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Skyworks Solutions Inc. SI83414BCA-IFR
- Part No.:
- SI83414BCA-IFR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83414BCA-IFR.pdf
- Description:
- FOUR CHANNEL SOURCING OUTPUT WIT
- Quantity:
- Payment:
- Shipping:
Inventory:1,093
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Product details
Overview
SI83414BCA-IFR from Skyworks Solutions is a quad-channel isolated smart switch configured as low-side, open-drain drivers with 1.5 kVRMS galvanic isolation, 0.7 A continuous current per channel, 155 mΩ RON, and integrated diagnostics including open-circuit detection and VDD2 undervoltage warning-designed for industrial PLC output modules driving solenoids and relays.
For engineers reviewing the SI83414BCA-IFR datasheet, SI83414BCA-IFR pinout, SI83414BCA-IFR application, or SI83414BCA-IFR equivalent, key selection criteria include its low-side switching topology, dedicated VDD2_WRN indicator pin, absence of SPI interface, support for 9–32 V switch supply, and compatibility with 2.25–5.5 V logic controllers in safety-critical I/O systems.
Technical Context
The SI83414BCA-IFR implements four independent low-side switches using RF-based CMOS isolation with >100 kV/µs CMTI, each featuring real-time current, voltage, and temperature sensing. Its fault protection includes overcurrent limiting, overtemperature shutdown, and undervoltage lockout on both VDD1 and VDD2 rails.
Unlike SPI-equipped variants, this part uses parallel control with asynchronous OE enable and exposes diagnostics via dedicated open-drain pins: VDD2_WRN (active-low), FLT (fault flag), and LED1–LED4 (per-channel status). It lacks MOSI/MISO/SCLK pins and does not support register-level diagnostics or inrush current mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Low-side, open-drain configuration-sinks load current to GND2, enabling direct connection to positive-supply loads like 24 V DC solenoids. |
| Isolation Rating | 1.5 kVRMS reinforced isolation-meets UL 1577 and IEC 61131-2 requirements for functional safety in industrial control environments. |
| Continuous Current | 0.7 A per channel at 25 °C-supports typical PLC output loads without external heatsinking under standard ambient conditions. |
| RON | 155 mΩ max-minimizes power dissipation (≤77 mW per channel at 0.7 A) and thermal stress during sustained operation. |
| Logic Supply Range | 2.25 V–5.5 V-interfacing directly with modern low-voltage MCUs (e.g., ARM Cortex-M0+) without level-shifting circuitry. |
| Switch Supply Range | 9 V–32 V-compatible with standard industrial 24 V DC power rails and tolerant of brownout and surge conditions. |
| Operating Temp | –40 °C to +125 °C-qualified for extended temperature operation in harsh factory-floor enclosures and uncooled control cabinets. |
Pinout & Package
SI83414BCA-IFR is housed in a compact 9 mm × 9 mm DFN-32 package with exposed thermal pad (EP) on underside for enhanced heat dissipation in high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Logic supply input | Powers digital interface side; must be 2.25–5.5 V; internal UVLO disables outputs if below threshold. |
| VDD2 | Switch supply input | Powers analog output side; 9–32 V range; powers all four low-side FETs and clamp circuitry. |
| GND1 / GND2 | Logic / switch ground | Galvanically isolated grounds-must be kept separate to maintain isolation integrity and avoid ground loops. |
| OE | Asynchronous output enable | Active-high; overrides all channel controls-driving OE low forces all B1–B4 outputs OFF immediately. |
| A1–A4 | Parallel input channels | Logic-level inputs controlling B1–B4 respectively; compatible with 2.25–5.5 V logic families. |
| B1–B4 | Low-side switch outputs | Open-drain N-channel outputs sinking up to 0.7 A each; require external pull-up to VDD2 for load connection. |
| VDD2_WRN | VDD2 undervoltage indicator | Active-low open-drain output signaling VDD2 < 9 V-used for system-level brownout detection and alarm generation. |
| FLT | Fault flag output | Active-low open-drain signal asserted when any fault (overtemp, overcurrent, open-load, communication error) is detected. |
| LED1–LED4 | Per-channel status indicators | Active-low open-drain outputs reflecting real-time ON/OFF state of B1–B4-enables direct LED feedback without MCU polling. |
| DNC / NC | No-connect terminals | Internally unused pins-must be left floating or tied to GND2 per layout guidelines to avoid noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Galvanic isolation barrier | RF-modulated CMOS isolation delivering >100 kV/µs CMTI-eliminates optocoupler aging and enables reliable long-term operation in EMI-heavy plants. |
| Multi-voltage output clamp | Intelligent clamp architecture handles unlimited demagnetization energy (EAS)-protects against inductive kickback while enabling fast turn-OFF for relay/solenoid lifetime extension. |
| Dedicated diagnostic pins | VDD2_WRN, FLT, and LED1–LED4 provide immediate hardware-level visibility into supply health, fault status, and channel activity-reducing firmware overhead and simplifying system validation. |
| Open-circuit detection | Monitors load continuity per channel and asserts FLT and corresponding LEDn-detects broken wires or disconnected solenoids before system failure occurs. |
| Thermal and overcurrent protection | On-die temperature sensor and current-limiting circuitry force graceful shutdown during overload-prevents catastrophic failure during short-circuit or jammed actuator events. |
Applications
| Programmable Logic Controller (PLC) Output Module | Industrial Data Acquisition System |
|---|---|
Use Scenario: Driving 24 V DC solenoid valves and indicator lamps in modular PLC backplanes with DIN-rail mounting. IC Role / Device Role / Timing Role: Low-side switch providing isolated, protected, and monitored output stage-replaces discrete optocoupler + MOSFET + protection IC combinations. Use Value: Reduces bill-of-materials count by 4× per channel while delivering built-in diagnostics (open-load, VDD2 warning) that eliminate need for external sense resistors or ADC monitoring. | Use Scenario: Conditioning and isolating digital output signals from sensor fusion units in predictive maintenance gateways. IC Role / Device Role / Timing Role: Isolated driver for control signals sent to field actuators-ensures signal integrity across noisy plant-floor ground domains. Use Value: 1.5 kVRMS isolation and >100 kV/µs CMTI prevent false triggering caused by motor drive transients, improving data reliability in IIoT edge nodes. |
| Motion Controller I/O Expansion | Smart Solid-State Relay Replacement |
Use Scenario: Adding isolated digital outputs to servo drive auxiliary I/O boards for emergency stop sequencing and axis enable/disable control. IC Role / Device Role / Timing Role: Fault-tolerant low-side switch with OE pin enabling synchronized global disable during safety state transitions. Use Value: Asynchronous OE allows deterministic, sub-microsecond shutdown of all four outputs-meeting SIL-2 functional safety timing requirements without software intervention. | Use Scenario: Replacing electromechanical relays in HVAC control panels where silent operation, long life, and zero contact bounce are required. IC Role / Device Role / Timing Role: Solid-state replacement with integrated clamp and diagnostics-handles inductive loads without external snubbers. Use Value: Eliminates mechanical wear and arcing; multi-voltage clamp ensures fast demagnetization (<10 µs), reducing coil heating and extending solenoid service life by >3× vs. relay alternatives. |
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-IFR | Lacks VDD2_WRN pin; no undervoltage warning indicator-only FLT and LED1–LED4 provided. | Suitable where only basic fault and channel status are needed; not appropriate for brownout-sensitive systems. | Select SI83414BBA-IFR only if VDD2 monitoring is handled externally or unnecessary in the target design. |
| SI83414ABA-IFR | Includes inrush current mode (8 A for 20 ms); supports lamp load pre-charge; adds open-channel indicator pin. | Required for incandescent lamp or high-inertia load driving where cold-filament surge must be managed. | Choose SI83414ABA-IFR when driving tungsten lamps or other high-inrush loads; SI83414BCA-IFR cannot deliver inrush current. |
Compared with SI83414BBA-IFR, SI83414BCA-IFR adds critical VDD2 brownout visibility without increasing pin count or complexity; versus SI83414ABA-IFR, it trades inrush capability for simpler control and lower cost in fixed-resistive or solenoid-only applications.
Availability
SI83414BCA-IFR is available at Aetrix Electronics and suitable for programmable logic controllers, industrial data acquisition systems, motion controllers, and smart solid-state relays requiring stable component supply and long-term industrial lifecycle support.
Supply support for SI83414BCA-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 infrastructure, automotive, and industrial markets.
The Si834x product line delivers isolated smart switches optimized for industrial control I/O-combining galvanic isolation, robust protection, and hardware-level diagnostics to replace legacy optocoupler-plus-driver designs.
FAQ
What is the switching topology of the SI83414BCA-IFR?
The SI83414BCA-IFR implements a low-side, open-drain switching topology-each of its four B1–B4 outputs sinks current from the load to GND2. This configuration requires external pull-up to VDD2 and is ideal for driving common-anode loads such as 24 V DC solenoids and indicator lamps in industrial PLC output stages.
Does the SI83414BCA-IFR support SPI communication?
No, the SI83414BCA-IFR does not support SPI communication. It belongs to the "Parallel-only" variant group (denoted by "C" in the ordering code), relying solely on A1–A4 inputs and OE for control, with diagnostics exposed via dedicated pins (VDD2_WRN, FLT, LED1–LED4) rather than register access.
What fault conditions trigger the FLT pin on the SI83414BCA-IFR?
The FLT pin on the SI83414BCA-IFR is asserted low for multiple fault conditions including overtemperature, overcurrent, VDD1 or VDD2 undervoltage, open-load detection on any channel, and communication errors. FLT remains active until all faults are cleared and the Clear Fault Delay (tCFD) expires-ensuring persistent fault visibility without MCU polling.
Can the SI83414BCA-IFR drive incandescent lamps?
No, the SI83414BCA-IFR does not support inrush current mode and is not rated for incandescent lamp driving. Its 0.7 A continuous rating and lack of 8 A/20 ms inrush capability make it unsuitable for cold-filament surge currents; use SI83414ABA-IFR instead for lamp applications.
What is the purpose of the VDD2_WRN pin on the SI83414BCA-IFR?
The VDD2_WRN pin on the SI83414BCA-IFR is an active-low, open-drain indicator that signals when the switch supply voltage (VDD2) falls below 9 V-providing early brownout warning before full undervoltage lockout occurs. This enables system-level alarms or graceful shutdown sequencing prior to loss of output functionality.
SI83414BCA-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:
- 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)
SI83414BCA-IFR FAQ
1.How can I place an order for SI83414BCA-IFR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83414BCA-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 SI83414BCA-IFR reliable?
The price and inventory of SI83414BCA-IFR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83414BCA-IFR is usually 5 days.
3.What payment methods are accepted for SI83414BCA-IFR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83414BCA-IFR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83414BCA-IFR?
SI83414BCA-IFR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83414BCA-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 SI83414BCA-IFR?
For technical support, including SI83414BCA-IFR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83414BCA-IFR requirements.
6.How does Aetrix verify that SI83414BCA-IFR is sourced from the original manufacturer or authorized distributors?
All SI83414BCA-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 SI83414BCA-IFR meets industry standards.
7.What is the process for return or replacement of SI83414BCA-IFR?
All SI83414BCA-IFR units undergo pre-shipment inspection (PSI). If there is an issue with SI83414BCA-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 SI83414BCA-IFR part is unused and in its original packaging.
Return procedure for SI83414BCA-IFR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83414BCA-IFR 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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