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Skyworks Solutions Inc. SI8441BB-D-ISR
- Part No.:
- SI8441BB-D-ISR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
SI8441BB-D-ISR.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,870
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Product details
Overview
SI8441BB-D-ISR from Skyworks Solutions is a quad-channel digital isolator with reinforced 2500 VRMS isolation, rated for 150 Mbps data rate and –40 to 125 °C operation. It features worst-case propagation delay <9.5 ns, channel-to-channel skew ≤1.8 ns, and ultra-low power consumption (≤10 mA per channel at 100 Mbps, 5 V). It serves as a high-reliability signal isolator in isolated gate drivers and industrial I/O interfaces.
For engineers reviewing the SI8441BB-D-ISR datasheet, SI8441BB-D-ISR pinout, SI8441BB-D-ISR application, or SI8441BB-D-ISR equivalent, this page delivers verified timing specs, SOIC-16 wide-body package details, safety certifications (UL, CSA, VDE), and validated alternative options for industrial and automotive isolation designs.
Technical Context
The SI8441BB-D-ISR implements capacitive isolation with on-chip RF modulation/demodulation across four independent channels. Each channel supports bidirectional or unidirectional data flow without start-up initialization and operates across dual 2.70–5.5 V supplies (VDD1/VDD2) with independent voltage domains.
It achieves 25 kV/µs common-mode transient immunity (CMTI) and meets IEC 60747-5-2 (VDE 0884-2), UL 1577, and CSA Component Notice 5A requirements. Its 85 Ω nominal output impedance enables controlled-impedance PCB routing for high-speed signals up to 150 Mbps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 150 Mbps - supports high-speed serial interfaces like SPI, RS-485, and isolated ADC/DAC links without timing bottlenecks. |
| Propagation Delay | 3.0–9.5 ns (typ/max) - ensures sub-10 ns deterministic latency critical for real-time motor control and power converter feedback loops. |
| Channel-Channel Skew | ≤1.8 ns (max) - guarantees tight synchronization across all four isolated channels for multi-signal acquisition or PWM distribution. |
| Isolation Voltage | 2500 VRMS (1 min) - provides reinforced insulation compliant with IEC 61010-1 and UL 1577 for industrial and EV auxiliary systems. |
| Supply Range | 2.70–5.5 V per side - allows interoperability with 3.3 V microcontrollers and 5 V legacy logic while maintaining full performance. |
| CMTI | ≥25 kV/µs - rejects fast transients in noisy environments such as motor drives and switch-mode power supplies. |
| Operating Temperature | –40 to 125 °C - qualified for under-hood automotive and industrial ambient conditions at full 150 Mbps data rate. |
Pinout & Package
SI8441BB-D-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. Pin numbering follows standard SOIC convention (pin 1 = top-left corner, notch indicator).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Primary-side supply | Power for input-side logic and channel 1–2 transmitters; must be decoupled with ≥0.1 µF ceramic capacitor near pin. |
| GND1 | Primary-side ground | Reference for input-side signals and VDD1; requires low-impedance connection to primary ground plane. |
| IN1, IN2 | Input channels 1–2 | Digital inputs referenced to GND1; accept 2.0 V min VIH and 0.8 V max VIL across full temperature range. |
| OUT1, OUT2 | Output channels 1–2 | Isolated outputs referenced to GND2; drive loads up to 4 mA with VOH ≥ VDD2 – 0.4 V and VOL ≤ 0.4 V. |
| VDD2 | Secondary-side supply | Power for output-side logic and channel 1–2 receivers; independent of VDD1, enabling level-shifting applications. |
| GND2 | Secondary-side ground | Reference for output-side signals and VDD2; galvanically isolated from GND1 by internal capacitive barrier. |
| IN3, IN4 | Input channels 3–4 | Additional isolated inputs on primary side; functionally identical to IN1/IN2 with same voltage thresholds. |
| OUT3, OUT4 | Output channels 3–4 | Additional isolated outputs on secondary side; match OUT1/OUT2 electrical specs and timing behavior. |
| EN | Enable control | Active-high enable pin; when low, forces all outputs into high-impedance state - used for bus sharing or power sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| No start-up initialization | Outputs become valid within 40 µs of power application - eliminates boot-time delays in safety-critical systems. |
| Ultra-low power at 100 Mbps | ≤10 mA per channel at 5 V - reduces thermal load and enables dense integration in space-constrained industrial modules. |
| Pulse width distortion | ≤2.5 ns (typ) - preserves signal integrity for narrow pulses in gate driver timing and encoder interfaces. |
| AEC-Q100 qualification | Grade 1 (–40 to 125 °C) - validates suitability for automotive subsystems including battery management and traction inverter control. |
| RoHS-compliant wide-body SOIC | 16-pin WB-SOIC with 8.0 mm creepage - satisfies reinforced insulation requirements for mains-connected equipment per IEC 61010-1. |
Applications
| Industrial Motor Control | Isolated Power Supply Feedback |
|---|---|
Use Scenario: Isolating PWM signals and fault reporting between MCU and three-phase inverter gate drivers in servo drives. IC Role / Device Role / Timing Role: Quad-channel isolator transmitting gate enable, dead-time control, and overcurrent status with <10 ns channel skew. Use Value: Enables precise synchronized switching across all six IGBTs while blocking ground-loop noise and HV transients up to 2500 VRMS. |
Use Scenario: Transmitting error amplifier output from secondary-side TL431 to primary-side PWM controller in isolated DC-DC converters. IC Role / Device Role / Timing Role: Unidirectional isolator carrying analog-derived digital feedback with <9.5 ns propagation delay and 25 kV/µs CMTI. Use Value: Maintains loop stability under fast load transients by preserving feedback timing integrity and rejecting common-mode noise from transformer leakage. |
| Automotive Battery Management | Isolated Data Acquisition |
Use Scenario: Isolating cell voltage measurement data and balancing commands between BMS controller and high-voltage battery stack monitoring ICs. IC Role / Device Role / Timing Role: Four independent channels conveying 12-bit ADC results and MOSFET gate signals across 400 V potential difference. Use Value: Meets AEC-Q100 Grade 1 and reinforced insulation requirements while supporting 150 Mbps burst reads for fast SOC estimation. |
Use Scenario: Isolating multiple sensor inputs (temperature, current, voltage) from analog front-end to host MCU in programmable logic controllers. IC Role / Device Role / Timing Role: Simultaneous isolation of four differential or single-ended digital sensor streams with matched propagation delay. Use Value: Eliminates measurement errors caused by ground potential differences across distributed I/O modules in factory automation systems. |
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 |
|---|---|---|---|
| ADUM4401BRWZ | 5000 VRMS isolation rating; 25 Mbps max data rate; 16-pin SOIC wide-body; higher quiescent current (1.2 mA/ch @ 0 Mbps). | Better suited for high-isolation safety barriers (e.g., medical equipment), but insufficient for 150 Mbps SPI or fast encoder interfaces. | Select when >3000 VRMS working voltage is mandated and speed requirements are ≤25 Mbps. |
| ISO6741QDWR | 5000 VRMS; 50 Mbps max; AEC-Q100 qualified; 16-pin SOIC wide-body; integrated 3.3 V LDO on secondary side. | Provides regulated secondary supply but lacks 150 Mbps capability - limits use in high-resolution isolated ADC sampling or fast serial comms. | Choose when system-level power simplification (integrated LDO) outweighs need for >50 Mbps throughput. |
Compared with ADUM4401BRWZ and ISO6741QDWR, SI8441BB-D-ISR uniquely balances 150 Mbps speed, 2500 VRMS isolation, AEC-Q100 qualification, and ultra-low dynamic power-making it optimal for next-generation EV inverters and high-bandwidth industrial PLCs where timing precision and thermal efficiency are co-constrained.
Availability
SI8441BB-D-ISR is available at Aetrix Electronics and suitable for industrial motor control, automotive battery management, and isolated power supply feedback requiring stable component supply and long-term lifecycle support.
Supply support for SI8441BB-D-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
Skyworks Solutions is a global semiconductor company specializing in analog and mixed-signal connectivity solutions for wireless, automotive, and industrial markets.
The Si84xx family was designed to replace optocouplers with higher speed, lower power, and superior reliability in high-noise, high-isolation applications such as EV traction inverters and industrial automation.
FAQ
What is the maximum data rate supported by SI8441BB-D-ISR?
The SI8441BB-D-ISR supports a maximum data rate of 150 Mbps under specified operating conditions (VDD = 5 V, TA = –40 to 125 °C). This is confirmed in Table 3 timing characteristics for Si844xBx variants, where "Maximum Data Rate" is listed as 0–150 Mbps. SI8441BB-D-ISR belongs to the "Bx" speed grade, distinguishing it from the 1 Mbps "Ax" variants in the same family.
Does SI8441BB-D-ISR require external components for basic operation?
No external components beyond VDD bypass capacitors are required for SI8441BB-D-ISR operation. The datasheet explicitly states "only VDD bypass capacitors are required" and confirms no start-up initialization is needed. A minimum 0.1 µF ceramic capacitor per VDD pin (VDD1 and VDD2) placed close to the device is sufficient for stable high-speed operation.
Is SI8441BB-D-ISR certified for automotive applications?
Yes, SI8441BB-D-ISR is AEC-Q100 qualified (Grade 1, –40 to 125 °C) and carries UL, CSA, and VDE safety certifications applicable to automotive subsystems. Its 2500 VRMS isolation and 25 kV/µs CMTI meet requirements for battery monitoring, inverter control, and onboard charger interfaces in hybrid and electric vehicles.
What package type does SI8441BB-D-ISR use?
SI8441BB-D-ISR uses a 16-pin wide-body SOIC (WB-SOIC-16) package with 8.0 mm creepage and clearance, as documented in Section 6 ("Package Outline: 16-Pin Wide Body SOIC") and Table 7. This package satisfies reinforced insulation requirements per IEC 61010-1 and UL 1577 for industrial and automotive end-equipment.
How does the EN pin function on SI8441BB-D-ISR?
The EN (enable) pin on SI8441BB-D-ISR is an active-high control that places all four output channels into high-impedance state when driven low. As shown in Figure 1 and Table 3, enable-to-data-valid delay is ≤8.0 ns, and enable-to-tri-state delay is ≤9.2 ns - enabling fast bus arbitration and power sequencing in multi-master systems.
SI8441BB-D-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-D-ISR FAQ
1.How can I place an order for SI8441BB-D-ISR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8441BB-D-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-D-ISR reliable?
The price and inventory of SI8441BB-D-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-D-ISR is usually 5 days.
3.What payment methods are accepted for SI8441BB-D-ISR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8441BB-D-ISR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8441BB-D-ISR?
SI8441BB-D-ISR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8441BB-D-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-D-ISR?
For technical support, including SI8441BB-D-ISR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8441BB-D-ISR requirements.
6.How does Aetrix verify that SI8441BB-D-ISR is sourced from the original manufacturer or authorized distributors?
All SI8441BB-D-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-D-ISR meets industry standards.
7.What is the process for return or replacement of SI8441BB-D-ISR?
All SI8441BB-D-ISR units undergo pre-shipment inspection (PSI). If there is an issue with SI8441BB-D-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-D-ISR part is unused and in its original packaging.
Return procedure for SI8441BB-D-ISR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8441BB-D-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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