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Skyworks Solutions Inc. SI83414BBA-IF
- Part No.:
- SI83414BBA-IF
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83414BBA-IF.pdf
- Description:
- FOUR CHANNEL SOURCING OUTPUT WIT
- Quantity:
- Payment:
- Shipping:
Inventory:3,505
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Product details
Overview
SI83414BBA-IF from Skyworks Solutions is a 4-channel isolated low-side smart switch IC with galvanic CMOS isolation, 0.7 A continuous current per channel (155 mΩ RON), 9–32 V switch supply, and parallel-only control interface. It integrates overcurrent, overtemperature, undervoltage, and open-circuit protection, and targets industrial PLC output modules driving solenoids, relays, and lamps.
For engineers reviewing the SI83414BBA-IF datasheet, SI83414BBA-IF pinout, SI83414BBA-IF application, or SI83414BBA-IF equivalent, key selection considerations include its low-side sinking topology, absence of SPI interface, dedicated channel status indicators (LED1–LED4), lack of inrush current mode, and compatibility with 2.25–5.5 V logic MCUs in safety-isolated industrial I/O designs.
Technical Context
The SI83414BBA-IF implements four independent low-side switches with integrated current-sensing, thermal monitoring, and multi-voltage clamp circuitry for inductive load demagnetization. Each channel features dedicated isolation barriers between logic and power domains, enabling fault-tolerant operation without initialization.
It uses parallel digital inputs (A1–A4) and an asynchronous output enable (OE) for high-speed switching, with status feedback via open-drain, active-low LEDn pins. Diagnostics are reported exclusively through hardware indicator pins-no SPI interface is present-making it a drop-in replacement for optocoupler-based relay drivers requiring minimal firmware integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Low-side sinking switch - connects load to GND2 when enabled; requires external pull-up to VDD2. |
| Channels | 4 independent channels - enables discrete control of four industrial loads without shared current paths. |
| Continuous Current | 0.7 A per channel - supports solenoids, small relays, and indicator lamps at ambient ≤125°C. |
| RON | 155 mΩ max - minimizes conduction loss and self-heating under full load at 0.7 A. |
| Switch Supply Range | 9 V–32 V - compatible with standard industrial 24 V DC systems and tolerant of brownout conditions. |
| Logic Supply Range | 2.25 V–5.5 V - interfaces directly with modern low-voltage MCUs (e.g., ARM Cortex-M0+) without level shifting. |
| Isolation Rating | 1.5 kVRMS - certified for functional isolation in PLC backplanes and I/O modules per IEC 61131-2. |
| CMTI | >100 kV/µs - ensures robust noise immunity in electrically noisy factory environments with fast transients. |
Pinout & Package
SI83414BBA-IF is housed in a compact 9 mm × 9 mm DFN-32 package with exposed thermal pad (EP), optimized for high-density industrial PCB layouts and thermal dissipation in convection-cooled enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Logic supply input | Powers internal digital logic and isolation transmitter; accepts 2.25–5.5 V; must be decoupled near pin. |
| GND1 | Logic ground reference | Return path for VDD1; must be separated from power ground (GND2) to maintain isolation integrity. |
| A1–A4 | Parallel channel control inputs | Active-high logic inputs controlling B1–B4 outputs; each drives one low-side switch independently. |
| OE | Asynchronous output enable | Global enable/disable: OE = L disables all outputs regardless of A1–A4 state; OE = H enables normal operation. |
| VDD2 | Switch supply input | Powers output stage and clamp circuitry; accepts 9–32 V; supplies energy to connected loads. |
| GND2 | Power ground reference | Return path for VDD2 and load current; galvanically isolated from GND1; connects to load return. |
| B1–B4 | Low-side switch outputs | Open-drain NMOS outputs sinking up to 0.7 A; connect to load cathodes or relay coils; require external VDD2 pull-up. |
| LED1–LED4 | Channel status indicators | Active-low open-drain outputs reflecting real-time ON/OFF state of B1–B4; drive LEDs or optocouplers directly. |
| FLT | Fault indicator | Active-low open-drain output asserted when any fault (overtemp, overcurrent, UVLO, open-load) is detected. |
| DNC / NC | No-connect terminals | Not internally bonded; must be left floating or tied to GND2 per layout guidelines to avoid EMI coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Galvanic CMOS isolation | Replaces optocouplers with >100 kV/µs CMTI and 1.5 kVRMS rating - eliminates LED aging and improves long-term reliability. |
| Multi-voltage output clamp | Handles unlimited demagnetization energy (EAS) during inductive turn-off - prevents voltage spikes and contact arcing in relay/solenoid loads. |
| Channel status indicators (LED1–LED4) | Hardware-level real-time feedback on each output state - enables immediate visual diagnostics without MCU polling or SPI overhead. |
| Comprehensive fault protection | Integrated detection of overcurrent, overtemperature, VDD2 undervoltage, and open-circuit faults - shuts down affected channel while preserving others. |
| Industrial-grade operating range | –40°C to +125°C ambient - supports deployment in uncontrolled cabinet environments without forced cooling. |
| IEC 61131-2 compliance | Validated for programmable controller output module use - meets surge, noise, and insulation requirements for industrial automation. |
Applications
| PLC Digital Output Module | Industrial Data Acquisition Node |
|---|---|
|
Use Scenario: Replacing discrete optocoupler + MOSFET driver pairs in 24 V DC output cards for modular PLC chassis. IC Role / Device Role: Low-side switch IC providing isolated, protected, and status-indicated drive for up to four field devices per IC. Use Value: Reduces component count by 60% vs. discrete solutions, eliminates optocoupler drift, and enables per-channel LED status without firmware. |
Use Scenario: Driving solenoid valves and indicator lamps in distributed I/O nodes connected to EtherCAT or PROFINET networks. IC Role / Device Role: Isolated output interface bridging microcontroller GPIO to 24 V industrial loads with built-in diagnostics. Use Value: Enables rapid fault identification via FLT and LEDn pins - cuts troubleshooting time in field-deployed nodes where SPI access is impractical. |
| Smart Solid-State Relay Board | Motion Controller Axis Enable |
|
Use Scenario: Building compact, fanless solid-state relay boards for OEM machine control panels with space-constrained enclosures. IC Role / Device Role: Four-channel low-side driver with thermal shutdown and EAS clamp - replaces electromechanical relays in high-cycle applications. Use Value: Achieves >10M switching cycles with no contact wear, while 155 mΩ RON limits self-heating to safe levels at 0.7 A continuous. |
Use Scenario: Enabling/disabling servo amplifier power stages or brake circuits in multi-axis CNC motion controllers. IC Role / Device Role: Safety-isolated enable gate for critical axis functions - OE pin allows synchronized global disable across all axes. Use Value: Provides hardware-level emergency stop response (<10 µs propagation delay) independent of MCU firmware execution state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-side isolated switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI83414AAA-IF | Includes Inrush Current Mode (8 A for 20 ms); same pinout and package. | Required for lamp loads with high cold-filament inrush; SI83414BBA-IF lacks this feature. | Select SI83414AAA-IF if driving incandescent indicators or halogen lamps; otherwise SI83414BBA-IF suffices for solenoids/relays. |
| SI83404BAA-IF | Same 4-channel low-side topology, 0.7 A rating, and parallel interface - but includes VDD2 warning indicator (VDD2_WRN). | Provides early undervoltage alert before fault shutdown; SI83414BBA-IF reports only fault (FLT), not warning. | Choose SI83404BAA-IF when predictive power monitoring is needed; SI83414BBA-IF suits designs where only fault-level alerts are required. |
Compared with SI83414AAA-IF and SI83404BAA-IF, the SI83414BBA-IF offers the most streamlined feature set - omitting both inrush mode and VDD2 warning - making it optimal for cost-sensitive, high-volume PLC output modules where only basic ON/OFF control and fault indication are needed.
Availability
SI83414BBA-IF is available at Aetrix Electronics and suitable for industrial programmable logic controllers, motion controllers, and smart solid-state relay designs requiring stable component supply, long lifecycle support, and consistent parametric performance across production batches.
Supply support for SI83414BBA-IF 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 infrastructure, automotive, and industrial markets.
The Si834x family was designed specifically for industrial I/O isolation - replacing aging optocoupler-based relay drivers with robust, integrated, and diagnostic-rich smart switches for PLCs and distributed control systems.
FAQ
What is the switching topology of the SI83414BBA-IF?
The SI83414BBA-IF implements a low-side sinking configuration: each output (B1–B4) is an open-drain NMOS that connects the load to GND2 when enabled. The load must be connected between VDD2 and the output pin. This topology is ideal for driving common-anode industrial loads like solenoids and relay coils.
Does the SI83414BBA-IF support SPI communication?
No, the SI83414BBA-IF does not include SPI functionality. It uses a parallel control interface with inputs A1–A4 and OE, and reports status via hardware pins (LED1–LED4, FLT). For SPI-capable variants, consider SI83418BDA-IF or SI83414BFA-IF - but those are not pin-compatible with SI83414BBA-IF.
What fault conditions trigger the FLT pin on the SI83414BBA-IF?
The FLT pin on the SI83414BBA-IF asserts low for overtemperature, overcurrent, VDD2 undervoltage, and open-circuit (load disconnect) faults. It remains active until all fault conditions clear and the internal fault latch resets - no software intervention is required, as the SI83414BBA-IF operates autonomously without SPI.
Can the SI83414BBA-IF drive inductive loads safely?
Yes, the SI83414BBA-IF includes a patented multi-voltage output clamp that safely dissipates unlimited demagnetization energy (EAS) during inductive turn-off. This eliminates destructive voltage spikes and enables reliable switching of solenoids, relays, and contactors without external snubbers or flyback diodes.
What is the maximum ambient temperature for continuous operation of the SI83414BBA-IF?
The SI83414BBA-IF is rated for continuous operation from –40°C to +125°C ambient temperature. Its thermal design and 155 mΩ RON ensure safe 0.7 A per channel performance at full temperature range when mounted on a PCB with adequate copper area and airflow per Skyworks' recommended layout guidelines.
SI83414BBA-IF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si834x
- Package/Case:
- 32-VFDFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Bidirectional, Unidirectional
- Voltage - Isolation:
- 1500Vrms
- Common Mode Transient Immunity (Min):
- 100kV/µs
- Data Rate:
- -
- Propagation Delay tpLH / tpHL (Max):
- 3.7µs, 3.7µs
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- -, 3µs
- Voltage - Supply:
- 2.25V ~ 5.5V, 9V ~ 32V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-DFN (9x9)
SI83414BBA-IF FAQ
1.How can I place an order for SI83414BBA-IF through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83414BBA-IF 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 SI83414BBA-IF reliable?
The price and inventory of SI83414BBA-IF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83414BBA-IF is usually 5 days.
3.What payment methods are accepted for SI83414BBA-IF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83414BBA-IF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83414BBA-IF?
SI83414BBA-IF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83414BBA-IF 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 SI83414BBA-IF?
For technical support, including SI83414BBA-IF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83414BBA-IF requirements.
6.How does Aetrix verify that SI83414BBA-IF is sourced from the original manufacturer or authorized distributors?
All SI83414BBA-IF 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 SI83414BBA-IF meets industry standards.
7.What is the process for return or replacement of SI83414BBA-IF?
All SI83414BBA-IF units undergo pre-shipment inspection (PSI). If there is an issue with SI83414BBA-IF, 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 SI83414BBA-IF part is unused and in its original packaging.
Return procedure for SI83414BBA-IF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83414BBA-IF Tags
-
ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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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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