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Skyworks Solutions Inc. SI83414ACA-IF
- Part No.:
- SI83414ACA-IF
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83414ACA-IF.pdf
- Description:
- LINEAR IC'S
- Quantity:
- Payment:
- Shipping:
Inventory:2,102
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Product details
Overview
SI83414ACA-IF from Skyworks Solutions is a quad-channel isolated smart switch configured as low-side, open-drain drivers with 0.7 A continuous current per channel, 155 mΩ RON, and integrated fault protection including inrush current mode (8 A for 20 ms) and open-channel detection. It targets industrial PLC output modules driving solenoids and relays under 9–32 V supply rails.
For engineers reviewing the SI83414ACA-IF datasheet, SI83414ACA-IF pinout, SI83414ACA-IF application, or SI83414ACA-IF equivalent, key selection considerations include its dedicated open-drain low-side topology, VDD2_WRN undervoltage warning pin, open-channel indicator (OPEN_CH), and absence of SPI interface - requiring parallel control only with asynchronous OE enable.
Technical Context
The SI83414ACA-IF implements four galvanically isolated low-side switches using Skyworks' CMOS-based RF isolation barrier, delivering >100 kV/µs CMTI and 1.5 kVRMS safety rating. Each channel integrates voltage, current, and temperature sensing with autonomous protection logic.
It operates with dual supplies: logic side (VDD1 = 2.25–5.5 V) and power side (VDD2 = 9–32 V), and features fixed-function parallel interface with no SPI - diagnostics are exposed via dedicated pins: VDD2_WRN, FLT, and OPEN_CH, all active-low open-drain outputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Low-side, open-drain configuration - sinks load current to GND2; requires external pull-up for driven loads. |
| Continuous Current | 0.7 A per channel - supports solenoids, relays, and lamps at full rated load without derating up to 125 °C. |
| RON | 155 mΩ max - minimizes conduction loss and self-heating during sustained operation. |
| Inrush Current Mode | 8 A for 20 ms - enables reliable cold-start of incandescent lamps without tripping overcurrent protection. |
| Isolation Rating | 1.5 kVRMS for 1 min - certified to UL 1577, CSA 62368-1, and GB4943.1 for functional safety in industrial environments. |
| CMTI | >100 kV/µs - ensures robust noise immunity in electrically noisy PLC backplanes and motor drive cabinets. |
| Operating Temp | −40 °C to +125 °C - qualified for extended industrial ambient and PCB self-heating conditions. |
Pinout & Package
SI83414ACA-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 under continuous 0.7 A/channel load.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Logic Supply Input | 2.25–5.5 V digital supply powering input interface and isolation transmitter; powers internal logic even when VDD2 is off via diode coupling. |
| OE | Asynchronous Output Enable | Active-high global enable - disables all four Bn outputs immediately when pulled low; overrides individual channel inputs. |
| GND1 | Logic Ground | Reference for VDD1 and all digital inputs; must be separated from GND2 by ≥8 mm creepage/clearance. |
| GND2 | Power Ground | Return path for all four Bn switch currents; connects directly to load return and VDD2 decoupling. |
| VDD2 | Switch Supply Input | 9–32 V analog supply powering output stage; monitored for undervoltage warning (VDD2_WRN) and fault shutdown. |
| A1–A4 | Parallel Input Channels | Active-high logic inputs controlling B1–B4 outputs respectively; compatible with 2.25 V MCU GPIOs. |
| B1–B4 | Low-Side Switch Outputs | Open-drain N-channel MOSFET drains - sink current to GND2; require external pull-up to VDD2 or separate rail. |
| VDD2_WRN | Supply Warning Indicator | Active-low open-drain output asserted when VDD2 drops below warning threshold (VDD2UV9); used for system-level brown-out alert. |
| OPEN_CH | Open-Channel Detector | Active-low open-drain output asserted when any Bn output is open-circuit (no load or broken wire); enables predictive maintenance. |
| FLT | Fault Indicator | Active-low open-drain output asserted on any detected fault (overcurrent, overtemperature, VDD1/VDD2 UV/OV); latched until cleared by power cycle. |
| DNC / NC | No-Connect | Unbonded pins - must be left floating or tied to GND2 per layout guidelines; no electrical function. |
Key Features
| Feature | Design Value |
|---|---|
| Quad Low-Side Switching | Four independent 0.7 A, 155 mΩ open-drain outputs with autonomous thermal/current limiting - eliminates need for external sense resistors or discrete protection. |
| Inrush Current Mode | 8 A peak for 20 ms per channel - sustains lamp filament preheat without triggering overcurrent shutdown, verified across temperature and supply range. |
| Open-Channel Detection | Dedicated OPEN_CH pin reports open-load condition on any channel - enables real-time wiring integrity monitoring in safety-critical I/O modules. |
| VDD2 Undervoltage Warning | VDD2_WRN pin asserts before fault shutdown - provides early warning of marginal power rail, allowing host controller to initiate graceful shutdown or alarm. |
| CMOS RF Isolation | 1.5 kVRMS isolation with >100 kV/µs CMTI - replaces optocouplers with higher reliability, longer lifetime, and no LED aging or CTR degradation. |
Applications
| Programmable Logic Controllers (PLCs) | Industrial Data Acquisition Systems |
|---|---|
Use Scenario: Digital output module in modular PLC rack driving 24 V DC solenoid valves and relay coils in factory automation lines. IC Role / Device Role / Timing Role: Low-side switch providing isolated, protected, and diagnosed load control with <10 µs update rate and open-wire detection. Use Value: Eliminates external flyback diodes and current-sense circuits while enabling predictive maintenance via OPEN_CH and VDD2_WRN alerts. | Use Scenario: Remote I/O node collecting sensor actuation commands from central controller in hazardous-area process monitoring systems. IC Role / Device Role / Timing Role: Galvanically isolated output driver ensuring signal integrity across ground potential differences between field and control room. Use Value: Delivers >100 kV/µs transient immunity and 1.5 kVRMS isolation to meet IEC 61131-2 requirements for industrial communication networks. |
| Smart Solid-State Relays | Motion Control I/O Modules |
Use Scenario: Compact DIN-rail mounted SSR replacing electromechanical relays in HVAC and packaging machinery control panels. IC Role / Device Role / Timing Role: Quad low-side driver with inrush mode supporting incandescent pilot lights and small AC contactor coils via DC interface. Use Value: Enables silent, bounce-free switching with 8 A inrush capability and built-in demagnetization clamp - extends contactor life and reduces EMI. | Use Scenario: Axis-specific enable/disable output in multi-axis servo drive cabinet, controlling brake release and safety interlocks. IC Role / Device Role / Timing Role: Fault-monitored switch providing fail-safe de-energization with FLT and OPEN_CH feedback to motion controller. Use Value: Supports SIL-2 functional safety architecture by reporting open-circuit faults and supply warnings before catastrophic failure occurs. |
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 |
|---|---|---|---|
| SI83414BBA-IF | No OPEN_CH or VDD2_WRN pins; identical 4-channel low-side, 0.7 A, 155 mΩ, parallel-only interface. | Lacks open-channel and supply warning diagnostics - suitable only where wiring integrity monitoring is not required. | Select when cost optimization is prioritized over predictive maintenance capability and system-level power rail monitoring. |
| SI83414ABA-IF | Includes OPEN_CH and VDD2_WRN pins like SI83414ACA-IF, but adds LEDn status indicators (LED1–LED4) for per-channel visual feedback. | Provides per-channel status indication via open-drain LEDs - useful for front-panel diagnostics in human-accessible equipment. | Select when local operator visibility of channel states is required alongside open-wire and supply warning detection. |
Compared with SI83414BBA-IF, SI83414ACA-IF adds critical open-circuit and supply warning diagnostics without increasing pin count or complexity; versus SI83414ABA-IF, it trades per-channel LED indicators for lower BOM cost and simpler layout where visual feedback is unnecessary.
Availability
SI83414ACA-IF is available at Aetrix Electronics and suitable for industrial programmable logic controllers, smart solid-state relays, and motion control I/O modules requiring stable component supply, long-term lifecycle assurance, and certified isolation performance.
Supply support for SI83414ACA-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 U.S.-based semiconductor company specializing in analog and mixed-signal connectivity solutions for infrastructure, automotive, and industrial markets.
The Si834x product line was designed specifically for industrial digital output modules, replacing legacy optocoupler-plus-driver designs with integrated, isolated, and self-protecting smart switches compliant to IEC 61131-2 and safety standards.
FAQ
What is the switch configuration of SI83414ACA-IF?
The SI83414ACA-IF is a quad-channel low-side, open-drain switch - each Bn output sinks current to GND2 and requires an external pull-up to VDD2 or another supply rail. It does not support high-side sourcing, and its A1–A4 inputs are active-high parallel controls with global OE enable. This configuration is optimized for driving solenoids, relays, and lamps in industrial I/O modules.
Does SI83414ACA-IF support SPI communication?
No, SI83414ACA-IF does not support SPI communication. It uses a parallel-only interface with A1–A4 inputs and OE control. Diagnostics are reported exclusively through dedicated pins: FLT (fault), VDD2_WRN (supply warning), and OPEN_CH (open-channel). For SPI-enabled variants, consider SI83418BDA-IF or SI83418ADA-IF.
What diagnostic functions are available on SI83414ACA-IF?
SI83414ACA-IF provides three hardware-diagnostic outputs: FLT (active-low fault indicator), VDD2_WRN (active-low undervoltage warning), and OPEN_CH (active-low open-channel detector). These pins report aggregated conditions across all four channels and require no software polling - enabling immediate system-level response to supply issues or broken wiring without MCU intervention.
What is the purpose of the OPEN_CH pin on SI83414ACA-IF?
The OPEN_CH pin on SI83414ACA-IF is an active-low, open-drain output that asserts when any of the four Bn outputs detects an open-circuit load - such as a disconnected wire, blown fuse, or failed solenoid coil. This enables real-time wiring integrity verification in safety-critical applications like PLC output modules, eliminating the need for external continuity testing circuitry.
How does the inrush current mode work in SI83414ACA-IF?
The inrush current mode in SI83414ACA-IF delivers up to 8 A peak current for 20 ms per channel during initial turn-on - specifically engineered to preheat incandescent lamp filaments without triggering overcurrent protection. This feature is automatic, requires no configuration, and operates independently of load resistance or temperature, ensuring reliable cold-start behavior across the full −40 °C to +125 °C operating range.
SI83414ACA-IF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- 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:
- 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)
SI83414ACA-IF FAQ
1.How can I place an order for SI83414ACA-IF through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83414ACA-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 SI83414ACA-IF reliable?
The price and inventory of SI83414ACA-IF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83414ACA-IF is usually 5 days.
3.What payment methods are accepted for SI83414ACA-IF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83414ACA-IF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83414ACA-IF?
SI83414ACA-IF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83414ACA-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 SI83414ACA-IF?
For technical support, including SI83414ACA-IF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83414ACA-IF requirements.
6.How does Aetrix verify that SI83414ACA-IF is sourced from the original manufacturer or authorized distributors?
All SI83414ACA-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 SI83414ACA-IF meets industry standards.
7.What is the process for return or replacement of SI83414ACA-IF?
All SI83414ACA-IF units undergo pre-shipment inspection (PSI). If there is an issue with SI83414ACA-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 SI83414ACA-IF part is unused and in its original packaging.
Return procedure for SI83414ACA-IF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83414ACA-IF Tags
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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
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ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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