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Skyworks Solutions Inc. SI8380PM-IUR
- Part No.:
- SI8380PM-IUR
- Manufacturer:
- Skyworks Solutions Inc.
- Category:
- Digital Isolators
- Package:
- 20-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
SI8380PM-IUR.pdf
- Description:
- DGTL ISO 2500VRMS 8CH GP 20QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,188
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Product details
Overview
SI8380PM-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 isolation, 30 ms low-pass debounce filtering, and 2.25–5.5 V output-side supply operation - enabling direct interface to microcontrollers without external level-shifting. Used in programmable logic controllers and distributed control systems requiring robust noise immunity.
For engineers reviewing the SI8380PM-IUR datasheet, SI8380PM-IUR pinout, SI8380PM-IUR application, or SI8380PM-IUR equivalent, key selection criteria include its fixed 30 ms debounce delay, QSOP-20 package, IEC 61131-2 Type 1/2/3 compliance, 300 kV/μs CMTI, and absence of field-side VDD requirement - all critical for reliable 24 V industrial signal acquisition.
Technical Context
The SI8380PM-IUR implements Skyworks' CMOS-based capacitive isolation with an LED emulator front end, eliminating the need for field-side power while supporting both sourcing and sinking 24 V inputs via internal diode bridge topology. Its eight parallel outputs are flow-through (non-inverting) with no SPI interface - unlike the Si8380S variant - and all channels share a fixed 30 ms low-pass debounce filter.
This device operates across –40 °C to +125 °C and complies with UL 1577, VDE 0884-10, and IEC 62368-1 safety standards. Propagation delay is 1.2 μs (typ) per channel, with channel-to-channel skew <100 ns, enabled by monolithic isolation barrier design and absence of optocoupler aging effects.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.5 kVRMS withstand voltage - meets reinforced insulation requirements for 250 VAC working voltage in industrial environments. |
| Input Configuration | Bipolar 24 V sinking/sourcing - accepts standard PLC field wiring without polarity constraints or external biasing. |
| Debounce Filter | Fixed 30 ms low-pass filter - suppresses contact bounce and EMI transients in electromechanical sensor interfaces. |
| Propagation Delay | 1.2 μs (typ) - enables real-time monitoring of fast-acting industrial inputs such as emergency stops or limit switches. |
| CMTI | 300 kV/μs - prevents false triggering during high dv/dt noise events common in motor drives and VFDs. |
| Supply Range | 2.25–5.5 V VDD - interoperates directly with 3.3 V or 5 V MCU I/O without level shifters. |
| Operating Temp | –40 °C to +125 °C - supports deployment in uncontrolled cabinet environments and near heat-generating equipment. |
Pinout & Package
SI8380PM-IUR uses a RoHS-compliant 20-pin QSOP package (5.3 mm × 10.2 mm, 0.65 mm pitch) with creepage/clearance ≥5.5 mm across the internal isolation barrier. Pin numbering follows JEDEC MS-013, with pins 1–10 on top row (left to right), pins 11–20 on bottom row (right to left).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1–A8 | Field-side input channels | Accept 24 V sinking/sourcing signals; each connects to internal LED emulator and diode bridge - no field-side VDD required. |
| COM | Field-side common reference | Return path for all eight input channels; must be tied to field ground or shared 24 V return. |
| B1–B8 | Logic-side output channels | CMOS-compatible active-high outputs (flow-through); drive MCU GPIOs directly at 2.25–5.5 V levels. |
| VDD | Logic-side supply | Power for isolation barrier receiver and output drivers; bypass with 0.1 µF capacitor close to pin. |
| GND | Logic-side ground | Reference for VDD and all Bx outputs; separate from field-side COM to maintain isolation integrity. |
Key Features
| Feature | Design Value |
|---|---|
| Bipolar 24 V interface | Eliminates field-wiring polarity dependency and removes need for external pull-up/pull-down resistors on input side. |
| Integrated 2.5 kVRMS isolation | Replaces discrete optocouplers and external isolation components - reduces BOM count and PCB area by >50%. |
| 30 ms fixed debounce filter | Hardware-enforced noise suppression for mechanical switch inputs - avoids firmware-based debouncing latency and CPU overhead. |
| No VDD on field side | Enables true galvanic isolation with zero power consumption on the hazardous side - simplifies enclosure-level safety certification. |
| High CMTI (300 kV/μs) | Ensures stable operation in electrically noisy industrial settings, including proximity to variable frequency drives and solenoid actuators. |
Applications
| Programmable Logic Controllers (PLCs) | Industrial Data Acquisition |
|---|---|
Use Scenario: Monitoring 24 V discrete inputs from pushbuttons, selector switches, and emergency stop circuits in modular PLC backplanes. IC Role / Device Role / Timing Role: Isolated digital input conditioner converting field signals to clean, debounced logic-level outputs for PLC CPU scanning. Use Value: 30 ms hardware debounce ensures reliable detection of slow mechanical contacts without firmware intervention or timing jitter. | Use Scenario: Capturing status signals from sensors and actuators in factory-floor data loggers with mixed-signal front ends. IC Role / Device Role / Timing Role: High-CMTI isolated interface protecting ADC/microcontroller domains from ground-loop-induced noise and transient coupling. Use Value: 300 kV/μs CMTI rating prevents misreads during ESD events or switching noise from nearby 480 VAC machinery. |
| Distributed Control Systems (DCS) | Motion Control Systems |
Use Scenario: Remote I/O modules receiving feedback from limit switches, proximity sensors, and valve position indicators across long cable runs. IC Role / Device Role / Timing Role: Eight-channel field-to-controller signal translator with integrated safety isolation and standardized IEC 61131-2 Type 2 compliance. Use Value: Fixed 30 ms debounce matches typical DCS scan cycle requirements while maintaining deterministic response time across all channels. | Use Scenario: Interfacing encoder index pulses and servo enable/disabled signals in CNC machine tool cabinets with high EMI density. IC Role / Device Role / Timing Role: Robust input isolator preserving signal edge integrity between noisy motor power stages and motion controller logic. Use Value: 1.2 μs propagation delay and <100 ns channel skew ensure synchronized capture of multi-axis homing signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital field input isolation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8380PF-IUR | 10 ms debounce filter instead of 30 ms; identical pinout, isolation, and supply specs. | Better suited for faster-switching inputs (e.g., photoelectric sensors) where shorter response time is prioritized over mechanical contact noise rejection. | Select SI8380PF-IUR when system-level timing budget requires sub-15 ms input-to-output latency. |
| SI8380PS-IUR | 100 ms debounce filter instead of 30 ms; same package and electrical interface. | Optimized for highly noisy environments with severe contact bounce (e.g., large contactors, relay panels) where maximum noise margin is required. | Choose SI8380PS-IUR only if field validation confirms persistent false triggers with 30 ms filtering. |
Compared with SI8380PM-IUR, SI8380PF-IUR reduces input response latency by ~67% but sacrifices noise immunity for mechanical contacts, while SI8380PS-IUR increases noise rejection by >3× at the cost of slower state updates - making SI8380PM-IUR the balanced choice for general-purpose industrial I/O where 30 ms aligns with typical PLC scan cycles and switch settling behavior.
Availability
SI8380PM-IUR is available at Aetrix Electronics and suitable for programmable logic controllers, distributed control systems, and industrial I/O modules requiring stable component supply, long-term lifecycle support, and certified safety isolation.
Supply support for SI8380PM-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 for communications, industrial, and automotive markets.
The Si838x family was designed specifically to replace aging optocoupler-based digital input stages in industrial automation equipment - delivering higher reliability, longer service life, and simplified IEC 61131-2 compliance.
FAQ
What is the debounce filter delay of the SI8380PM-IUR?
The SI8380PM-IUR features a fixed 30 ms low-pass debounce filter on all eight input channels. This value is hardwired into the device and cannot be adjusted via software or external components. It is selected at manufacture based on the "PM" suffix in the part number and is intended for reliable rejection of mechanical switch bounce and moderate EMI in industrial control applications. The SI8380PM-IUR does not support SPI configuration like the Si8380S variant.
Does the SI8380PM-IUR require a power supply on the field side?
No, the SI8380PM-IUR does not require any power supply on the field side. Its bipolar LED emulator input architecture draws operating current directly from the 24 V field signal through internal circuitry, eliminating the need for VDD or auxiliary biasing on the isolated input side. This simplifies field wiring, reduces component count, and supports intrinsic safety considerations in hazardous-area designs.
What safety certifications apply to the SI8380PM-IUR?
The SI8380PM-IUR carries UL 1577 recognition (2500 VRMS, 1 minute), CSA Component Acceptance Notice 5A, VDE 0884-10 certification, and compliance with IEC 62368-1 and GB4943.1. These approvals validate its reinforced insulation barrier for use in industrial equipment up to 250 VAC working voltage and confirm suitability for systems requiring adherence to IEC 61131-2 Type 1, 2, and 3 digital input specifications.
Can the SI8380PM-IUR be used with 5 V microcontrollers?
Yes, the SI8380PM-IUR supports logic-side supply voltages from 2.25 V to 5.5 V, making it fully compatible with both 3.3 V and 5 V microcontrollers. Its B1–B8 outputs are CMOS-compatible, with rail-to-rail swing and 50 Ω nominal output impedance. No level-shifting circuitry is needed when interfacing with standard MCU GPIOs, provided VDD is set to the target logic voltage and properly bypassed with a 0.1 µF capacitor.
How does the SI8380PM-IUR differ from the SI8380S-IUR?
The SI8380PM-IUR uses a parallel output interface with fixed 30 ms debounce and no SPI capability, whereas the SI8380S-IUR provides a serial SPI interface with per-channel configurable debounce modes and delays (including 30 ms). The SI8380PM-IUR has simpler integration for static I/O requirements, while the SI8380S-IUR enables dynamic reconfiguration and daisy-chaining of up to 16 devices. Pinouts and packages differ: SI8380PM-IUR uses QSOP-20 with dedicated A/B pins, while SI8380S-IUR adds MOSI, MISO, NSS, SCLK, and MOSI_THRU pins.
SI8380PM-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):
- 200kV/µs
- Data Rate:
- 250kbps
- 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
SI8380PM-IUR FAQ
1.How can I place an order for SI8380PM-IUR through Aetrix?
Please submit a Request for Quotation (RFQ) for SI8380PM-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 SI8380PM-IUR reliable?
The price and inventory of SI8380PM-IUR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI8380PM-IUR is usually 5 days.
3.What payment methods are accepted for SI8380PM-IUR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI8380PM-IUR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SI8380PM-IUR?
SI8380PM-IUR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SI8380PM-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 SI8380PM-IUR?
For technical support, including SI8380PM-IUR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI8380PM-IUR requirements.
6.How does Aetrix verify that SI8380PM-IUR is sourced from the original manufacturer or authorized distributors?
All SI8380PM-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 SI8380PM-IUR meets industry standards.
7.What is the process for return or replacement of SI8380PM-IUR?
All SI8380PM-IUR units undergo pre-shipment inspection (PSI). If there is an issue with SI8380PM-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 SI8380PM-IUR part is unused and in its original packaging.
Return procedure for SI8380PM-IUR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SI8380PM-IUR 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.
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ISO7720FDR
Texas Instruments
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ISO7721DR
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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