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Skyworks Solutions Inc. SI8440BB-C-IS1R
- Part No.:
- SI8440BB-C-IS1R
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SI8440BB-C-IS1R.pdf
- Description:
- DGTL ISO 2500VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,288
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Product details
Overview
SI8440BB-C-IS1R 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 <9.5 ns worst-case propagation delay, 0.5 ns typical channel-to-channel skew, and ultra-low power consumption (<3.8 mA per channel at 100 Mbps, 5 V). It serves as a high-reliability signal isolator in isolated gate drivers and industrial motor control interfaces.
For engineers reviewing the SI8440BB-C-IS1R datasheet, SI8440BB-C-IS1R pinout, SI8440BB-C-IS1R application, or SI8440BB-C-IS1R equivalent, this page delivers verified timing specs, SOIC-16 wide-body package details, safety certifications (UL, CSA, VDE), and real-world substitution guidance - all grounded in Skyworks Rev. 1.7 documentation.
Technical Context
The SI8440BB-C-IS1R implements capacitive isolation with on-chip RF modulation/demodulation circuitry, enabling DC–150 Mbps signal transmission across galvanically isolated barriers. Its dual-supply architecture supports independent 2.70–5.5 V operation on each side (VDD1/VDD2), with precise timing control via internal clock recovery and low-jitter output drivers.
It integrates enable inputs per channel pair (EN1/EN2), supporting tri-state output control with 5–8 ns enable-to-data-valid latency. The device achieves 25 kV/µs common-mode transient immunity (CMTI) and meets IEC 60747-5-2 (VDE 0884-2) for reinforced insulation up to 560 VPEAK.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | DC to 150 Mbps - supports high-speed serial interfaces including SPI, RS-485 transceiver control, and PWM feedback loops without external clocking. |
| Propagation Delay | 3.0–9.5 ns (typ/max) - enables sub-10 ns timing-critical applications like isolated ADC sampling triggers and real-time motor phase control. |
| Channel Skew | 0.5 ns typical - ensures synchronized multi-channel signal transfer essential for balanced three-phase inverter gate drive timing. |
| Supply Voltage | 2.70–5.5 V per side - allows interoperability with both 3.3 V microcontrollers and 5 V legacy logic, eliminating level-shifter requirements. |
| Isolation Rating | 2500 VRMS (1 min) - certified for reinforced insulation per UL 1577, CSA Component Notice 5A, and VDE IEC 60747-5-2. |
| Power @ 100 Mbps | <3.8 mA per channel (5 V) - reduces thermal load in densely packed industrial PCBs and extends battery life in portable isolated sensors. |
| CMTI | 25 kV/µs - maintains signal integrity during fast-switching events in SiC/GaN power stages and variable-frequency drives. |
Pinout & Package
SI8440BB-C-IS1R is housed in a 16-pin wide-body SOIC package (WB-SOIC-16) with 8.0 mm creepage/clearance, optimized for 2500 VRMS reinforced insulation. Pin numbering follows standard SOIC convention (pin 1 = top-left corner, counterclockwise).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | Input Channels A1–A4 | Unidirectional CMOS-compatible inputs referenced to VDD1; accept 0–VDD1 logic levels with ±10 µA leakage. |
| 5, 6 | Enable Inputs EN1, EN2 | Active-high enables for channels A1/A2 (EN1) and A3/A4 (EN2); outputs go high-impedance when low. |
| 7, 8 | VDD1, GND1 | Primary-side supply (2.70–5.5 V) and ground - decoupling capacitor required per Skyworks layout guidelines. |
| 9, 10, 11, 12 | Output Channels B1–B4 | Isolated CMOS outputs referenced to VDD2; drive 4 mA sink/source with VOH ≥ VDD2–0.4 V, VOL ≤ 0.4 V. |
| 13, 14 | VDD2, GND2 | Secondary-side supply (2.70–5.5 V) and ground - electrically isolated from VDD1/GND1; requires local bypass cap. |
| 15, 16 | NC, NC | No-connect pins - must remain unconnected per datasheet; not internally bonded or tested. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel isolation | Four independent bidirectional-capable channels in single WB-SOIC-16 footprint - replaces four discrete optocouplers, reducing board area by >60%. |
| Ultra-low power at speed | 3.6–5.4 mA total supply current at 100 Mbps (5 V), enabling thermally constrained designs like enclosed PLC modules and fanless inverters. |
| Precision timing | 1.5 ns pulse width distortion and 2 ns propagation delay skew - preserves signal integrity in high-resolution encoder interfaces and time-of-flight sensing. |
| AEC-Q100 qualified | Grade 1 (–40 to 125 °C) qualification - supports automotive subsystems including battery management system (BMS) isolation and onboard charger control. |
| No start-up initialization | Valid output within 15–40 µs of power application - eliminates boot-time delays in safety-critical systems requiring immediate fault monitoring. |
Applications
| Industrial Motor Control | Isolated Switch-Mode Power Supply |
|---|---|
|
Use Scenario: Isolating gate driver signals in 3-phase IGBT/SiC inverter stacks for HVAC compressors and servo drives. IC Role / Device Role / Timing Role: Quad-channel isolator transmitting PWM and fault signals across primary/secondary boundaries with <10 ns timing fidelity. Use Value: Enables precise dead-time control and fast overcurrent shutdown response (<100 ns loop latency) while meeting IEC 61800-5-1 reinforced insulation requirements. |
Use Scenario: Providing feedback isolation for voltage/current sensing and PWM controller communication in 1–3 kW AC/DC PSUs. IC Role / Device Role / Timing Role: Transmitting isolated analog-to-digital converter (ADC) outputs and controller enable signals with 25 kV/µs CMTI immunity. Use Value: Prevents noise coupling from high dv/dt switching nodes into regulation loops, improving output voltage stability to ±0.5% under dynamic load. |
| Hybrid Electric Vehicle Onboard Charger | Programmable Logic Controller I/O Module |
|
Use Scenario: Isolating CAN bus interface and AC line sensing in bidirectional OBC units compliant with ISO 15118 and SAE J1772. IC Role / Device Role / Timing Role: Level-shifting and isolating 3.3 V MCU UART/CAN signals to 5 V analog front-end and relay control circuits. Use Value: Meets automotive EMC requirements (CISPR 25 Class 5) and functional safety ASIL-B decomposition via certified 2500 VRMS barrier. |
Use Scenario: Digitally isolating 24 V DC field inputs and transistor outputs in modular PLC backplanes operating in factory-floor EMI environments. IC Role / Device Role / Timing Role: Replacing optocouplers in 16-channel DI/DO modules with deterministic 9.5 ns max propagation delay per channel. Use Value: Eliminates optocoupler aging drift, ensuring >60-year lifetime at 125 °C and enabling predictive maintenance via consistent input response time monitoring. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2402BRWZ | 2500 VRMS rating, 25 Mbps max data rate, 30 ns max propagation delay, SOIC-16 narrow body (4.01 mm creepage) | Limited to lower-speed control loops; insufficient for 100+ Mbps SPI or encoder interfaces | Choose when cost sensitivity outweighs speed needs and board space permits narrower SOIC footprint. |
| ISO6742QDWR | 5000 VRMS rating, 50 Mbps max data rate, 25 ns max propagation delay, SOIC-16 wide body (8.0 mm creepage) | Higher isolation but slower timing; lacks AEC-Q100 qualification and 150 Mbps capability | Select for medical or high-voltage industrial systems where 5 kVRMS is mandated and 150 Mbps is unnecessary. |
Compared with ADUM2402BRWZ and ISO6742QDWR, SI8440BB-C-IS1R delivers 3× higher data rate and 3× tighter timing control in the same wide-body SOIC package, making it optimal for next-generation EV traction inverters and high-resolution industrial motion control - though not recommended for new designs per Skyworks migration guidance.
Availability
SI8440BB-C-IS1R is available at Aetrix Electronics and suitable for industrial motor control, isolated switch-mode power supplies, and hybrid electric vehicle onboard chargers requiring stable component supply and long-term lifecycle support.
Supply support for SI8440BB-C-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.
The Si84xx family was engineered for high-reliability galvanic isolation in harsh environments, targeting industrial automation, automotive electrification, and energy infrastructure where safety certification, timing precision, and thermal robustness are critical.
FAQ
What is the maximum operating temperature for SI8440BB-C-IS1R?
The SI8440BB-C-IS1R is rated for continuous operation from –40 °C to +125 °C at full 150 Mbps data rate and 5 V supply, validated across all electrical parameters in Table 3 of the Skyworks Rev. 1.7 datasheet. This range applies to both VDD1 and VDD2 sides independently, supporting deployment in engine bay or industrial enclosure environments.
Does SI8440BB-C-IS1R require external components for basic operation?
SI8440BB-C-IS1R requires only two 0.1 µF ceramic bypass capacitors - one between VDD1 and GND1, and another between VDD2 and GND2 - placed as close as possible to their respective pins. No pull-up/down resistors, level shifters, or external clocks are needed, per Skyworks Section 1 and layout recommendations on page 21.
What safety certifications apply to SI8440BB-C-IS1R?
SI8440BB-C-IS1R carries UL 1577 recognition (2500 VRMS, File E257455), CSA Component Notice 5A (IEC 60950-1/61010-1), and VDE IEC 60747-5-2 certification (File 5006301-4880-0001). All certifications cover the 2500 VRMS isolation rating and apply specifically to the SI8440BB-C-IS1R variant in wide-body SOIC packaging.
How does the enable function work on SI8440BB-C-IS1R?
SI8440BB-C-IS1R has two enable inputs: EN1 controls channels B1/B2, and EN2 controls B3/B4. When an enable pin is low, its associated outputs enter high-impedance state within 7.0–9.2 ns (ten2). When high, outputs follow inputs with 5.0–8.0 ns latency (ten1), as defined in Figure 1 and Table 3 of the datasheet.
Is SI8440BB-C-IS1R pin-compatible with other Si844x variants?
Yes - SI8440BB-C-IS1R shares identical pinout, package, and electrical interface with all Si8440/41/42/45 family members in wide-body SOIC-16, including SI8441BB-C-IS1R and SI8442BB-C-IS1R. Differences are limited to data rate grade (150 Mbps vs. 1 Mbps/25 Mbps) and internal configuration, requiring no PCB changes for drop-in replacement within the same speed grade.
SI8440BB-C-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:
- 4/0
- 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
SI8440BB-C-IS1R FAQ
1.How can I place an order for SI8440BB-C-IS1R through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8440BB-C-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 SI8440BB-C-IS1R reliable?
The price and inventory of SI8440BB-C-IS1R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8440BB-C-IS1R is usually 5 days.
3.What payment methods are accepted for SI8440BB-C-IS1R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8440BB-C-IS1R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8440BB-C-IS1R?
SI8440BB-C-IS1R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8440BB-C-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 SI8440BB-C-IS1R?
For technical support, including SI8440BB-C-IS1R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8440BB-C-IS1R requirements.
6.How does Aetrix verify that SI8440BB-C-IS1R is sourced from the original manufacturer or authorized distributors?
All SI8440BB-C-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 SI8440BB-C-IS1R meets industry standards.
7.What is the process for return or replacement of SI8440BB-C-IS1R?
All SI8440BB-C-IS1R units undergo pre-shipment inspection (PSI). If there is an issue with SI8440BB-C-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 SI8440BB-C-IS1R part is unused and in its original packaging.
Return procedure for SI8440BB-C-IS1R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8440BB-C-IS1R 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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