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Skyworks Solutions Inc. SI83414ACA-IFR
- Part No.:
- SI83414ACA-IFR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83414ACA-IFR.pdf
- Description:
- LINEAR IC'S
- Quantity:
- Payment:
- Shipping:
Inventory:4,626
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Product details
Overview
SI83414ACA-IFR from Skyworks Solutions is a quad-channel isolated smart switch with low-side sink configuration, 0.7 A continuous current per channel, 1.5 kVRMS galvanic isolation, and integrated open-channel detection. It operates from 9–32 V switch supply and 2.25–5.5 V logic supply, targeting industrial PLC output modules driving solenoids and relays.
For engineers reviewing the SI83414ACA-IFR datasheet, SI83414ACA-IFR pinout, SI83414ACA-IFR application, or SI83414ACA-IFR equivalent, key selection considerations include its dedicated open-channel indicator (OPEN_CH), absence of SPI interface, Inrush Current Mode disable, and DFN-32 package with 9×9 mm footprint for high-density I/O modules.
Technical Context
The SI83414ACA-IFR implements four independent low-side switches using RF-based CMOS isolation, each with real-time voltage, current, and temperature sensing. Its fault protection includes undervoltage lockout on both VDD1 and VDD2, overtemperature constraint, and open-circuit load detection via dedicated OPEN_CH pin.
It uses parallel input control with asynchronous OE pin and exposes diagnostics through discrete open-drain indicator pins-not SPI-making it compatible with legacy optocoupler-replacement designs. The device supports Inrush Current Mode disabled (per Ordering Guide Table 1) and features a multi-voltage smart clamp enabling unlimited EAS handling and fast turn-OFF for inductive loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Type | Low-side sink switch (sinks current to GND2) |
| Channels | 4 independent channels with isolated control and sensing |
| Continuous Current | 0.7 A per channel at 25 °C ambient, RON = 155 mΩ |
| Isolation Rating | 1.5 kVRMS for 1 minute (UL 1577 recognized) |
| Supply Ranges | VDD1: 2.25–5.5 V; VDD2: 9–32 V - enables direct MCU interfacing and industrial bus compatibility |
| Open-Channel Detection | Dedicated active-low OPEN_CH pin reports any open-circuit condition across all four channels |
| Operating Temp | –40 °C to +125 °C - qualified for harsh industrial environments |
| CMTI | >100 kV/µs - ensures robust operation in noisy motor drive or power conversion settings |
Pinout & Package
SI83414ACA-IFR is housed in a compact 9×9 mm DFN-32 package with exposed thermal pad (EP) on underside for enhanced heat dissipation in high-current industrial modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Logic supply input | Powers digital interface; accepts 2.25–5.5 V; internal UVLO at ~2.05 V |
| OE | Asynchronous output enable | Active-high global enable; forces all outputs OFF when low |
| GND1 | Logic ground reference | Reference for VDD1 and digital inputs; galvanically isolated from GND2 |
| A1–A4 | Parallel input control lines | Direct logic-level control of each channel; high = ON (sink enabled) |
| B1–B4 | Switch output terminals | Low-side drain outputs; connect to load cathodes; sink up to 0.7 A each |
| VDD2 | Power supply for switches | Drives loads at 9–32 V; monitored for UV warning and fault shutdown |
| GND2 | Power ground reference | Return path for switched loads; isolated from GND1; connects to system power ground |
| OPEN_CH | Open-circuit indicator | Active-low open-drain output asserting when any channel detects open load |
| FLT | Fault status indicator | Active-low open-drain output asserting on any detected fault (e.g., overtemp, UV, OC) |
| NC | No-connect | Two pins (positions 29 and 30) are unconnected; must be left floating or grounded per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Galvanic isolation barrier | CMOS-based RF isolation delivering 1.5 kVRMS rating and >100 kV/µs CMTI - eliminates optocoupler aging and drift |
| Smart output clamp | Multi-voltage clamp architecture handles unlimited demagnetization energy (EAS) while enabling fast turn-OFF - reduces arcing in relay/solenoid coils |
| Open-circuit detection | Dedicated OPEN_CH pin provides immediate, hardware-level feedback on broken wiring or disconnected loads - no SPI polling required |
| Undervoltage monitoring | Independent VDD1 and VDD2 UVLO circuits with warning and shutdown thresholds - prevents erratic switching during brownout conditions |
| Thermal protection | Overtemperature constraint limits output current before shutdown - maintains safe operation under sustained overload or poor heatsinking |
| Industrial-grade packaging | DFN-32 with 9×9 mm footprint and exposed thermal pad - supports high-density PCB layouts and efficient thermal management in DIN-rail modules |
Applications
| Programmable Logic Controller (PLC) Output Module | Industrial Data Acquisition System |
|---|---|
Use Scenario: Driving 24 VDC solenoid valves and indicator lamps in modular PLC backplanes with strict IEC 61131-2 compliance requirements. IC Role / Device Role / Timing Role: Low-side isolated switch providing galvanically separated, fault-protected load control with real-time open-load reporting. Use Value: Eliminates need for external optocouplers and discrete protection circuitry while enabling single-chip 4-channel output with OPEN_CH fault visibility. | Use Scenario: Monitoring and controlling field devices (e.g., proximity sensors, limit switches) in distributed I/O subsystems with centralized diagnostics. IC Role / Device Role / Timing Role: Isolated interface between microcontroller and 24 V industrial fieldbus loads, delivering deterministic timing and hardware-level fault signaling. Use Value: Reduces BOM count by integrating isolation, protection, and diagnostics into one DFN package - simplifies certification for UL/CSA/CQC safety standards. |
| Motion Control I/O Terminal Block | Smart Solid-State Relay Replacement |
Use Scenario: Compact DIN-rail mounted I/O terminal blocks controlling stepper motor drivers, brake coils, and auxiliary contactors in motion systems. IC Role / Device Role / Timing Role: Four-channel low-side driver with fast 10 µs update rate and thermal derating - ensures precise sequencing and safe fail-safe behavior. Use Value: Enables board-level integration of relay functionality with superior lifetime, no mechanical wear, and built-in open-circuit detection for predictive maintenance. | Use Scenario: Replacing electromechanical relays in HVAC controllers, lighting panels, and power distribution units where silent operation and long service life are critical. IC Role / Device Role / Timing Role: Solid-state replacement offering zero-contact bounce, sub-10 µs switching, and integrated demagnetization clamp for inductive loads. Use Value: Delivers 100% duty-cycle capability with no coil heating or contact erosion - extends system MTBF and eliminates periodic relay replacement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated low-side switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI83414ABA-IFR | Includes LEDn status indicators (LED1–LED4); OPEN_CH not present | Used where per-channel visual status is prioritized over consolidated open-load reporting | Select when end-user LED feedback is required and OPEN_CH is unnecessary |
| SI83414BBA-IFR | No OPEN_CH or LEDn pins; only FLT and OE exposed; Inrush Mode disabled | Simpler pinout for space-constrained designs where only global fault indication is needed | Select when minimal indicator pin count is critical and open-circuit detection is handled externally |
Compared with SI83414ABA-IFR and SI83414BBA-IFR, SI83414ACA-IFR uniquely provides OPEN_CH for immediate open-load detection without software polling, while omitting per-channel LEDs - optimizing for diagnostic completeness and pin efficiency in automated test and control systems.
Availability
SI83414ACA-IFR is available at Aetrix Electronics and suitable for programmable logic controllers, industrial data acquisition systems, and motion controller I/O modules requiring stable component supply, long-term lifecycle support, and certified safety isolation.
Supply support for SI83414ACA-IFR 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 communications, industrial, and automotive markets.
The Si834x product line delivers isolated smart switches designed specifically for industrial control applications, combining galvanic isolation, comprehensive fault protection, and simplified interface options to replace legacy optocoupler-plus-driver architectures.
FAQ
What is the isolation voltage rating of the SI83414ACA-IFR?
The SI83414ACA-IFR has a safety-rated galvanic isolation of 1.5 kVRMS for 1 minute, certified under UL 1577 and compliant with IEC 61131-2. This rating applies across the full DFN-32 package creepage and clearance distances and supports operation in industrial environments with high transient noise.
Does the SI83414ACA-IFR support SPI communication?
No, the SI83414ACA-IFR does not include SPI functionality. It uses a parallel input interface with dedicated A1–A4 control lines and OE enable, plus hardware indicator pins (FLT, OPEN_CH). SPI is only available on Si834x variants with "D" or "F" in the third character of the part number (e.g., SI83418BDA-IFR).
What load types can the SI83414ACA-IFR drive reliably?
The SI83414ACA-IFR is optimized for resistive and inductive loads including 24 VDC solenoids, relays, indicator lamps, and brake coils. Its smart output clamp handles unlimited demagnetization energy (EAS), enabling safe, fast turn-OFF without external snubbers - critical for inductive load reliability.
How does the OPEN_CH pin function on the SI83414ACA-IFR?
The OPEN_CH pin is an active-low, open-drain output that asserts when any of the four channels detects an open-circuit load condition. It requires an external pull-up resistor and provides immediate hardware-level fault visibility without SPI access or firmware polling - essential for safety-critical diagnostics in PLC modules.
What is the maximum continuous current per channel for the SI83414ACA-IFR?
The SI83414ACA-IFR delivers 0.7 A continuous current per channel at 25 °C ambient, with RON = 155 mΩ. Derating applies above 25 °C per the thermal characteristics in the datasheet; at 100 °C ambient, max continuous current drops to approximately 0.45 A per channel with proper PCB copper area.
Is Inrush Current Mode enabled on the SI83414ACA-IFR?
No, Inrush Current Mode is disabled on the SI83414ACA-IFR, as confirmed by Table 1 (Ordering Guide) in the datasheet. This variant is intended for standard load switching where peak inrush (e.g., cold lamp filaments) is not required - unlike SI83414AAA-IFR which enables 8 A for 20 ms.
SI83414ACA-IFR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- Si834x
- Package/Case:
- 32-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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-IFR FAQ
1.How can I place an order for SI83414ACA-IFR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83414ACA-IFR 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-IFR reliable?
The price and inventory of SI83414ACA-IFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83414ACA-IFR is usually 5 days.
3.What payment methods are accepted for SI83414ACA-IFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83414ACA-IFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83414ACA-IFR?
SI83414ACA-IFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83414ACA-IFR 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-IFR?
For technical support, including SI83414ACA-IFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83414ACA-IFR requirements.
6.How does Aetrix verify that SI83414ACA-IFR is sourced from the original manufacturer or authorized distributors?
All SI83414ACA-IFR 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-IFR meets industry standards.
7.What is the process for return or replacement of SI83414ACA-IFR?
All SI83414ACA-IFR units undergo pre-shipment inspection (PSI). If there is an issue with SI83414ACA-IFR, 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-IFR part is unused and in its original packaging.
Return procedure for SI83414ACA-IFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83414ACA-IFR 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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