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Skyworks Solutions Inc. SI8441AB-C-ISR
- Part No.:
- SI8441AB-C-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8441AB-C-ISR.pdf
- Description:
- DIGITAL ISOLATOR 4CH 5.5V 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,572
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Product details
Overview
SI8441AB-C-ISR from Silicon Labs is a quad-channel digital isolator with reinforced isolation, supporting up to 150 Mbps data rate, <9.5 ns worst-case propagation delay, and 2.5 kVRMS withstand voltage in a 16-pin wide-body SOIC package. It operates from 2.70–5.5 V on both sides and delivers ultra-low power consumption: <10 mA per channel at 100 Mbps (5 V), enabling high-speed signal integrity in isolated gate drivers and motor control interfaces.
For engineers reviewing the SI8441AB-C-ISR datasheet, SI8441AB-C-ISR pinout, SI8441AB-C-ISR application, or SI8441AB-C-ISR equivalent, this page provides verified timing specs, safety certifications (UL, CSA, VDE), channel-to-channel skew (≤1.8 ns), and supply current behavior across 2.7 V/3.3 V/5 V operation - critical for industrial inverters, isolated ADCs, and AEC-Q100-compliant HEV systems.
Technical Context
The SI8441AB-C-ISR implements RF-based on/off keying modulation across a semiconductor isolation barrier, eliminating start-up initialization and providing inherent immunity to magnetic fields and EMI. Each of its four unidirectional channels features independent VDD1/VDD2 supplies and supports DC–150 Mbps data transmission without external components beyond VDD bypass capacitors.
It achieves precise timing via matched internal RC oscillators and low-jitter demodulation, delivering 0.5 ns typical channel-channel skew and 1.5 ns pulse width distortion. Safety compliance includes IEC 60747-5-2 (VDE 0884-2), UL 1577 (2500 VRMS), and CSA Component Notice 5A - validated for reinforced insulation up to 560 VPEAK working voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2500 VRMS for 1 minute - enables reinforced insulation in industrial PLCs and EV battery management systems. |
| Max Data Rate | 150 Mbps - supports high-speed SPI, RS-485, and CAN FD isolation without signal degradation. |
| Propagation Delay | 3.0–9.5 ns (typ/max) - ensures sub-10 ns timing predictability for real-time motor control loops. |
| Channel-Channel Skew | ≤1.8 ns (max) - maintains phase alignment across all four channels in synchronized sampling applications. |
| Supply Voltage Range | 2.70–5.5 V on both sides - allows interoperability with 3.3 V microcontrollers and 5 V analog front-ends. |
| CMTI | 25 kV/µs - prevents false triggering in noisy inverter switching environments with fast dV/dt transients. |
| Power @ 100 Mbps | 8.0–19.8 mA per side (5 V) - enables thermal-efficient layout in space-constrained isolated DC-DC controllers. |
Pinout & Package
SI8441AB-C-ISR is housed in a RoHS-compliant 16-pin wide-body SOIC package (package outline per Silicon Labs doc rev. 1.7, page 28), offering 8.0 mm nominal creepage and clearance for reinforced insulation compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Input Channels A1–A4 | Digital logic inputs referenced to VDD1; accept 2.0 V min VIH and 0.8 V max VIL. |
| 5, 6, 7, 8 | VDD1 Power Supply | Primary-side supply (2.70–5.5 V); requires local 0.1 µF bypass capacitor. |
| 9, 10, 11, 12 | Output Channels B1–B4 | Isolated logic outputs referenced to VDD2; drive 4 mA sink/source with VOL ≤ 0.4 V. |
| 13, 14, 15, 16 | VDD2 Power Supply | Secondary-side supply (2.70–5.5 V); independent biasing enables level-shifting between domains. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | Valid output data within 40 µs of power application - eliminates boot-time uncertainty in safety-critical systems. |
| Ultra-low power at high speed | 8.0 mA per side at 100 Mbps / 5 V - reduces heat generation in densely packed motor driver PCBs. |
| Precision timing | 0.5 ns typical channel-channel skew and 1.5 ns pulse width distortion - preserves signal fidelity in multi-channel ADC synchronization. |
| AEC-Q100 qualified | Grade 1 (–40 to +125 °C) qualification - validates reliability for hybrid electric vehicle traction inverter gate drive isolation. |
| Transient immunity | 25 kV/µs common-mode transient immunity - sustains operation during IGBT switching noise in 600 V+ inverters. |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
|
Use Scenario: Isolating PWM signals between MCU and three-phase IGBT gate drivers in variable-frequency drives. IC Role / Device Role / Timing Role: Quad-channel unidirectional isolator transmitting complementary high-side/low-side gate enable signals with matched propagation delay. Use Value: 0.5 ns channel-channel skew ensures simultaneous turn-on/turn-off of half-bridge pairs, minimizing shoot-through risk. |
Use Scenario: Providing feedback isolation for secondary-side voltage sensing in 1 kW LLC resonant converters. IC Role / Device Role / Timing Role: Transmitting isolated analog-to-digital converter outputs across primary-secondary boundary with minimal latency. Use Value: 9.5 ns max propagation delay enables fast-loop response for adaptive regulation under dynamic load steps. |
| Hybrid Electric Vehicle Inverter | Isolated Data Acquisition |
|
Use Scenario: Isolating current-sense amplifier outputs and fault signals in battery-powered traction inverters. IC Role / Device Role / Timing Role: Reinforced-isolation interface between high-voltage DC-link domain and 12 V MCU domain. Use Value: 2500 VRMS rating and AEC-Q100 Grade 1 certification meet automotive functional safety requirements for ASIL-B systems. |
Use Scenario: Isolating serial interface lines (SPI clock/data) between isolated ADCs and host processors in precision test equipment. IC Role / Device Role / Timing Role: High-speed, low-skew digital isolator preserving timing integrity of sampled waveform data streams. Use Value: 150 Mbps capability supports oversampled 24-bit ADCs operating at >1 MSPS effective sample rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRWZ | Quad-channel, 150 Mbps, 2.5 kVRMS, 16-pin SOIC wide-body; uses iCoupler® capacitive isolation; higher CMTI (75 kV/µs). | Superior noise immunity in ultra-high dV/dt environments (e.g., SiC-based inverters); slightly higher quiescent current at 100 Mbps. | Select when CMTI >50 kV/µs is required and layout allows for tighter coupling capacitance constraints. |
| ISO6741QDWR | Quad-channel, 50 Mbps, 5000 VRMS, 16-pin SOIC wide-body; reinforced isolation per VDE 0884-11; lower max data rate. | Higher isolation rating suits medical-grade or grid-tied solar inverters requiring 5 kVRMS; not suitable for 100+ Mbps SPI links. | Select when regulatory compliance mandates >3.75 kVRMS working voltage and bandwidth ≤50 Mbps suffices. |
Compared with ADUM140D0BRWZ and ISO6741QDWR, SI8441AB-C-ISR offers optimal balance of 150 Mbps speed, 2.5 kVRMS isolation, and ultra-low power at 2.7–5.5 V operation - making it ideal for cost-sensitive, thermally constrained industrial motor drives where AEC-Q100 qualification is beneficial but not mandatory.
Availability
SI8441AB-C-ISR is available at Aetrix Electronics and suitable for industrial motor control, isolated switch-mode power supplies, and hybrid electric vehicle inverter designs requiring stable component supply and long-term lifecycle support.
Supply support for SI8441AB-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 to replace optocouplers with CMOS-based digital isolators delivering superior speed, longevity, and temperature stability - specifically targeting high-reliability isolation in motor drives, power conversion, and automotive subsystems.
FAQ
What is the maximum operating temperature for SI8441AB-C-ISR?
The SI8441AB-C-ISR is rated for ambient operation from –40 °C to +125 °C at full 150 Mbps data rate with 15 pF load and 5 V supply. This specification is validated per Table 1 of the official datasheet (Rev. 1.7) and applies to both wide-body and narrow-body SOIC packages under specified thermal conditions.
Does SI8441AB-C-ISR require external components for basic operation?
No. SI8441AB-C-ISR requires only 0.1 µF ceramic bypass capacitors on each VDD1 and VDD2 pin - no pull-up resistors, termination networks, or initialization firmware. Its RF modulation architecture enables immediate data transmission after power-up, with start-up time ≤40 µs as measured per Figure 1 and Table 3.
Is SI8441AB-C-ISR pin-compatible with other Si844x variants?
Yes. SI8441AB-C-ISR shares identical 16-pin wide-body SOIC pinout and supply configuration with all Si8440/41/42/45 family members. However, data rate capability differs: SI8441AB-C-ISR supports 150 Mbps, while SI8441AA-C-ISR is limited to 1 Mbps - confirming pin compatibility but not functional interchangeability without design review.
What safety certifications apply to SI8441AB-C-ISR?
SI8441AB-C-ISR carries UL 1577 (2500 VRMS), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 (VDE 0884-2) certifications. These cover reinforced insulation with 560 VPEAK working voltage and are production-tested to 3.0 kVRMS for 1 second per Table 6 and Table 14 of the datasheet.
How does SI8441AB-C-ISR handle supply voltage mismatch between VDD1 and VDD2?
SI8441AB-C-ISR supports independent 2.70–5.5 V operation on VDD1 and VDD2, enabling true level-shifting. Input thresholds (VIH ≥2.0 V, VIL ≤0.8 V) and output drive (VOH ≥VDD2–0.4 V, VOL ≤0.4 V) remain valid across all combinations, including 3.3 V input → 5 V output or vice versa - confirmed in Tables 3–5 of the datasheet.
SI8441AB-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:
- 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
SI8441AB-C-ISR FAQ
1.How can I place an order for SI8441AB-C-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8441AB-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 SI8441AB-C-ISR reliable?
The price and inventory of SI8441AB-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 SI8441AB-C-ISR is usually 5 days.
3.What payment methods are accepted for SI8441AB-C-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8441AB-C-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8441AB-C-ISR?
SI8441AB-C-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8441AB-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 SI8441AB-C-ISR?
For technical support, including SI8441AB-C-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8441AB-C-ISR requirements.
6.How does Aetrix verify that SI8441AB-C-ISR is sourced from the original manufacturer or authorized distributors?
All SI8441AB-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 SI8441AB-C-ISR meets industry standards.
7.What is the process for return or replacement of SI8441AB-C-ISR?
All SI8441AB-C-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8441AB-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 SI8441AB-C-ISR part is unused and in its original packaging.
Return procedure for SI8441AB-C-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8441AB-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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