or extended temperature operation beyond +125°C is required |
Compared with ADUM140D0BRWZ and ISO6741QDWR, the SI8442AB-C-IS1 offers optimal balance of 150 Mbps speed, AEC-Q100 Grade 1 qualification, and 25 kV/µs CMTI in a cost-effective wide-body SOIC - making it ideal for automotive motor control and industrial inverters where timing precision and noise immunity are co-prioritized.
Availability
SI8442AB-C-IS1 is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management systems, and isolated switch-mode power supplies requiring stable component supply and long-term lifecycle support.
Supply support for SI8442AB-C-IS1 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 specifically for high-reliability, high-speed digital isolation in automotive, industrial, and energy infrastructure applications - emphasizing low power, precise timing, and regulatory-compliant reinforced insulation.
FAQ
What is the maximum operating temperature for SI8442AB-C-IS1 at full 150 Mbps data rate?
The SI8442AB-C-IS1 is fully specified for operation from –40°C to +125°C at 150 Mbps with 5 V supplies and 15 pF load, as confirmed in Tables 3 and 4 of the datasheet. This rating applies to both wide-body and narrow-body SOIC packages and is validated per AEC-Q100 Grade 1 requirements.
Does SI8442AB-C-IS1 support bidirectional data transmission on each channel?
No, SI8442AB-C-IS1 provides four unidirectional channels: pins 1–4 are inputs on the primary side (VDD1 domain), and pins 9–12 are outputs on the secondary side (VDD2 domain). Bidirectional operation requires external logic or pairing with complementary isolators like SI8441AB-C-IS1.
What safety certifications apply to SI8442AB-C-IS1 and what working voltages do they support?
SI8442AB-C-IS1 is certified to UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2. These support up to 600 VRMS reinforced insulation working voltage (UL/CSA) and 560 VPEAK basic insulation (VDE), as detailed in Tables 6 and 7.
How does the enable (EN) pin function on SI8442AB-C-IS1?
The EN pin (pin 8) is active-low and controls output tri-state behavior: when pulled low, all four outputs (pins 9–12) enter high-impedance state within 9.2 ns (ten2); when high, outputs reflect input states with 8.0 ns max enable-to-valid delay (ten1), per Figure 1 and Table 3.
Is SI8442AB-C-IS1 pin-compatible with other members of the Si844x family?
Yes, SI8442AB-C-IS1 shares identical pinout and package (SOIC-16 wide-body) with all Si8440/41/42/45 variants. However, data rate capability differs: SI8442AB-C-IS1 supports 150 Mbps, while SI8442AA-C-IS1 is limited to 1 Mbps - electrical and mechanical compatibility does not imply functional interchangeability.
SI8442AB-C-IS1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 35ns, 35ns
- Pulse Width Distortion (Max):
- 25ns
- 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
SI8442AB-C-IS1 FAQ
1.How can I place an order for SI8442AB-C-IS1 through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8442AB-C-IS1 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 SI8442AB-C-IS1 reliable?
The price and inventory of SI8442AB-C-IS1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8442AB-C-IS1 is usually 5 days.
3.What payment methods are accepted for SI8442AB-C-IS1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8442AB-C-IS1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8442AB-C-IS1?
SI8442AB-C-IS1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8442AB-C-IS1 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 SI8442AB-C-IS1?
For technical support, including SI8442AB-C-IS1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8442AB-C-IS1 requirements.
6.How does Aetrix verify that SI8442AB-C-IS1 is sourced from the original manufacturer or authorized distributors?
All SI8442AB-C-IS1 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 SI8442AB-C-IS1 meets industry standards.
7.What is the process for return or replacement of SI8442AB-C-IS1?
All SI8442AB-C-IS1 units undergo pre-shipment inspection (PSI). If there is an issue with SI8442AB-C-IS1, 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 SI8442AB-C-IS1 part is unused and in its original packaging.
Return procedure for SI8442AB-C-IS1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8442AB-C-IS1 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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