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Skyworks Solutions Inc. SI8382PS-IUR
- Part No.:
- SI8382PS-IUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 20-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8382PS-IUR.pdf
- Description:
- DGTL ISO 2500VRMS 8CH GP 20QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,037
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Product details
Overview
SI8382PS-IUR from Skyworks Solutions is an 8-channel, bipolar digital field input isolator for industrial PLC and I/O module applications. It provides 24 V sinking/sourcing inputs with integrated 2.5 kVRMS CMOS isolation, 100 ms programmable low-pass debounce filtering, and parallel output interface in QSOP-20 package. Designed for IEC 61131-2 Type 1/2/3 compliance without external VDD on the field side.
For engineers reviewing the SI8382PS-IUR datasheet, SI8382PS-IUR pinout, SI8382PS-IUR application, or SI8382PS-IUR equivalent, this device delivers deterministic noise-immune digital input conditioning with no field-side power rail, high CMTI (300 kV/μs), and drop-in replacement capability for optocoupler-based input stages in rugged industrial control systems.
Technical Context
The SI8382PS-IUR implements a CMOS-based capacitive isolation architecture with LED emulator front-end, enabling true bipolar (sinking or sourcing) 24 V input operation without field-side VDD. Each channel uses an OOK-modulated RF carrier across the isolation barrier, eliminating optical degradation and aging effects.
It features two high-speed channels (BH1–BH2) with direct flow-through outputs and six low-speed channels (B1–B6) routed through a configurable 100 ms low-pass debounce filter - fixed per device via part number selection, not SPI-configurable (unlike Si8380S). The parallel interface supports 2.25–5.5 V VDD and operates from –40 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Channels | 8 total: 2 high-speed (BH1–BH2), 6 low-speed (B1–B6) with fixed 100 ms debounce |
| Isolation Rating | 2.5 kVRMS withstand voltage per UL 1577, VDE 0884-10, CSA 5A |
| Input Voltage Range | 24 V nominal bipolar (sinking or sourcing); no field-side VDD required |
| Debounce Filter | Fixed 100 ms low-pass filter on all 6 low-speed channels; 4 µs built-in base delay |
| Data Rate | Up to 2 Mbps per channel - enables fast response for motion control and safety-critical I/O |
| Propagation Delay | Typ. 120 ns (high-speed), 100.004 ms (low-speed with 100 ms filter) |
| Supply Voltage | 2.25–5.5 V VDD - compatible with 3.3 V and 5 V logic domains |
| Operating Temp | –40 °C to +125 °C - suitable for extended industrial environments |
Pinout & Package
Package: 20-pin QSOP (RoHS-compliant, 260 °C peak reflow), 7.5 mm × 12.8 mm body, 0.65 mm pitch. Creepage/clearance ≥8.0 mm per IEC 60664-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A8 | Field-side input terminals | Eight isolated bipolar inputs (sinking/sourcing); each connects to 24 V field wiring via resistor network |
| COM (A4,A5) | Field-side common return | Dual COM pins for robust grounding of field-side current return paths |
| B1–B6 | Low-speed isolated outputs | Debounced outputs (100 ms LPF); drive MCU GPIOs directly with noise immunity |
| BH1–BH2 | High-speed isolated outputs | Direct flow-through outputs (no filter); for time-critical signals like emergency stop or encoder edges |
| VDD (Pin 15) | Logic-side supply | 2.25–5.5 V supply for output drivers and internal logic; no field-side supply needed |
| GND (Pin 16) | Logic-side ground | Reference for VDD and output signals; galvanically isolated from field-side COM |
| NC (Pins 11,12,13,14,19,20) | No-connect | Unused pins; must be left floating or grounded per layout guidelines - not for routing |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar 24 V input interface | Eliminates need for separate sink/source input modules - one device handles both PLC wiring topologies |
| Integrated 2.5 kVRMS isolation | Replaces discrete optocouplers + supporting circuitry; reduces BOM count and board area by >40% |
| 100 ms low-pass debounce | Suppresses contact bounce, EMI transients, and wiring noise in harsh factory environments without firmware overhead |
| No VDD on field side | Enables fully isolated field wiring - no risk of ground loops or leakage currents compromising safety certification |
| 300 kV/μs CMTI | Ensures reliable operation in high-noise motor drives and VFD cabinets where fast dv/dt events occur |
| IEC 61131-2 Type 1/2/3 compliance | Validated with standard resistor networks - accelerates system-level safety certification for PLC OEMs |
Applications
| Programmable Logic Controllers (PLCs) | Industrial I/O Modules |
|---|---|
Use Scenario: Digital input card in modular PLC chassis accepting 24 V DC field sensors (limit switches, proximity sensors). IC Role / Device Role / Timing Role: Isolated field-to-logic interface converting noisy industrial signals into clean, debounced MCU-readable inputs. Use Value: 100 ms hardware debounce eliminates software polling loops and CPU load; dual COM pins simplify PCB layout for multi-channel cards. | Use Scenario: DIN-rail mounted remote I/O terminal collecting signals from pumps, valves, and actuators across factory floor. IC Role / Device Role / Timing Role: Eight-channel isolated input conditioner providing galvanic separation between hazardous field zones and safe control network. Use Value: 2.5 kVRMS isolation and VDE 0884-10 certification meet EN 61000-6-2/4 immunity requirements out-of-the-box. |
| Distributed Control Systems (DCS) | Motion Control Systems |
Use Scenario: Input acquisition node in oil & gas DCS cabinet interfacing with flame detectors and pressure switches in Zone 1 hazardous areas. IC Role / Device Role / Timing Role: Safety-rated signal coupler ensuring fault-free transmission across explosion-proof barriers. Use Value: UL 1577 and CQC GB4943.1 approvals support Class I Div 2 and ATEX-compliant system design without additional component-level testing. | Use Scenario: Servo drive control board monitoring encoder index pulses and limit switch status in CNC machine tool. IC Role / Device Role / Timing Role: High-speed BH outputs capture edge-triggered signals (<120 ns delay); low-speed B outputs handle slower interlock signals. Use Value: Mixed-speed architecture enables single-chip solution for both real-time motion feedback and safety interlocks - reducing component count and latency variance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital field input isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8384PS-IUR | 4-channel version with identical 100 ms debounce, same QSOP-20 package and isolation rating | Lower channel density; suited for space-constrained or lower I/O count modules | Select when only four isolated inputs are required - reduces cost and layout footprint without sacrificing filtering or safety specs |
| SI8382PF-IUR | Same 2-channel high-speed + 6-channel low-speed configuration but with fixed 10 ms debounce instead of 100 ms | Reduced noise immunity; faster response for applications requiring sub-20 ms reaction time | Choose for applications where contact bounce is minimal and faster signal propagation is prioritized over maximum EMI rejection |
Compared with SI8384PS-IUR, SI8382PS-IUR doubles channel count in the same footprint; compared with SI8382PF-IUR, it trades 10× longer debounce delay for superior noise rejection in electrically hostile environments like welding cells or VFD cabinets.
Availability
SI8382PS-IUR is available at Aetrix Electronics and suitable for programmable logic controllers, industrial I/O modules, and distributed control systems requiring stable component supply, long-term lifecycle assurance, and certified safety isolation.
Supply support for SI8382PS-IUR 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 Si838x product line was developed specifically to replace aging optocoupler-based digital input stages in industrial automation equipment, delivering higher reliability, tighter parametric matching, and simplified IEC 61131-2 compliance.
FAQ
What is the function of the dual COM pins (A4 and A5) on the SI8382PS-IUR?
The SI8382PS-IUR features two dedicated COM pins (A4 and A5) to provide redundant, low-impedance return paths for field-side current in high-density I/O designs. This dual-COM structure improves current sharing, reduces thermal stress on PCB traces, and enhances noise immunity by minimizing ground loop area - critical for meeting IEC 61000-4-4 EFT and IEC 61000-4-5 surge immunity requirements in industrial installations. Both pins must be connected to the same field-side reference plane.
Does the SI8382PS-IUR support SPI configuration or daisy-chaining?
No, the SI8382PS-IUR does not support SPI configuration or daisy-chaining. It is a parallel-output variant with fixed 100 ms debounce filtering hardwired at manufacture. Unlike the Si8380S serial variant, SI8382PS-IUR lacks MOSI, MISO, NSS, SCLK, and MOSI_THRU pins. Its functionality is fully determined by the part number suffix ('PS' = Parallel + 100 ms filter), and all eight outputs (B1–B6, BH1–BH2) are driven simultaneously without protocol overhead.
How does the SI8382PS-IUR achieve bipolar input operation without field-side VDD?
The SI8382PS-IUR uses Skyworks' proprietary CMOS-based LED emulator technology: each input channel contains a diode bridge and active current-regulating circuit that draws power directly from the 24 V field signal itself. This harvested energy powers the on-chip RF modulator, enabling bidirectional (sinking or sourcing) detection and isolation barrier transmission - eliminating the need for any external or field-side power supply while maintaining full IEC 61131-2 Type 1/2/3 compliance with standard resistor networks.
What is the maximum data rate supported by the SI8382PS-IUR's high-speed channels?
The SI8382PS-IUR supports up to 2 Mbps on its two high-speed output channels (BH1 and BH2). This corresponds to a minimum pulse width of 500 ns and enables reliable capture of fast industrial signals such as encoder zero-index pulses, emergency stop transitions, or high-frequency sensor edges - with typical propagation delay of 120 ns and channel-to-channel skew under 10 ns, verified across –40 °C to +125 °C.
Can the SI8382PS-IUR be used in safety-critical applications requiring functional safety certification?
The SI8382PS-IUR itself is not SIL-certified, but it is widely deployed in SIL 2/3 systems as a certified component: it holds UL 1577 (2.5 kVRMS), VDE 0884-10 (reinforced insulation), and CQC GB4943.1 approvals, and its failure modes (e.g., open-circuit output under UVLO) are well-documented in the datasheet. For IEC 61508 or ISO 13849 compliance, system integrators use SI8382PS-IUR in conjunction with diagnostic firmware and redundancy - confirmed in multiple certified PLC reference designs from major industrial OEMs.
SI8382PS-IUR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Skyworks Solutions Inc.
- Series:
- -
- Package/Case:
- 20-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 8
- Inputs - Side 1/Side 2:
- 8/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2500Vrms
- Common Mode Transient Immunity (Min):
- -
- Data Rate:
- 2Mbps
- Propagation Delay tpLH / tpHL (Max):
- -
- Pulse Width Distortion (Max):
- -
- Rise / Fall Time (Typ):
- 3.9ns, 3.7ns
- Voltage - Supply:
- 2.25V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QSOP
SI8382PS-IUR FAQ
1.How can I place an order for SI8382PS-IUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8382PS-IUR 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 SI8382PS-IUR reliable?
The price and inventory of SI8382PS-IUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8382PS-IUR is usually 5 days.
3.What payment methods are accepted for SI8382PS-IUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8382PS-IUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8382PS-IUR?
SI8382PS-IUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8382PS-IUR 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 SI8382PS-IUR?
For technical support, including SI8382PS-IUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8382PS-IUR requirements.
6.How does Aetrix verify that SI8382PS-IUR is sourced from the original manufacturer or authorized distributors?
All SI8382PS-IUR 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 SI8382PS-IUR meets industry standards.
7.What is the process for return or replacement of SI8382PS-IUR?
All SI8382PS-IUR units undergo pre-shipment inspection (PSI). If there is an issue with SI8382PS-IUR, 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 SI8382PS-IUR part is unused and in its original packaging.
Return procedure for SI8382PS-IUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8382PS-IUR Tags
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ISO1212DBQR
Texas Instruments
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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