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Skyworks Solutions Inc. SI8441BB-C-ISR
- Part No.:
- SI8441BB-C-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8441BB-C-ISR.pdf
- Description:
- IC DIGITAL ISOLATOR SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,350
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Product details
Overview
SI8441BB-C-ISR from Silicon Labs is a quad-channel digital isolator with reinforced isolation, designed for high-speed signal transmission across galvanic barriers in industrial and automotive systems. It supports up to 150 Mbps data rate, achieves worst-case propagation delay <9.5 ns, operates from 2.70–5.5 V supply, and delivers <8.0 mA per channel at 100 Mbps (5 V), enabling compact isolated communication in motor drives and power inverters.
For engineers reviewing the SI8441BB-C-ISR datasheet, SI8441BB-C-ISR pinout, SI8441BB-C-ISR application, or SI8441BB-C-ISR equivalent, this page provides verified timing specs, SOIC-16 wide-body package details, safety certifications (UL/CSA/VDE), CMTI ≥25 kV/µs, and validated alternatives for legacy design continuity and migration planning.
Technical Context
The SI8441BB-C-ISR implements RF-based on/off keying modulation across a semiconductor isolation barrier-eliminating start-up initialization and delivering stable timing over –40°C to +125°C. Its four independent channels support bidirectional or unidirectional configurations with enable control, and each channel features matched output impedance (~85 Ω) for controlled-impedance PCB routing.
It meets reinforced insulation requirements per IEC 60747-5-2 (VDE 0884-2), UL 1577, and CSA Component Notice 5A, with 2500 VRMS withstand voltage, 560 Vpeak working voltage, and 60-year lifetime at rated stress. Transient immunity is specified at 25 kV/µs common-mode dv/dt.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 150 Mbps - enables high-fidelity serial link isolation for SPI, RS-485, and digital encoder interfaces |
| Propagation Delay | 3.0–9.5 ns - ensures sub-10 ns timing precision critical for real-time motor control loops |
| Channel-Channel Skew | ≤1.8 ns - maintains phase alignment across all four channels for synchronized sampling or PWM gating |
| Common-Mode Transient Immunity | ≥25 kV/µs - suppresses noise coupling in noisy switching environments like inverters and SMPS |
| Isolation Withstand Voltage | 2500 VRMS (1 min) - certified for reinforced insulation in industrial and automotive safety-critical systems |
| Supply Voltage Range | 2.70–5.5 V - supports interoperability with both 3.3 V and 5 V logic domains without level shifters |
| Power Consumption | <8.0 mA per channel @ 100 Mbps (5 V) - reduces thermal load in densely packed isolated gate driver boards |
Pinout & Package
SI8441BB-C-ISR is housed in a 16-pin wide-body SOIC package (WB-SOIC-16) with 8.0 mm creepage/clearance, optimized for reinforced insulation compliance in high-voltage applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 8 | Primary-side VDD1, GND1, inputs, enables | Pins 1–4: Input A1–A4; Pins 5–6: EN1–EN2 (controls channels 1–2 and 3–4); Pins 7–8: VDD1 and GND1 |
| 9, 10, 11, 12, 13, 14, 15, 16 | Secondary-side VDD2, GND2, outputs | Pins 9–12: Output B1–B4; Pins 13–14: EN1–EN2 mirrored; Pins 15–16: VDD2 and GND2 |
Key Features
| Feature | Design Value |
|---|---|
| RF-based isolation architecture | Eliminates optical degradation and startup delays; no external components required beyond VDD bypass capacitors |
| Ultra-low pulse width distortion | ≤2.5 ns (typical) preserves signal integrity for narrow-pulse applications like gate drive timing |
| Matched channel timing | ≤0.5 ns typical channel-to-channel skew enables synchronous multi-channel isolation without deskew compensation |
| AEC-Q100 qualified | Qualified for automotive-grade operation (Grade 1: –40°C to +125°C), supporting HEV/EV subsystems |
| RoHS-compliant wide-body SOIC | Meets IPC/JEDEC J-STD-020 moisture sensitivity level 3; compatible with standard reflow profiles |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
|
Use Scenario: Isolating PWM signals between MCU and gate drivers in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Quad-channel isolator transmitting complementary high-side/low-side gate drive signals with matched propagation delay. Use Value: Enables precise dead-time control via ≤1.8 ns channel skew and <9.5 ns max propagation delay, reducing shoot-through risk. |
Use Scenario: Feedback isolation of secondary-side voltage/current sensing in LLC resonant converters. IC Role / Device Role / Timing Role: Transmitting analog-to-digital converter (ADC) output bits across isolation barrier to primary-side controller. Use Value: 150 Mbps capability supports high-resolution, high-sample-rate isolated ADC interfaces without bottlenecking. |
| Hybrid Electric Vehicle Battery Management | Programmable Logic Controller I/O Modules |
|
Use Scenario: Isolating cell voltage monitoring and balancing commands in high-voltage battery packs (up to 800 V). IC Role / Device Role / Timing Role: Providing reinforced insulation for digital status and command signals between battery monitor ICs and host MCU. Use Value: 2500 VRMS rating and AEC-Q100 qualification ensure long-term reliability under automotive thermal and EMI stress. |
Use Scenario: Digital input/output isolation in modular PLC backplanes handling field-side 24 V DC signals. IC Role / Device Role / Timing Role: Galvanically separating field-side digital I/O lines from internal 3.3 V/5 V logic bus. Use Value: Dual-supply operation (2.7–5.5 V) allows direct interfacing with both field-side and controller-side voltage domains. |
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; uses iCoupler® capacitive isolation; higher typical supply current (10.5 mA @ 100 Mbps) | Same isolation rating and pin count but lacks AEC-Q100 qualification; not recommended for automotive BMS or HEV traction systems | Select when iCoupler® ecosystem compatibility or ADI design support is prioritized over automotive qualification |
| ISO6741QDWR | 4-channel, 50 Mbps, 5 kVRMS, SOIC-16 wide body; uses capacitive isolation; lower speed but higher isolation rating; AEC-Q100 Grade 1 | Lower data rate limits use in high-speed feedback loops; higher 5 kVRMS rating suits ultra-high-voltage industrial systems (>1 kV bus) | Select when system-level isolation voltage >3.5 kVRMS is required and 50 Mbps suffices for control signaling |
Compared with ADUM140D0BRWZ and ISO6741QDWR, SI8441BB-C-ISR uniquely balances 150 Mbps speed, AEC-Q100 qualification, and 2.5 kVRMS reinforced insulation in a single SOIC-16 wide-body package-making it optimal for cost- and space-constrained HEV motor control and industrial servo drives where timing precision and automotive reliability intersect.
Availability
SI8441BB-C-ISR is available at Aetrix Electronics and suitable for industrial motor control, hybrid electric vehicle subsystems, and isolated switch-mode power supplies requiring stable component supply and long-lifecycle support.
Supply support for SI8441BB-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 engineered to replace optocouplers with CMOS-based digital isolators offering superior speed, power efficiency, and lifetime stability-targeting high-reliability isolation in motor drives, power conversion, and automotive electrification.
FAQ
What is the maximum operating temperature for SI8441BB-C-ISR?
The SI8441BB-C-ISR is rated for continuous operation from –40°C to +125°C ambient temperature at full 150 Mbps data rate and 5 V supply. This specification is validated per AEC-Q100 Grade 1 and applies to both SOIC-16 wide-body and narrow-body variants of the Si8441Bx series. Thermal derating curves in the datasheet confirm safe operation up to 125°C case temperature under defined power dissipation limits.
Does SI8441BB-C-ISR require external components for basic operation?
No, SI8441BB-C-ISR requires only VDD bypass capacitors (typically 0.1 µF ceramic per supply rail) for stable operation. Unlike optocouplers or older isolators, it needs no pull-up resistors, level shifters, or initialization firmware-the device begins passing data within 40 µs of power application, with no configuration or calibration required.
What safety certifications apply to SI8441BB-C-ISR?
SI8441BB-C-ISR holds UL 1577 (2500 VRMS, 1 min), CSA Component Notice 5A (IEC 60950-1/61010-1 reinforced insulation), and VDE IEC 60747-5-2 (560 Vpeak working voltage). All certifications apply to the 2.5 kVRMS-rated devices and are production-tested to 3000 VRMS for 1 second per regulatory protocol.
How does the enable function operate on SI8441BB-C-ISR?
SI8441BB-C-ISR has two enable inputs (EN1, EN2) that independently control pairs of channels: EN1 enables channels 1 and 2 (A1→B1, A2→B2), EN2 enables channels 3 and 4 (A3→B3, A4→B4). When an enable pin is low, its associated outputs enter high-impedance state within 9.2 ns (ten2); data becomes valid within 8.0 ns (ten1) after enable goes high.
Is SI8441BB-C-ISR pin-compatible with other Si844x variants?
Yes, SI8441BB-C-ISR shares identical pinout and footprint with all Si8440/41/42/45 family members in the same SOIC-16 wide-body package-including SI8441AB-C-ISR and SI8442BB-C-ISR. However, performance differs: SI8441BB-C-ISR supports 150 Mbps, while SI8441AB-C-ISR is limited to 1 Mbps; functional substitution requires validation of speed, power, and timing requirements.
SI8441BB-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:
- 3/1
- 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
SI8441BB-C-ISR FAQ
1.How can I place an order for SI8441BB-C-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8441BB-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 SI8441BB-C-ISR reliable?
The price and inventory of SI8441BB-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 SI8441BB-C-ISR is usually 5 days.
3.What payment methods are accepted for SI8441BB-C-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8441BB-C-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8441BB-C-ISR?
SI8441BB-C-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8441BB-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 SI8441BB-C-ISR?
For technical support, including SI8441BB-C-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8441BB-C-ISR requirements.
6.How does Aetrix verify that SI8441BB-C-ISR is sourced from the original manufacturer or authorized distributors?
All SI8441BB-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 SI8441BB-C-ISR meets industry standards.
7.What is the process for return or replacement of SI8441BB-C-ISR?
All SI8441BB-C-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8441BB-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 SI8441BB-C-ISR part is unused and in its original packaging.
Return procedure for SI8441BB-C-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8441BB-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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