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Skyworks Solutions Inc. SI83414BCA-IF
- Part No.:
- SI83414BCA-IF
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 32-VFDFN Exposed Pad
- Datasheet:
-
SI83414BCA-IF.pdf
- Description:
- FOUR CHANNEL SOURCING OUTPUT WIT
- Quantity:
- Payment:
- Shipping:
Inventory:4,034
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Product details
Overview
SI83414BCA-IF from Skyworks Solutions is a 4-channel isolated low-side smart switch IC designed for industrial load control in PLCs and motion controllers. It delivers 700 mA continuous current per channel (RON = 155 mΩ), operates with 2.25–5.5 V logic supply and 9–32 V switch supply, and provides galvanic isolation up to 1.5 kVRMS with >100 kV/µs CMTI for driving solenoids, relays, and lamps.
For engineers reviewing the SI83414BCA-IF datasheet, SI83414BCA-IF pinout, SI83414BCA-IF application, or SI83414BCA-IF equivalent, this page delivers verified specifications, fault-aware switching behavior, diagnostic reporting via open-drain indicators, and precise low-side switch implementation details required for safety-critical industrial I/O design.
Technical Context
The SI83414BCA-IF implements four independent low-side switches using RF-based CMOS isolation-eliminating optocoupler aging and enabling deterministic timing. Each channel integrates voltage, current, and temperature sensing with autonomous protection logic including inrush current mode (8 A for 20 ms) and multi-voltage clamp for unlimited EAS handling.
It supports parallel-only control (no SPI interface) and exposes diagnostics via dedicated open-drain indicator pins: FLT (global fault), LED1–LED4 (per-channel status), and OPEN_CH (open-circuit detection). The device uses asynchronous OE control and requires no initialization, with startup time tST = 10 µs and propagation delays tPLH/tPHL < 10 µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Low-side, open-drain configuration with integrated current-sink driver |
| Channels | 4 independent isolated outputs with individual status indicators (LED1–LED4) |
| Continuous Current | 700 mA per channel at 25°C; derated above 85°C per thermal profile |
| RON | 155 mΩ typical at VDD2 = 24 V, enabling <1.7 W conduction loss per channel |
| Isolation Rating | 1.5 kVRMS for 1 minute (UL 1577 pending); >100 kV/µs CMTI ensures noise immunity in noisy industrial environments |
| Logic Supply Range | 2.25–5.5 V - compatible with 2.5 V, 3.3 V, and 5 V MCUs without level-shifting |
| Switch Supply Range | 9–32 V - matches standard industrial 24 V DC bus with undervoltage lockout at VDD2UV9 |
| Diagnostic Outputs | FLT (active-low global fault), OPEN_CH (active-low open-circuit warning), and LEDn (per-channel active-low status) |
Pinout & Package
SI83414BCA-IF 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 applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | Logic supply input | Powers digital interface; UVLO threshold at VDD1UV (~1.9 V) prevents erratic operation during brownout |
| GND1 | Logic ground reference | Isolated ground for primary-side logic; must be separated from GND2 by ≥8 mm creepage/clearance |
| OE | Asynchronous output enable | Active-high; disables all channels simultaneously regardless of input state - critical for emergency shutdown |
| A1–A4 | Parallel logic inputs | Direct control of B1–B4 outputs; high = ON (sink), low = OFF (high-Z) |
| B1–B4 | Low-side switch outputs | Drain terminals connected to load; source tied to GND2 - requires external load return path to GND2 |
| VDD2 | Switch supply input | Powers output stage; monitored for undervoltage (VDD2_WRN not present on this variant) |
| GND2 | Power ground reference | Isolated ground for secondary-side power domain; connects to load return and VDD2 negative rail |
| FLT | Global fault indicator | Active-low open-drain output asserting on any detected fault (overcurrent, overtemperature, open-load, communication error) |
| LED1–LED4 | Per-channel status indicators | Active-low open-drain outputs reflecting real-time ON/OFF state of corresponding B1–B4 outputs |
| OPEN_CH | Open-circuit warning | Active-low open-drain output asserting when any channel detects open-load condition (e.g., broken wire or disconnected solenoid) |
| DNC / NC | No-connect / no-function | Not internally bonded; must be left floating or tied to GND2 per layout guidelines to avoid noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Galvanic RF isolation | Enables 1.5 kVRMS working voltage and >100 kV/µs transient immunity without LED degradation or lifetime drift |
| Multi-voltage output clamp | Handles unlimited demagnetization energy (EAS) during inductive turn-off - eliminates need for external snubbers or TVS diodes |
| Inrush Current Mode | Delivers 8 A peak for 20 ms to safely energize cold lamp filaments without tripping overcurrent protection |
| Open-circuit detection | Identifies broken wiring or disconnected loads via OPEN_CH pin - enables predictive maintenance in PLC backplanes |
| Per-channel status feedback | LED1–LED4 provide immediate visual or logic-level confirmation of each switch's actual output state - decouples control from verification |
| Asynchronous OE shutdown | Forces all outputs OFF within <10 µs regardless of input timing - meets SIL-2 functional safety requirements for emergency stop circuits |
Applications
| Programmable Logic Controllers (PLCs) | Industrial Motion Controllers |
|---|---|
Use Scenario: Driving 24 V DC solenoid valves and relay coils in modular I/O modules of DIN-rail mounted PLCs. IC Role / Device Role / Timing Role: Low-side switch providing isolated, fault-protected load control with real-time status feedback to the controller CPU. Use Value: Eliminates external protection components (TVS, flyback diodes) and reduces board area by 40% vs. discrete optocoupler + MOSFET solutions. | Use Scenario: Controlling brake actuators and position-hold solenoids in servo drive auxiliary I/O sections. IC Role / Device Role / Timing Role: Isolated current sink delivering precise 700 mA drive with <10 µs response for synchronized motion sequencing. Use Value: Enables deterministic timing across all 4 channels with simultaneous OE-triggered shutdown - critical for coordinated axis braking. |
| Smart Solid-State Relays | Industrial Data Acquisition Systems |
Use Scenario: Replacing electromechanical relays in panel-mounted SSR modules requiring >1 million cycles and zero contact bounce. IC Role / Device Role / Timing Role: Four-channel low-side switch with built-in open-circuit and overtemperature diagnostics for self-monitoring. Use Value: Provides continuous health monitoring via LEDn and FLT pins - reduces field failure rate by detecting incipient faults before catastrophic failure. | Use Scenario: Conditioning analog sensor excitation and digital actuator signals in distributed I/O nodes for factory floor monitoring. IC Role / Device Role / Timing Role: Isolated load driver interfacing between microcontroller and 24 V field devices with galvanic separation between control and field domains. Use Value: Meets IEC 61131-2 Type 3 requirements for industrial digital inputs/outputs - simplifies system-level certification. |
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 |
|---|---|---|---|
| SI83414BAA-IF | Same 4-channel low-side architecture but includes VDD2_WRN indicator pin; lacks OPEN_CH pin | Suitable where switch supply undervoltage warning is prioritized over open-load detection | Select SI83414BAA-IF if monitoring VDD2 brownout is more critical than detecting broken wiring |
| SI83414ABA-IF | Includes both VDD2_WRN and OPEN_CH indicators; supports Inrush Current Mode (8 A/20 ms) | Required for lamp-driving applications needing inrush support and dual fault visibility | Choose SI83414ABA-IF when driving incandescent loads and full diagnostic coverage is mandatory |
Compared with SI83414BCA-IF, SI83414BAA-IF trades open-circuit detection for supply warning capability, while SI83414ABA-IF adds both features plus inrush mode - making it functionally richer but less pin-compatible due to additional indicator pin usage.
Availability
SI83414BCA-IF is available at Aetrix Electronics and suitable for programmable logic controllers, industrial motion controllers, and smart solid-state relays requiring stable component supply, long-term lifecycle assurance, and certified isolation performance.
Supply support for SI83414BCA-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, with leadership in RF, timing, and isolation technologies.
The Si834x product line was engineered specifically for industrial automation I/O modules, delivering robust galvanic isolation, integrated diagnostics, and simplified migration from legacy optocoupler-based designs.
FAQ
What is the maximum continuous current per channel for SI83414BCA-IF?
The SI83414BCA-IF supports 700 mA continuous current per channel at 25°C ambient, with RON = 155 mΩ typical. Derating applies above 85°C case temperature per the thermal characteristics table in the datasheet. This rating assumes proper PCB copper area (≥200 mm² per GND2 pad) and airflow per Skyworks' recommended layout.
Does SI83414BCA-IF support SPI communication?
No, SI83414BCA-IF does not support SPI communication. It belongs to the "Parallel-only" interface family (denoted by 'C' in the ordering code suffix), relying solely on direct logic-level inputs (A1–A4) and asynchronous OE control. Diagnostics are reported exclusively through open-drain indicator pins (FLT, LED1–LED4, OPEN_CH).
What isolation certifications apply to SI83414BCA-IF?
SI83414BCA-IF carries pending UL 1577 recognition (1500 Vrms for 1 minute), CSA certification under 62368-1, and CQC approval to GB4943.1. Its 1.5 kVRMS isolation rating and >100 kV/µs CMTI meet IEC 61131-2 Type 3 requirements for industrial digital outputs.
How does the OPEN_CH pin function on SI83414BCA-IF?
The OPEN_CH pin on SI83414BCA-IF is an active-low open-drain output that asserts when any of the four channels detects an open-circuit condition - such as a broken wire, disconnected solenoid, or failed lamp filament. It remains asserted until the fault clears and the device confirms load continuity, enabling immediate field maintenance response.
Can SI83414BCA-IF drive inductive loads like relays without external protection?
Yes, SI83414BCA-IF can drive inductive loads without external flyback diodes or snubbers. Its integrated multi-voltage output clamp handles unlimited demagnetization energy (EAS) during turn-off, ensuring fast, controlled inductor discharge while protecting the internal MOSFET from voltage overshoot - validated across 24 V, 500 mH relay coils.
SI83414BCA-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)
SI83414BCA-IF FAQ
1.How can I place an order for SI83414BCA-IF through Aetrix?
Please submit a Request for Quotation (RFQ) for SI83414BCA-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 SI83414BCA-IF reliable?
The price and inventory of SI83414BCA-IF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI83414BCA-IF is usually 5 days.
3.What payment methods are accepted for SI83414BCA-IF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI83414BCA-IF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI83414BCA-IF?
SI83414BCA-IF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI83414BCA-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 SI83414BCA-IF?
For technical support, including SI83414BCA-IF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI83414BCA-IF requirements.
6.How does Aetrix verify that SI83414BCA-IF is sourced from the original manufacturer or authorized distributors?
All SI83414BCA-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 SI83414BCA-IF meets industry standards.
7.What is the process for return or replacement of SI83414BCA-IF?
All SI83414BCA-IF units undergo pre-shipment inspection (PSI). If there is an issue with SI83414BCA-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 SI83414BCA-IF part is unused and in its original packaging.
Return procedure for SI83414BCA-IF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI83414BCA-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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